DEMCO AND B UTTERFLY W-K-M V ALVES

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2 T A B L E O F C O N T E N T S AND B UTTERFLY W-K-M V ALVES Features & Benefits W-K-M DynaCentric High Performance Butterfly Valves 1 Butterfly Valves 3 Butterfly Valves: Styles And Accessories 5 Product Specifications: W-K-M DynaCentric High Performance Butterfly Valves How to Order 7 Trim Details 9 Pressure Temperature Ratings 12 Torque Values 15 Dimensional Data 17 Product Specifications: Butterfly Valves Parts Detail and Trim 21 How to Order Valves 22 Base Numbers and Weights 24 Dimensional Data 25 How to Order Handles 28 Worm Gear Operators 29 DR Piston Actuators 31 Electric Actuatyors 35 Diaphragm Actuators 36 Stem Extensions, Tees and Adapters 37 General Technical Information 38 Standard Material Data 43 Terms and Conditions 45 Trademark Information 47

3 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V A L V E S W-K-M The high performance butterfly valve that brings low cost and light weight to high pressure water, oil, steam, gas and slurry applications. W-K-M DynaCentric butterfly valves satisfy a wide range of industrial applications. Available in carbon steel or stainless steel as well as lug and wafer body styles, they may be specified in sizes from 3" to 24" and pressure classes up to 600, 3" to 12", and up to class 300, 14" to 24". Engineered for heavy duty, maintenance-free performance in a variety of uses, the W-K-M DynaCentric High Performance butterfly valve is most commonly selected for the following applications: Chemical and petrochemical processing Utilities Pulp and paper Oil and gas production Fuel handling systems Air conditioning and refrigeration Marine The DynaCentric butterfly valve offers the high performance of ball and gate valves with the low-cost, light-weight benefits of a butterfly valve design. It is ideal for handling water, oil, steam, gas and slurries. Features/Benefits Two body styles Flangeless wafer and threaded lug styles are available. Heavy duty eccentric disc Its wide sealing area is designed to reduce seat wear. Thrust bearing/disc spacer A corrosion resistant, single component thrust bearing/disc spacer reduces body wear and assures positive centering of disc in the valve bore. Internal stop Prevents disc overtravel and seat damage. Positively retained stem ruggedly constructed from 17-4 PH condition H1150 Double aged. Close tolerance flange alignment holes in body help center valve in piping and prevent wrong valve from being installed. Combination thrust bearing/disc spacer reduces body wear, and positively centers disc in valve bore. Capscrews are outboard of lading to prevent corrosion, and are positioned compatible with all flange gaskets including API 601 spiral wound types. Lug body seat retainers are designed to minimize deflection, providing fullpressure, end- of-line capabilities. Internal stop prevents overtravel and seat damage. Heavy duty eccentric disc with wide sealing area is designed to reduce seat wear. Low friction, high load journal bearings provide low torque operation. They require no additional lubrication and are highly resistant to solvents, industrial chemicals, sludge and dirt contamination. Stem disc springs allow thermal expansion and provide constant grounding of disc/stem to body. Combination of three seat types offers drop-tight sealing to 1480 psi, handling of ladings up to 1000ºF and fire-safe protection in either direction of flow. Body gasket provides tight seal between seat retainer and body. Wafer style shown SD10225 F E A T U R E S A N D B E N E F I T S p1

4 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V A L V E S W-K-M SO2 FO2 MO1/MO3 Offset from center of valve A C B Three seat designs The standard polymer seat (SO2) is bi-directional with an extended pressure responsive sealing lip. The patented fire-tested, bi-directional metallic seats (FO2) provide a metal-to-metal pressure responsive seal. Properly fitted with metallic seats and high temperature seals, DynaCentric valves have demonstrated they are capable of providing fire-test performance in accordance with API 607. This unique design provides fire-test capabilities regardless of flow direction. Valves constructed of 316 stainless steel and assembled with the proper trims and Ni-Cr Alloy (UNS No. 6625) seats (M03) are capable of handling temperatures to 1000ºF. MO1 seats are suitable for temperatures to 750ºF. Drop tight sealing to 1480 psi. SO2 and FO2 seat designs provide drop tight sealing: SO2 to 720 psi, FO2 to 1480 psi. Disc design reduces seat wear Precision machined from carbon steel or alloy steels, the rugged valve disc is designed for gradual engagement into seat to prevent pinching or cutting. Eccentric positioning of stem allows disc to swing free of seat in open position, reducing operating torque and wear. Special surface coatings such as stellite overlay are available for critical or severe service conditions. Positively retained stem prevents blowouts The tamper-proof design not only meets but exceeds the requirements of ANSI B The disc, disc pins and stem design meet ASME requirements for maximum torsional and bending stress. Additional blowout prevention is provided, should stem or disc pin failure occur. Seat retainer has many advantages Lug body seat retainers are designed to minimize deflection and provide fullpressure, end-of-line sealing capability. Seat retainer capscrews for both wafer and lug body designs are outboard of the lading to prevent corrosion and positioned so they do not interfere with flange gasket seals, including API 601 standard spiral wound gaskets. An additional body joint gasket on metal seated valves between seat retainer and body assures zero leakage. Absolute containment of the lading is assured under the most adverse conditions of shock, vibration or line stress. Deep stuffing box for extended life Deep stuffing box design includes stainless steel fasteners as standard and is available with TFE chevron or hightemperature compression packing for long life and positive stem seal. Live loaded packing assemblies and double stuffing box with purge/monitor port available upon special request for critical applications. Offset from center of seat E SPECIFICATIONS Sizes 3" - 24" Working pressures Up to 1480 psi (3" - 12" ANSI Class 150, 300, 600) (14" - 24" ANSI Class 150, 300) Operating Temperatures Up to 1000ºF (538ºC) Body Styles Flangeless wafer, threaded lug. See page 7 for technical specifications. Standard Materials Body - carbon steel, stainless steel Stem stainless steel Disc - stainless steel Seat - SO2 - RTFE FO2 - fire-safe MO1/ MO3 - metal seat Optional Materials Seat/seal trims available for several hundred ladings. F E A T U R E S A N D B E N E F I T S p2

5 B U T T E R F L Y V A L V E S Acclaimed as the most durable of all resilient-seated butterfly valves in the industry, this valve excels in a wide variety of applications. Cast in both wafer and tapped-lug patterns in a wide variety of material choices, Demco butterfly valves feature a one-piece body for minimum weight and maximum strength. The unique stem hole design in the disc ensures a dry stem journal, and the hard-backed seat (2" - 36") allows ease of installation, reliable operation, and is field-replaceable without special tools. Demco butterfly valves are available in sizes 2" thru 48". Engineered for long-term, maintenance-free performance, Demco butterfly valves are commonly selected for a variety of applications spanning a wide range of industries: Chemical and petrochemical Agriculture Oil and gas drilling and production Food and beverage Water and waste water Cooling towers (HVAC) Power Mining and materials Dry bulk handling Marine and government Features/Benefits Bi-directional sealing This valve provides bi-directional sealing at full-rated pressure with identical flowway from either face. Integral flange seal Molded into the edge of the seat is an integral flange seal which accommodates ANSI weld neck, slip-on, threaded and socket flanges as well as stub end type C flanges. ANSI class 150 rating Body rating is ANSI class 150 (285 psi non-shock). Wafer body diameters are Flatted double D upper stem Large flange top for ease of power automation. (Full line of actuation and accessories offered.) Bronze bearings Blowout proof stems MSS SP-25 marking is standard. Triple stem seal Positively oriented disc High flow disc Hard backed cartridge seat (2" - 36") One piece body Wafer style shown F E A T U R E S A N D B E N E F I T S p3

6 B U T T E R F L Y V A L V E S designed to self-center in ANSI 150 flange patterns. Multiple pressure ratings Three drop tight pressure ratings are offered for 2" to 12" sizes. Normally, 200 psi shutoff is used in butterfly applications. However, 285 psi shutoff is optionally available for higher pressure applications. For smaller actuator sizing, 50 psi valves offer reduced torque. 50 psi and 150 psi drop tight pressure ratings are offered on 14" to 48" sizes. For minimum torque where drop tight closure is not required, throttling valves are available. Hard-backed seat A Dry stem journal eliminates potential for leakage The Demco disc is uniquely designed with a continuous annular raised land around the stem hole and disc edge which presses into the seat flat at every angular position. The resilient seat presses back with a higher specific force than the line pressure, preventing leakage to the stem. In addition, two O-ring ribs are provided in the seat stem bore creating a triple stem seal. In competitive stem seal designs with boot seats, a seal is accomplished by an interference squeezing on the stem or an O-ring in the stem journal. The potential for leakage behind the seat is high. As the disc wipes the seat, elongation of the stem seal area allows leakage to collect behind the seat. This condition is eliminated by Demco s dry stem journal and hard-backed seat. Hard-backed cartridge seat (2"- 36") The Demco cartridge seat is constructed by permanently bonding a resilient elastomer to a rigid backing ring. In addition to superior sealing integrity, this design: 1) makes valve installation easier because no special precautions are required for disc position. This is especially advantageous when installing valves with fail closed actuators; 2) eliminates high torque and premature failure caused by elastomer distortion as found in other non-rigid seat designs; 3) simplifies seat replacement because it is slip fitted into the body, with no need for special tools. Positively oriented disc Proper orientation of the stem/disc connection is assured by the rectangular drive. In 2" - 24" size valves, the disc is permitted to float on the stem to perfectly center in the valve seat. This design enhances drop tight sealing and prolongs service life. End-of-line service Lug body valves may be used in end-ofline service, with downstream piping removed. (Only weld neck or socket flanges can be used for this service.) Since upstream pressure is excluded between the flange and the seat face by the exclusive Demco flange seal, there is no effective force to slide the seat downstream. Demco 2" - 12" Lug Butterfly Valves are suitable for liquid service up to 200 psi with downstream piping removed (150 psi 14" - 36"). Lug body valves are recommended for isolation of pumps, control devices or other system components which may need to be removed for repair or replacement. Lug valves are also suitable for installation at points from which piping expansion may proceed. Such valves are normally blanked with blind flanges, to protect the exposed seats, until new piping is attached. C B SPECIFICATIONS Sizes 2" - 48" Body type and style designations Long neck NE-C and NF-C: 2" - 48", wafer and lug 2" - 36", 42" - 48" flanged. Short neck NE-I, NE-I Sanitary and NE-IT: 2" - 12", wafer and lug. Notched NE-D: 2" - 12", wafer Pressure rating 2" - 12" 0 (Throttling), 50, 200 and 285 psi 14" - 48" 0, 50 and 150 psi See page 21 for technical specifications. Operating Temperatures -30ºF to +300ºF (-34ºC to +204ºC) depending on seat material selection and application Standard Material Options Bodies and discs: Iron, steel, stainless steel and bronze Seats: Buna, EPT, Viton, Neoprene Stems: 416 SS, 316SS, Monel D F E A T U R E S A N D B E N E F I T S p4

7 S T Y L E S A N D A C C E S S O R I E S This versatile valve comes in a variety of styles to suit an even wider range of applications. In addition, a variety of quality accessories are available to further enhance its suitability to the application. Series NE-C Valve Sizes 2" to 12", this series is a general purpose valve with neck length designed to provide full clearance of the valve top over two inches of insulation on ANSI 150 pipe flanges; available in both wafer and lug styles. Series NE-I Valve Sizes 2" to 12", it is suited for a wide range of applications in many industries, including food and beverage utilities and process flow lines. This short neck design is offered in a wide variety of body materials. The valves are designed for installation between ANSI 125/150 flanges. system gives absolute assurance of sanitary butterfly valve construction. Drilled passageways, a design originated by Demco, vent the entire interior of the disc to atmosphere. No closed chamber is provided for the culture of undesirable organisms. Discs are produced from investment castings, smooth and non-porous. Stem bosses are minimized for increased flow. The projecting inner surface of the resilient seat contacts and is compressed by the mating flange to form a smooth and uninterrupted flow way. This positive seal between the innermost contact of the seat and flange ensure aseptic conditions after a piping flush. Sanitary Features A B Series NE-D Valve Sizes 2" to 12", it is a short neck valve with body notches to fit popular lightweight flange patterns, making it ideal for bulk material handling and the transportation industry. Valves will also center in ANSI 125/150 flanges. Series NF-C Valve (14" - 48") Sizes 14" to 36" are available in both wafer and lug styles. The wafer body has two drilled locator lugs at top and bottom for ANSI 150 flanges. Bronze bearings are installed on both stems for minimum operating torque. 42" and 48" sizes are available with flanged bodies. Series NE-I Sanitary Valves Sizes 2" - 12", it is similar to our Series NE-I valve, but is exclusively designed to meet the rigorous requirements of sanitary service in the food and beverage industry. The body is available in bronze, stainless steel, aluminum or electroless nickel-coated ductile iron. FDA - approved materials are used for all wetted parts. Handle parts are bronze and stainless steel, permitting caustic washdown. Other benefits include: Demco dry journal stem seal Series NEI-T Teflon Valves Because of the inert, aseptic non-stick character of Teflon, Demco s NEI-T Teflon-lined butterfly valve is ideal for clean lines in food and beverage plants. The Teflon seat consists of a virgin Teflon liner overlaying and bonded to an elastomer cushion (either Buna-N or EPT are available) which provides resilience for sealing. The Teflon liner extends over the seat faces, completely covering and sealing the resilient material from contact with line fluids. Exclusive design features of this valve confine wetted parts to the disc and seat. The stems and body are permanently sealed from line fluids. The flow way formed with adjacent piping is free of traps to assure aseptic conditions when the lines are flushed. The series NEI-T also features the same vented disc and stem design as the NE-I Sanitary valve. Series NF-C 16" Series NF-C 30" C D D F E A T U R E S A N D B E N E F I T S p5

8 S T Y L E S A N D A C C E S S O R I E S Demco NE-C wafer with Series DR actuator. A2 A1 Series R diaphragm actuator B Stem extension with handle on Series NE-I butterfly valve Actuators Demco Series DR pneumatic actuators (A1) are available in double-acting or fail-safe, spring return models. Series DR actuators are compact, high-torque, piston actuators. Series R diaphragm actuators (A2) incorporate a heavy-duty, enclosed rack-and-pinion linkage. Diaphragm actuators are suitable for low-pressure, pneumatic service. Electric actuators (A3) are used when compressed air is not available for pneumatic operations. Handles and stem extensions Three basic handle designs interchange on any 2" to 12" valves: ten position locking, two position locking and memory stop. Memory-stop handles provide throttling which is infinitely adjustable and can be set by a lock nut with memory-stop setting (adjustable open stop). Handles are available in basic trim, corrosion-resistant trim and sanitary trim. Stem extension are fabricated from carbon steel parts and contained in a tubular housing. Gaskets or O-rings seal the stem extension at top and bottom. These extensions are fabricated to specified lengths. Gear operators Demco weatherproof gear operators are offered with a choice of handwheel, chain-wheel, or square nut. The worm gearing has self-locking set screws to control open and closed positioning or an optional adjustable memory stop for balance return to a preset open position after closing. A3 Electric actuator C Gear operator F E A T U R E S A N D B E N E F I T S p6

9 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Standards and Compliance DynaCentric valves comply with the following design and testing standards: ANSI B16.5 (Steel Pipe Flanges and Flange Fittings); ANSI B16.34 (Steel Valves); ANSI/ FCI 70-2 (Control Valve Seat Leakage); MSS-SP-6 (Standard Finishes for Pipe Flanges); MSS-SP-25 (Standard Marking System for Valves); MSS-SP-55 (Quality Standard for Steel Castings); MSS-SP-68, API 609 (Butterfly Valves). In addition, DynaCentric valves can be supplied to comply with these standards: ANSI B31.1 (Power Piping); ANSI B31.3 (Chemical Plant and Petroleum Refinery Piping); MSS-SP-61 (Pressure Testing of Steel Valves); and API 598 (Valve Inspection and Testing); and API 607, fire-test specifications. DynaCentric valves trimmed for sour gas service in accordance with NACE MR (latest issue) are available from W-K-M in both carbon steel and alloy construction. How to Order Example: std wafer carbon steel 3" Class 150 with handle: 03-A S02-11/HL X X A5 X X X X X X X X X X / X X Size Body Trim Seal Packing Inches Group Group Group Group 4 Actuation 3" 03 4" 04 6" 06 8" 08 10" 10 Class Material Style 1=150 1=CS 0= Wafer 3=300 2=SS 1= Lug 6=600 3=CS2 1 4 = CS/ENC CS Disc* 17-4 Stem SS Disc 17-4 Stem SS Disc Ni-Cr 5 03 Stem TFE TFE VEE 11 High Temp Graphitized 13 Grafoil 14 S01 Bare Stem 00 Handle HL Handwheel Worm Gear WG Chainwheel Worm Gear CH 12" 12 14" 14 16" 16 18" 18 20" 20 24" 24 5=LCC Ni-Cu 6 Disc & 04 Stem SS Disc 316 SS 05 Stem 2 SS Disc HF-6 O/L Stem SS Disc HF-6 O/L 7 07 Ni-Cr Stem 5 RTFE S02 SS/RTFE 3 F02 3 NI-Cr 5 Alloy (UNS No. F )/RTFE 316 SS M01 Ni-Cr 5 Alloy (UNS No. M ) Note: Valves with optional materials of construction are available on application. 1 Controlled hardness carbon steel (H 2 S Service). 2 Valves equipped with 316 SS stems may require derating depending on size and class. See page 11 for actual valve ratings. 3 Standard seat for Class 600 valves. 4 SS packing adjustment studs and nuts are standard. *Carbon steel discs (14" and larger consult factory). 5 Ref. inconel. 6 Ref. monel. 7 Ref. Stellite overlay p7

10 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Special Service Valves High Temperature DynaCentric valves for high temperature service are equipped with a 316 stainless steel seat (M01), 316 stainless steel stem bearings and high temperature seals. This seat/seal combination is rated up to 750 F in carbon steel bodies. Ni-Cr Alloy (UNS No. 6625) seats (M03) and stainless steel bodies can be utilized up to 1000 F. Leakage rates for metal seated valves are within the service limits of ANSI/FCI 70-2 Class IV. DynaCentric valves furnished with this seat perform well in steam, hot oil and heat transfer fluids. Vacuum Service The drop-tight sealing capabilities of DynaCentric valves make them an excellent selection for vacuum service. S01, S02, and F02 seat-seal codes are suitable for vacuum service to 20 microns absolute. Inverted packing or purged stuffing box configuration is available on request. Sour Oil and Gas Service DynaCentric valves with sour gas trims are available for H 2 S service in accordance with NACE MR-0l-75, latest issue. Low Temperature Service DynaCentric valves for temperatures to 50 F are available in both 316 stainless steel construction and low temperature carbon steel. Oxygen Service DynaCentric valves provide the positive shut-off and tight sealing necessary for gaseous oxygen service. Due to the risk of explosion and fire inherent in such service, positive grounding for the disc and stem with the Belleville disc springs is standard. Positive safeguards have been established in order to conform to the requirement that valves for oxygen service must be completely free of oil, grease, combustible material, slag, metal shavings, paint, rust or various fibers. All parts are cleaned in solvent and carefully inspected under black light for contamination. After assembly and testing with Nitrogen, each valve is individually tagged and sealed in a polyethylene bag. Valves for such service may be supplied in any materials, but 316 stainless steel or Ni-Cu Alloy (UNS No. 5500) are recommended. Steam Service DynaCentric valves are ideally suited for applications in service steam. Reinforced TFE seats (S02) with high temperature packing will handle steam to 100 psig saturation pressure. When fitted with 316 stainless steel seats with reinforced TFE inserts (F02), the DynaCentric valve is suitable for steam to 125 psig saturation pressures. The combination of rotary operation, streamlined flow and positive shut-off can result in years of maintenance-free service without the seizures on cool-down, flashing or stem leakage associated with conventional gate or globe valves. p8

11 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M 3" 12" Class 150, 3" 10" Class 300, 3" 8" Class 600 DynaCentric Valves (Wafer style shown, lug style available) Publication TC1508 Standard Materials of Construction Group Item Carbon Steel Stainless Steel Carbon Steel (H 2 S) BODY TRIM 1. Body A516 Gr 70 A351 Gr CF8M A516 Gr Seat Retainer A516 Gr 70 A276 Type 316 A516 Gr Seat Retainer Screw A193 Gr B SS 4. Stem/Disc Spring 18-8 SS 5. Stop Pin 316 SS 6. Stop Pin Plug Carbon Steel 316 SS 7. Stem Bearing TFE/Steel Teflon/316 SS 8. Nameplate 18-8 SS 9. Gland Retainer Carbon Steel Stainless Steel Carbon Steel 10. Gland Retainer Stud 18-8 SS 11. Gland Retainer Nut 18-8 SS 12. Body Gasket See Note (2) 13. Stem A564 Type 630, H H Disc A351 Gr CF8M 16. Stem Pins A564 Type 630, H H Disc Spacer 316 SS 18. Stem Key* Carbon Steel 19. Stem Retainer Pins 316 SS 20. Packing Spacer 316 SS 21. Gland Ring 316 SS SEAL 22. Seat See Note (1) PACKING 23. Packing Set See Note (3) Note (1): Seat assemblies consist of the following: TYPE S Class 150 Virgin TFE (available in Class 150 only) Standard Class 150 and 300 Reinforced TFE TYPE F Metal, Fire-Tested, Class 150, 300 and 600 Stainless Steel with Reinforced TFE Insert TYPE M Metal, High Temperature Class 150, 300 and Stainless Steel with 316 Stainless Steel Insert Note (2): Standard valves do not require body gaskets. FO2, fire tested and high temperature, MO1/MO3, valves are equipped with composite fiber body gaskets. Note (3): Packing sets consist of the following: TFE VEE High temperature, graphitized Grafoil *Stem key for 8" valves and larger. Hard Chrome Plated on FO2, MO1 and MO3 only. p9

12 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M 14" 24" Class 150, 12" 24" Class 300, 10" 12" Class 600 DynaCentric Valves (Lug style shown, wafer style available) Standard Materials of Construction Group Item Carbon Steel Stainless Steel BODY TRIM Carbon Steel (H 2 S) 1. Body A216 Gr WCC A351 Gr CF8M A216 Gr WCC RC Seat Retainer A516 Gr 70 A276 Type 316 A516 Gr 70 RC Seat Retainer Screw A193 Gr B SS 4. Stem/Disc Spring 18-8 SS 5. Stop Pin (Internal Welded) 316 SS 7. Stem Bearing Teflon/Steel Teflon/316 SS 8. Nameplate 18-8 SS 9. Gland Retainer Carbon Steel Stainless Steel Carbon Steel 10. Gland Retainer Stud 18-8 SS 11. Gland Retainer Nut 18-8 SS 12. Body Gasket See Note (2) 25. Bottom Cover Plate Carbon Steel Stainless Steel Carbon Steel RC Bottom Cover Gasket Composite Fiber 27. Bottom Cover Screw A193 Gr B SS A193 Gr B7 13. Stem A564 Type 630, H H Disc A216 Gr WCC A351 Gr CF8M 15. Lower Stem 16. Stem Pins A564 Type 630, H H1150 A564 Type 630, H H Disc Spacer 316 SS 18. Stem Key Carbon Steel 19. Stem Retainer Pins 316 SS 20. Packing Spacer 316 SS 21. Gland Ring 316 SS SEAL 22. Seat See Note (1) PACKING 23. Packing Set See Note (3) Publication TC1508 Note (1): Seat assemblies consist of the following: TYPE S Class 150 Virgin TFE (available in Class 150 only) Standard Class 150 and 300 Reinforced TFE TYPE F Metal, Fire-Tested, Class 150, 300 and 600 Stainless Steel with Reinforced TFE Insert TYPE M Metal, High Temperature Class 150, 300 and Stainless Steel with 316 Stainless Steel Insert Note (2): Standard valves do not require body gaskets. FO2 fire tested, fire safe and high temperature, MO1/MO3 valves are equipped with composite fiber body gaskets. Note (3): Packing sets consist of the following: TFE VEE High temperature, graphitized Grafoil Hard Chrome Plated on FO2, MO1 and MO3. Electroless Nickel Plated. p10

13 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Seat-Seal Material Codes and Ratings Material Codes This chart is an abbreviated guide to the chemical resistance and pressure-temperature limitations of seat-seal materials used in DynaCentric valves. Complete ratings curves are shown below. For additional information, please consult your DynaCentric representative or the factory. Seal Code Seat Material ANSI/FCI 70-2 Shutoff Class Service Application S01 TFE 6 (VI) Seats are virgin TFE. Use where lading contamination from glass or other fillers is not desirable, such as in food service. Available in Class 150 valves only. Temperature range is 50 F to +400 F. Drop tight. S02 RTFE 6 (VI) Seat material is TFE reinforced with inert materials for use at elevated temperatures and pressures. Same chemical resistance as virgin TFE except slightly affected by hot alkaline solutions. Suitable for saturated steam to 100 psig. Temperature range is 50 F to +500 F. Drop tight. F02 SS/RTFE 6 (VI) Seat consists of stainless steel rings with a reinforced TFE insert. Recommended trim for fire-test applications and for steam service to 125 PSI saturation. Temperature is 50 F to +500 F. Drop tight. F03 Ni-Cr Alloy 6 (VI) Seat consists of Ni-Cr Alloy (UNS No. 6625) with a reinforced TFE insert. (UNS No. 6625) / Recommended trim for fire-tested applications and for steam service RTFE to 125 psi saturations. Temperature range is 50 F to +500 F. Drop tight. M SS * Recommended trim for saturated steam above 250 PSI, hot oils and gases, and temperatures to 750 F. Pressure/temperature range is same as body rating. Meets ANSI/FCI M03 Ni-Cr Alloy * Same as M01 but for temperatures from 750 F to 1000 F. (UNS No. 6625) *Standard leakage rate of metal seated valves is less than.005 ml/psi/nps. Class V Shut-off can be furnished on request. Pressure-Temperature Limitations Seat ratings are based on differential pressures with the disc in the fully closed position and refer to seat only. Body pressure/ temperature ratings appear on page STEAM MO1 MO MAX. P-PSI FO SO2 MAX. MO TEMPERATURE F p11

14 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Valve Body Pressure Ratings Pressure/Temperature Ratings for DynaCentric Valve Bodies with Standard Stems Temp Class 150 Class 300 Class 600 F CS 316 SS CS 316 SS CS 316 SS -20 to Stem Material: A564 Type 630, H H1150. In accordance with ANSI B Maximum Shut-Off Pressures for DynaCentric Valves with 316 Stainless Steel Stems (CWP) Size (in) P Max. 316 SS Stems Class 150 Class 300 Class Stem Material: ASTM A276 Type316; Cond. A. 30,000 Minimum Yield 75,000 Minimum Tensile Ratings shown above are maximum working pressure ratings for the valve body at various temperatures. All pressures are PSIG. Practical pressure limitations according to actual service conditions are determined by the seat ratings shown on page 11. These valve body ratings are based on the following material specifications: CS-ASTM A516 Grade 70 and A216 Grade WCC (NOTE: Carbon steel listed is not recommended for prolonged usage above 800 F.) 316 SS-ASTM A351 Grade CF8M. Valves with 17-4 PH stems are only recommended up to a maximum temperature of 650 F. Ni-Cr Alloy (UNS No. 7718) stems are required for temperatures above 650. NOTE: Cold working pressures for the DynaCentric valves equipped with 316 SS stems will be derated. See table above. Ni-Cr Alloy (UNS No. 7718) or Ni-Cu Alloy (UNS No. 5500) stems can be furnished for applications requiring high corrosion resistance and full ANSI ratings. p12

15 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Valve Sizing Formulas Proper valve selection is dependent on several factors for both liquid and gas flow, as well as the physical limitations of the valve as established by the manufacturer. The following information is presented for handy and quick reference. The flow coefficient (C V) is the most universally accepted measure of a valve s capacity to handle flow. A dimensionless entity, C V is defined as the number of gallons per minute of water at standard conditions (60 F and 14.7 psia) which will flow through a given flow restriction with a pressure drop of 1 psi. Once determined, the C V of a valve provides a capacity index by which one is able to readily estimate the required size of a flow restriction for controlling the fluid flow of any system. For liquid service: C V = Q L Q L = C V ( 2 Q L P = S G C V ) For gas service: C V = Q G 1360 S G P P S G S G T R P x P 1 For steam service (saturated): C V = W 2.1 P(P 1 + P 2 ) W = 2.1C V P(P 1 + P 2 ) For steam service (superheated): C V = W( TS ) 2.1 P(P 1 + P 2 ) W = 2.1C V P(P 1 + P 2 ) ( T S ) Where: C v = valve flow coefficient P 1 = upstream pressure, psia P 2 = downstream pressure, psia P = pressure drop P 1 P 2, psi Q G = gas flow rate, SCFH Q L = liquid flow rate, U.S. gpm S G = specific gravity of fluid T R = temperature, R (460 + F) T S = steam superheat, F W = flow rate, lbs/ hr P v = vapor pressure, psia P x P 1 Q G = 1360 C V S G T R 2 S G T R Q G P = P C V ) ( These formulas are generally accurate for gas flows where P <.1P 1. For P >.1P 1, consult factory for assistance in sizing. Cavitation DynaCentric valves, because of their inherently high flow capacities, have a greater tendency to cavitate at high pressure drops. Cavitation occurs in liquids if the static pressure of the flowing liquid decreases to a value less than the fluid under pressure. This phenomenon can create accelerated wear and deterioration of valves and piping as well as annoying noise and vibration problems. To avoid cavitation in piping, the following formula should be employed: P max = 0.33 (P 1 P V ). This formula can also be safely used where reducers are employed. Reducers When valves are mounted between pipe reducers, a loss in valve capacity occurs with an additional pressure drop across the system due to contractions and sudden enlargements. This arrangement is often employed with DynaCentric valves where the desired C V for the control valve results in a valve size that is smaller than the line size. Use the following equation to obtain the corrected flow coefficients for the DynaCentric valve when installed in combination with reducers. Where: R = ( d 2) 2 2 D C ( V 2) 2 d C VR = C V R C V = sizing coefficient determined by standard calculations d = nominal valve size, inches D = line size, inches C VR = corrected flow coefficient for valve between reducers p13

16 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Flow Characteristics (C V) The practical control range of this type of valve occurs where continuous throttling can be effected without significant loss of accuracy or decrease in valve life. The usable rangeability for DynaCentric valves is between 20 and 70 opening, resulting in a ratio of 10:1. In sizing the DynaCentric valve for throttling applications, a full open C V should be selected that is approximately 1.8 times the C V determined from calculations. Under normal flow conditions, this selection will provide a valve opening of C V values equal the flow of water in U.S. gallons per minute per 1 PSI pressure drop. Series A5100, Class 150 Valve Disc Angle, Degrees Open Size Typical Characteristic Curve Series A5300, Class 300 Valve Disc Angle, Degrees Open Size Series A5600, Class 600 Valve Disc Angle, Degrees Open Size p14

17 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M The Torque Values shown in these tables are net required operating torques for actuator sizing. An appropriate safety factor is included for normal wet operating torque. SO seats upstream - Valve torque (in.lb.) psi psi psi psi psi psi psi psi psi psi SO seats upstream - Valve torque (in.lb.) psi psi psi psi psi psi psi psi psi psi For severe service, additional safety factor should be added: Dry gas or slurry Low Temperature Emergency Shutdown p15

18 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M The Torque Values shown in these tables are net required operating torques for actuator sizing. An appropriate safety factor is included for normal wet operating torque. FO/MO seats upstream - Valve torque (in.lb.) psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi FO/MO seats downstream - Valve torque (in.lb.) psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi psi For severe service, additional safety factor should be added: Dry gas or slurry Low Temperature Emergency Shutdown High Temperature ( F) Extended High Temp. ( F) p16

19 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Dimensional Data Series A5100, Class 150, 285 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q / / /2 7 5 / / /16 7/8 3/ / /8 2 2 / /8 8 1 / /8 41/ / /16 7/8 3/ / / / /8 9 3 / /4 49/ / /16 7/8 3/ / / / / /16 49/ /4 2 1 /8 4 1 /4 5/8 1 1 /4 3/ /8 1 9 / / / / / /4 57/ /4 2 1 /8 4 1 /4 5/8 1 1 /4 3/ /2 1 9 / / / / / /4 57/ /4 5 1 /2 13/ /8 1/ /2 2 Valve Size R S T U V W X AA EE FF GG HH Weight-Lbs Lug Body Weight-Lbs Wafer Body 3 5 /8 7/ /2 5 / /8 2 1 / /32 11/ /8 7/ / /4 2 1 / /32 11/ /8 5/ / /2 2 1 / /32 11/ /4 Sq. 1 1 / /2 3 / /2 9/ /4 Sq. 1 1 / / /2 9/ /16 Sq. 1 3 / /4 7 / /4 3 1 /2 5 5 /16 13/16 9/ *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. Series A5100, Class 150, 285 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q / / / / / /4 3 7 / /8 7/8 1 3 /4 1/ / /4 4 9 / / / /8 1 1 / /4 3 7 / /8 7/8 1 3 /4 1/ / / /2 4 1 / / / / / /4 4 3 /4 9 1 / / / / / / / /4 9 1 / / /8 6 1 / / / / / /2 4 3 /4 9 1 / / /4 Valve Size R S T U V W X AA EE FF GG HH Weight-Lbs Lug Body Weight-Lbs Wafer Body 14 5 /16 Sq. 1 3 / / /2 3 1 / /32 13/16 9/ /8 Sq. 1 3 / / / / /16 11/16 13/ /2 Sq /4 11/ / / / /8 x 6 15 /16 15 /16 13/ /2 Sq /4 11/ / / / /8 x 6 15 /16 15 /16 13/ /8 Sq. 2 1 / / / / / /8 x 6 15 /16 15 /16 13/ *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. p17

20 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Dimensional Data Optional Flange Mounting Bracket (Actuator Code-FG) Note: Minimum pipe I.D. required for disc swing clearance: Schedule 80 pipe or equivalent. Series A5300, Class 300, 740 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q / / /2 7 5 / /8 49/ / /16 7/8 3/ / /8 2 3 / /8 8 1 / /8 49/ / /16 7/8 3/ / / / /8 9 3 / /4 49/ / /16 7/8 3/ / / / / /16 57/ /8 4 1 /4 5/8 1 1 /4 3/ /8 1 9 / /4 3 1 / / / / /4 2 3 /4 5 1 /2 13/ /8 1/ / / / / / / / /4 2 3 /4 5 1 /2 13/ /8 1/ /2 2 3 /4 Valve Size 10" - 12" Class " - 12" Class 300 R S T U V W X AA EE FF GG HH Weight-Lbs Lug Body Weight-Lbs Wafer Body 3 5 /8 7/ /4 3 / /8 2 1 / /32 11/ /8 7/ /4 3 / /4 2 1 / /32 11/ /8 5/ /4 3 / /2 2 1 / /32 11/ /4 Sq. 1 1 / /4 7 / /2 9/ /16 Sq. 1 3 / / /8 3 1 /2 5 5 /16 11/16 9/ /8 Sq. 1 3 / / /4 3 1 /2 5 5 /16 11/16 9/ *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. Optional Flange Mounting Bracket (Actuator Code-FG) Note: Minimum pipe I.D. required for disc swing clearance: Schedule 80 pipe or equivalent. (18" - 24" 300 schedule XS only) Series A5300, Class 300, 740 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q /2 4 5 / / / /4 4 3 /4 9 1 / / /4 5 9 / / / / /2 4 3 /4 9 1 / / / / / / / /4 4 3 /4 9 1 / /4 3 3 / /8 7 1 / / / / / /2 3 3 / /16 4 Valve Weight-Lbs Weight-Lbs R S T U V W X AA EE FF GG HH Size Lug Body Wafer Body 14 1 /2 Sq /4 11/ / / / /8 x 6 15 /16 15 /16 13/ /2 Sq /2 11/ / / / /8 x 6 15 /16 15 /16 13/ /8 Sq. 2 1 / / / / / /8 x 6 15 /16 15 /16 13/ /8 Sq. 3 1 / / /8 SEE ABOVE *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. p18

21 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M Dimensional Data Series A5600, Class 600, 1480 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q / / /2 7 5 / /8 49/ / /16 7/8 3/ / /8 2 3 /8 6 3 /4 8 7 / /8 57/ / /16 7/8 3/ / / / / / /2 2 1 /8 4 1 /4 5/8 1 1 /4 3/ /8 1 9 / / / / / /8 1 9 / /4 2 3 /4 5 1 /2 13/ /8 1/ / / / / /8 1 1 / /4 5 1 /2 13/ /8 1/ /2 2 3 /4 Valve Weight-Lbs Weight-Lbs R S T U V W X AA EE FF GG HH Size Lug Body Wafer Body 3 5 /8 7/ /4 3 / /8 2 1 / /32 11/ /8 5/ /2 7 / /8 2 1 / /32 11/ /4 Sq. 1 1 / / /8 3 1 /2 9/ /16 Sq. 1 3 / /8 1 1 / /8 3 1 /2 5 5 /16 11/16 9/ /8 Sq. 1 3 / /2 1 1 / /2 3 1 /2 5 5 /16 11/16 9/ *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. Series A5600, Class 600, 1480 PSI CWP* (inches) Valve Size A B C D E F G H J K L M N P Q / / / / /4 1 1 / /4 4 3 /4 9 1 / /2 3 Valve Weight-Lbs Weight-Lbs R S T U V W X AA EE FF GG HH Size Lug Body Wafer Body 12 1 /2 Sq / / / / /8 x 6 15 /16 15 /16 13/ *Pressure ratings are in accordance with ANSI B16.34 for group 1.1 carbon steel valves. Pressure ratings will vary with different body materials. p19

22 D YNAC ENTRIC H IGH P ERFORMANCE B UTTERFLY V ALVES W-K-M W-K-M DynaCentric Valves Manual Actuators Worm Gear Actuators Worm gear actuators are available as optional equipment, for DynaCentric valves sizes 3" through 8". All larger size valves require worm gear actuators or power actuation. Handle operated valves, sizes 3" through 8", can be converted in the field to worm gear operation. No modification is required to accommodate the addition of the worm gear unit. Valve Size Dimensions (inches) Weight (lbs) and Class A B C D E F (Dia.) G.O. Mtg. 3" 150/300/ /8 2 5 /8 1 1 /8 6 3 /8 1 3 / /2 4" 150/ /8 2 5 /8 1 1 /8 7 1 /4 1 3 / /2 4" /8 2 5 /8 1 1 /8 7 5 /8 1 3 / /2 6" 150/ /8 2 5 /8 1 1 /8 8 1 /2 1 3 / /2 6" / / /8 2 1 / " 150/ / / / " /8 3 1 /4 1 1 / / " / / / " /8 3 1 /4 1 1 / / " /8 4 9 / / /2 3 1 / " /8 3 1 /4 1 1 / / " /8 4 9 / / /4 3 1 / " /8 4 9 / / / / " /8 3 1 /4 1 1 / / " /8 4 9 / / /8 3 1 / " /8 4 9 / / / / " /8 4 9 / / /8 3 1 / " /8 4 9 / / /2 3 1 / " / /2 2 1 / / / " /8 4 9 / / / / " / /2 2 1 / /4 4 5 / " /8 5 3 / / /8 6 1 / Handle Actuators Valve Size & Class Handle No. Dimensions (inches) A B C D E Wt. (lbs) 3" 150/300/600 H /8 7 5 /8 4 1 /2 5 9 /16 6 4" 150/300 H /4 8 1 /2 4 1 /2 5 9 /16 6 4" 600 H /8 8 7 /8 4 1 /2 5 9 / " 150/300 H /2 9 3 /4 4 1 /2 5 9 / " 600 H / /4 4 1 /2 5 9 / " 150 H /2 4 1 /2 5 9 /16 10 CAUTION: Handle operated valves should be installed with seat downstream. Handles should only be used up to the following differential pressures: 3" valves to 400 psi 4" valves to 300 psi 6" valves to 150 psi 8" valves to 50 psi p20

23 S E R I E S NE-C, NE-I, NE-D, NEI-T, 2" 12" Parts Detail NE-D Ref. No. Req d Component Material Description NE-C NE-I NEI-T 1 1 Body * 2 1 Seat * 3 1 Disc * 4 1 Upper Stem * 6 1 Lower Stem * 7 2 Spring Pin Stainless Steel 14 1 Retainer Stainless Steel 22 1 Top O-Ring Buna-N 23 Stem O-Ring Buna-N 24 2 Bearing Bronze *See How to Order for material choices/styles. Complete material specs on pages 43 and req d. for throttling valves only. How to Order (example: 6" NE-C, 200PSI, Wafer, Standard trim with handle ) X X X X X X X X X X X Base Part Body Body Stem Disc Seat Actuation Number Configuration Material* Material Material Elastomer NE-C/NE-I/NEI-T Wafer 1 Lug 5 NE-D Wafer 1 Based on valve series and shut off pressure. See page 24. NE-C (Longneck) Ductile Iron (lug) 1 Cast Iron (wafer) 2 NE-I & NE-I Sanitary Ductile Iron (NE-I, wafer only) 1 Aluminum Bronze 3 Carbon Steel (NE-I only) 4 Aluminum (NE-I, wafer only) 5 ENC Coated Ductile Iron 6 Stainless Steel 8 NE-D Ductile Iron 1 NEI-T Ductile Iron Wafer Shortneck 1 Lug Longneck Gray Iron 2 (longneck wafer) Aluminum Bronze 3 Carbon Steel 4 Aluminum (wafer only) 5 Stainless Steel 8 NE-C, NE-I & NE-D 416 SS SS** 2 Monel (6) 3 NEI-T 316 SS Vented*** SS Solid*** 9 NE-I Sanitary 316 SS** 2 **Standard coating is green enamel; other coatings available on request. **17-4 PH SS for 8"-12" upper stem only. ***Except 17-4 PH upper 8" & 10" psi only. 2. Except 285 psi. 3. Polished ground to # 4 dairy finish, Tumbled vibratory finish to remove as cast surface, Unpolished as cast surface NE-C, NE-I & NE-D 316 SS 2 Monel (6) 3 Aluminum Bronze 4 Ductile Iron Nickel Plated 5 PVF Coated Ductile Iron (1) 6 Alloy 20 (2) 7 Hastelloy C (6) 8 NEI-T & NE-I Sanitary 316 SS/ PVF Coated 0 (NEI-T only) 316 SS Polished (3) SS Tumbled (3) 5 Alloy 20 (NEI-T only) 7 Hastelloy C (NEI-T only) SS Unpolished (3) 9 NE-C, NE-I & NE-D (7) Buna-N 31 Black Neoprene 32 Hypalon (6) 33 Viton (6) 34 Peroxide Cured EPT 35 Natural Rubber 36 White Neoprene 37 ETM Fluorosteam 02 Peroxide Cured Food Grade EPT Peroxide Cured Buna-N Sulfur Cured Food Grade EPT NEI-T Buna-N/Teflon (6) 31 Peroxide Cured EPT/Teflon (6) 35 Sulfur Cured EPT/Teflon (6) 05 NE-I Sanitary All Seats Food Grade Buna-N 31 Black Neoprene 32 Viton 34 EPT 35 Handle 10 Position Lkg. 1 (4) Throttling Mem./Stop White Neoprene 37 Sulfur Cured EPT When these options used with NE-I Sanitary butterfly valves, handles will be bronze with SS parts and fasteners. 5. Gear operator recommended for 8"-12" sizes in all series. 6. See material trademark note on page Other seat options available (consult factory). 2 (4) Square Nut 5 2 Position Lkg. 6 (4) 10 Position Sanitary 8 (NEI-T only) None 9 10 Position Lkg. Corrosion K resistant 2 Position Lkg. Corrosion L resistant Throttling/ Mem. stop M Corrosion resistant Gear Operators (5) Hand Wheel A Crank (2"-12" only) B Chain Wheel C Square Nut D Bare Shaft E p21

24 S E R I E S NF-C, 14" 24" Parts Detail Ref. No. Req d Component Description Material 1 1 Body * 2 1 Seat * 3 1 Disc * 4 1 Upper Stem * 6 1 Lower Stem * 7 2 Spring Pin Stainless Steel 14 1 Retainer (Spacer) Steel 23 Disc O-Ring Buna-N 24 2 Upper Bearing Bronze 25 1 Lower Bearing Bronze *See How To Order for material choices/styles. Complete material specs on pages 43 and Req d. for throttling valves only. 14" 20" Retainer, 24" Spacer. How to Order (example: 18" NF-C, 150PSI LUG, SS trim, Buna-N seat, WGO A) X X X X X X X X X X X Base Part Body Body Stem Disc Seat Number Configuration Material* Material Material Elastomer Actuation Wafer 1 Ductile Iron (lug) SS SS 2 Buna-N 31 None 9 Lug 5 Cast Iron (wafer) SS 2 Monel (2) 3 Black Neoprene 32 Gear Operators Based on shut off pressure. See page 24. Steel (lug) 4 Stainless Steel (lug) 8 Monel (2) 3 Aluminum Bronze Nickel Plated Iron PVF Coated Ductile Iron (1) Hypalon (2) 33 Viton (2) 34 EPT 35 Hand Wheel Chain Wheel Square Nut Bare Shaft A C D E *Standard coating is green enamel; other coatings available on request. (1)150 psi only. (2)See material trademark note on page 47. p22

25 S E R I E S NF-C, 30" 48" Parts Detail Ref. No. Req d Component Description Material 1 1 Body * Seat Hard-Backed "- 36" Seat Elastomer Liner 42"-48" * 3 1 Disc 150 psi * 4 1 Upper Stem * 6 1 Lower Stem * 7 2 Disc Screw 18-8 SS 8 1 Key Stainless Steel 9 2 O-Ring Buna-N 14 1 Spacer Steel 24 2 Upper Bearing Bronze 25 1 Lower Bearing Bronze 26 1 Thrust Collar Bronze 27 1 Set Screw 18-8 SS 28 1 Cap Duct Iron 30"-36" Cast Iron 42"- 48" 29 4 Screw Carbon Steel 30 4 Lockwasher Carbon Steel *See How to Order for material choices/styles. Complete material specifications on page 43 and 44. How to Order (Example: 42", 150 psi, bronze disc, EPT seat with Gear Op A) X X X X X X X X X X X Base Part Body Body Stem Disc Seat Gear Number Configuration Material* Material Material Elastomer Operators Wafer 1 Lug 5 Flange 6 42"& 48" See Page 24 Ductile Iron 1 (Wafer or lug) Cast Iron 2 (Flanged only) 416 SS SS 2 Monel SS 2 Monel 3 Aluminum Bronze 4 Ductile Iron Nickel Plated 5 Buna-N 31 Black Neoprene 32 Hypalon 33 Viton 34 EPT 35 Hand Wheel Chain Wheel Square Nut Bare Stem A C D E See material trademark note on page 47. **Standard coating is green enamel; other coatings available on request. p23

26 B U T T E R F L Y V A L V E S Base Part Numbers/Weights Series NE-C, 2" 12"* Weight (lbs bare stem) Description 2" 2 1 /2" 3" 4" 5" 6" 8" 10" 12" 200 psi psi psi Throttling Wafer Lug Series NE-I, 2" 12"* Weight (lbs bare stem) Wafer Weight (lbs bare stem) Lug Description 2" 2 1 /2" 3" 4" 5" 6" 8" 10" psi psi psi Throttling Iron, Steel, SS Bronze Aluminum Bronze Steel, SS Series NE-I, Sanitary, 2" 12"* Description 2" 2 1 /2" 3" 4" 6" 8" 10" 12" 200 psi Weights See chart above, NE-I, 2" 12" Series NE-D, 2" 12"* Weight (lbs-bare stem) Description 2" 2 1 /2" 3" 4" 5" 6" 8" 10" 12" 200 psi psi psi Throttling Wafer Series NEI-T, 2" 10"* Description 2" 2 1 /2" 3" 4" 6" 8" 10" Weight (lbs-bare stem) Wafer Weight (lbs-bare stem) Lug 150 psi Iron, Steel, SS Bronze Aluminum Bronze Steel, SS *Gear Operator recommended for 8" 12" sizes. See NE-C chart above for weights of Long Neck Wafer and Lug valves. Series NF-C, 14" 24" Description 14" 16" 18" 20" 24" 150 psi psi Throttling Weight (lbs bare stem) Wafer Lug Series NF-C, 30" 48" Description 30" 36" 42" 48" 150 psi Weights C/F C/F C/F C/F C/F = Consult Factory. p24

27 B U T T E R F L Y V A L V E S Series NE- C, 2" 12" Dimensional Data (inches) Size A C D E F G H J K L N P R S 2" / /2" / " / " / " / " / " / " / " / Note: For general dimensions, see page 40. Series NF-C, 14" 24" Dimensional Data (inches) Size A B C D E G H J K L M N P R S T U 14" " " " " *Wafer valve dimension is the bottom figure. Lug valve dimension is the top figure * 1* * 1* / * 1 1 /8* / * 1 1 /8* / * 1 1 /4* /16 5 / /8 3 / /2 3 / /2 3 / /2 3 / Note: For general dimensions, see page 40. p25

28 B U T T E R F L Y V A L V E S Series NF-C, 30" 48" Dimensional Data (inches) Size A B C D E G H J K L M N P R S T U V W X 30" /4-7UNC /4 3 / " /2-6UNC /8 7 / " /2-6UNC 32* /4 3 / " /2-6UNC 36* /4 5 / *42" 36 holes total per side. 48" 44 holes total per side. Note: For general dimensions, see page 40. Series NE-D, 2" 12" 4 8 Dimensional Data (inches) Size A C D E F G H J K L N P R S 2" / /2" / " / " / " / " / " / " / " / Note: For general dimensions, see page 40. p26

29 B U T T E R F L Y V A L V E S Series NE-I, NE- I Sanitary, 2" 12" Dimensional Data (inches) Size A C D E F G H J K L N P R S 2" / /2" / " / " / "* / " / " / " / " / Note: For general dimensions, see page 40. *NE-I Sanitary 5" not available. Series NEI-T, 2" 10" Dimensional Data (inches) Size A C D E F G H J K L N P R S 2" / /2" / " / " / " / " / " / Note: For general dimensions, see page 40. p27

30 B U T T E R F L Y V A L V E H A N D L E S How to Order (XXXXX-00X) XXXXX 00X Base Part Number Trim Standard 1 Corrosion 2 Resistant Sanitary 3 2 Position/10 Position Locking Handles Dimension 2"- 4" 5"- 6" 8"- 12" M N Infinite Throttling with Memory Stop Handle Dimension 2"- 4" 5"- 6" 8"- 12" M N Description 2"- 4" 5"- 6" 8" 10" 12" 10 Position, Std, CR Position, Std, CR Position, Sanitary Position, Sanitary Throttling, Std/CR Throttling, Sanitary Square Nut, Std Position/10 Position Locking Handle Infinite Throttling with Memory Stop Handle Note: These throttling plates and latch apply to Sanitary Trim handles only. Ref. Component Material No. Description Standard Corrosion Resistant Sanitary 5 Screw Steel Stainless Steel Stainless Steel 8 Handle Ductile Iron Ductile Iron Bronze 10 Latch Zinc Plated Steel Stainless Steel Stainless Steel 11 Spring Spring Steel Stainless Steel Stainless Steel 12 Spring Pin Spring Steel Stainless Steel Stainless Steel 15 Throttle Plate Zinc Plated Steel Stainless Steel Stainless Steel 16 Lockwasher Steel Stainless Steel Stainless Steel 19 Nut Steel Stainless Steel Stainless Steel 20 Set Screw Steel Stainless Steel Stainless Steel 25* Throttling Tab Zinc Plated Steel Stainless Steel Stainless Steel 26* Carriage Bolt Steel Stainless Steel Stainless Steel 27* Wing Nut Steel Stainless Steel Stainless Steel 28* Screw Steel Stainless Steel Stainless Steel 29* Nut Steel Stainless Steel Stainless Steel *For Throttling Memory Stop Handle only. Square Nut Handle Component Description Square Nut Hub Throttle Plate Screw Set Screw Screw Lock Washer Material Ductile Iron Steel Steel Steel Steel Spring Steel p28

31 W E A T H E R P R O O F G E A R O P E R A T O R S Manual worm gear operators are self locking in all positions. Adjustment screws stop travel at open and closed positions. Position indicator is standard on all models. Gearing is permanently lubricated. Gray iron weatherproof case and cover enclose a ductile iron gear and hardened steel worm supported by bronze bearings. Standard external coating is green enamel; white epoxy, coal tar epoxy and inorganic zinc primer available, special order. How to Order, 2" 12" (Example: 6" Gear Operator with Handwheel ) X X X X X X X X X X Base Part Case Gear Actuation Valve Configuration Number Material Material Size Gray Iron 2 Ductile Iron 1 Crank 1 2" 4" 1 Standard 2 Handwheel 3 5" 6" 5 Chainwheel 5 8" 7 Square Nut 6 10" 8 None 9 12" 9 Description 2" 4" 5" 6" 8" 10" 12" Operator Base No Additional Information Chain Suffix = Length in Ft.* 4462-XXX Weight (lbs. with handwheel) *Chain Length (XXX) = 0 through 999 ft. (Chain ordered separately) How to Order, 14 " 48" X X X X X X X X X Base Part Number Gear Operator Assembly Part Number Gear Operator Less Actuation 09 Gear Operator With Handwheel 03 Gear Operator With Chainwheel 05 Gear Operator With Square Nut 06 Description 14" 16" 18" 20" 24" 30" 36" 42" 48" Operator Base No Additional Information Chain Suffix = Length in Ft.* 4462-XXX 4463-XXX 4463-XXX XXX 4463-XXX XXX C / F C / F Weight (lbs. with handwheel) C / F C / F *Chain Length (XXX) = 000 through 999 ft. (Chain ordered separately) C/F = Consult Factory Valve Size Gear Ratio Turns/90º Rotation Maximum Input Torque 2" 6" 30: ft.-lbs. 8" 12" 48: ft.-lbs. 14" 16" 48: ft.-lbs. 18" 20" 57:1 14-1/4 98 ft.-lbs. 24" 60: ft.-lbs. 30" 316: ft.-lbs. 36" 240: ft.-lbs. 42" 360: ft.-lbs. 48" C/F C/F C/F p29

32 W E A T H E R P R O O F G E A R O P E R A T O R S Optional Handwheel 2" through 24" Valves 2" 24" Valves Optional Square Nut Optional Chainwheel Valves with chainwheels should be installed upside down as noted to ensure pipe clearance and allow visual contact with the position indicator. Dimensional Data (inches) Valve Size 2" 6"* 8" 10" 12" 14" 16" 18" 20" 24" 30" 36" 42" 48" A B C D E F G H J K L M M1 N P R S T U V C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F = Consult Factory. *DT-1 Gear operator dimensions became standard gear operator midyear 2000 (for old style DT-3, consult factory). p30

33 DR SERIES P ISTON A CTUATORS Demco Series DR Piston Actuators consist of two opposed pistons with integral gear racks which are coupled to a common central drive shaft to produce rotary motion. In the basic unit, the Body, Pistons and End Caps are aluminum; the Central Drive Shaft is hard anodized, high performance Aluminum Alloy The Fasteners are plated steel; the Seals are Buna-N. All units are totally enclosed and use gaskets for weatherproof operation. Carbon filled teflon guide bands support the pistons to eliminate metal-to-metal contact during actuator operation. As a result, piston o-rings designed for sealing are not required to perform bearing functions. Mounting the actuator to the valve for many popular sizes is direct, requiring only a splined, aluminum stem adapter. Other sizes may require the addition of an aluminum adapter plate, but still make a closed coupled unit. Some sizes (mostly the larger valves) will require the traditional steel brackets/coupling mounting kit. Double Acting Actuator for NE-C, NE-I, NE-D and NF-C Butterfly Valves Assembly Part Number J XX X X Actuator Orientation Open Consult the factory for complete data sheets showing mounting configurations. Flatted stems are standard on 2"-12" Butterfly Valves (NE-C, NE-I, NE-D), whereas 14"-48" NF-C utilize a keyed stem. Series DR Actuators are available as Double-Acting or Spring Return. Double-Acting is the most economical, requiring either air or hydraulic pressure for opening and closing (fail last position). Spring-Return Actuators use compression spring(s) to move valve in one direction, while air pressure moves it in the opposite direction. Spring Return Actuators are used when valves must move to a predetermined position upon air supply failure (fail open or fail closed). Remove indicator for access to manual override wrench flats Actuator Torque Output (in-lb), Double Acting Actuator Supply Pressure (psi) Model EDA EDA EDA Actuator Size EDA EDA EDA EDA EDA PDA PDA PDA PDA PDA Orientation See drawing 0 See drawing 3 Valve Size 2"- 4" 1 5" & 6" 2 8" 3 10" 4 12" 5 14" 6 16" 7 18" 8 0 Orientation 0 Butterfly Valve Torques (except Series NE I-T)** Normal Wet Opening EDA EDA EDA EDA EDA PDA PDA Consult factory for complete data sheets with dimensional information. Valve Size 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30" 36" 42" 48" 285 psi Shut Off psi Shut Off psi Shut Off psi Shut Off Throttling* Butterfly Valve Torques (except Series NE I-T)** Three-Way Assemblies Valve Size 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30" 36" 42" 48" 285 psi Shut Off psi Shut Off psi Shut Off psi Shut Off Throttling* * When line velocity exceeds 15 feet per second, dynamic torque exceeds opening torque. ** For Series NEI-T Butterfly Valve torque requirement, consult factory. Close 3 Orientation 3 p31

34 DR SERIES P ISTON A CTUATORS Spring Return Actuator ESA 500 through ESA 6 for NE-C, NE-I, NE-D and NF-C Butterfly Valves Assembly Part Number J X XX X X Actuator Orientation Open Close Springs* Actuator Size Orientation Valve Size Spring Set 2 2 ESA See drawing 0 2"- 4" 1 Spring Set 3 3 ESA See drawing 3 5" & 6" 2 Spring Set 4 4 Spring Set 5 5 (Standard) Spring Set 6 6 * Select from Torque Chart ESA ESA ESA ESA ** ESA ** ESA ** 8" 3 10" 4 12" 5 14" Orientation 0 Spring Close (Stroke C & F) Orientation 3 Spring Open (Stroke D & E) Actuator Torque Output (In.-Lb.) Actuator Model ESA40 ESA65 ESA100 ESA200 ESA350 D E CCW Pressure on Port "A" Rotates shaft CCW. Spring Set No. A Air Stroke Supply Pressure (psi) Spring Stroke C D C D C D C D C D E F * Consult factory for complete data sheets with dimensional information ** See page 33 for Actuator Torque Output for models ESA 600, 950, and C CW -0.5 F The actuator shaft is shown rotated B (Breather) Start C NOTE: This graphic for ESA series only. Air Stroke D End 0 90 Rotation Counterclockwise Spring Stroke E Start Spring Set #2 Mid Spring Only F End 0 90 Rotation Clockwise NOTE: This graphic also applies to models ESA 600, 900, and 1600 (torque values on page 33). Spring Set Arrangement Spring Set #4 Inner Spring Outer Spring Spring Set #3 Outer Spring Only Spring Set #5 Mid Spring Outer Spring Spring Set #6 Inner Spring Mid Spring Outer Spring p32

35 DR SERIES P ISTON A CTUATORS Spring Return Actuator PSA 500 through PSA 4004 for NE-C, NE-I, NE-D and NF-C Butterfly Valves Assembly Part Number J X XX X X Actuator Orientation Open Close No. of Springs* Actuator Size Orientation Valve Size 8 Springs See drawing 0 4" 1 10 Springs See drawing 3 5" & 6" 2 12 Springs " 3 14 Springs (Standard) " 4 12" 5 * Select from Torque Chart " 6 16" 7 18"- 24" 8 Orientation 0 Spring Close (Stroke C & F) Orientation 3 Spring Open (Stroke D & E) Actuator Torque Output (In.-Lb.), Spring Return Air Stroke Supply Pressure (psi) Spring Actuator Spring Stroke Model Set No. C D C D C D C D C D E F ESA600** ESA950** ESA1600** PSA PSA PSA * Consult factory for complete data sheets with dimensional information D E CCW Pressure on Port "A" Rotates shaft CCW. A C CW -0.5 F The actuator shaft is shown rotated B (Breather) NOTE: This graphic for PSA series only** Start C Air Stroke D End 0 90 Rotation Counterclockwise Spring Stroke E Start 0 90 Rotation Clockwise ** See page 32 for assembly part number and actuator graphic for the ESA 600, 900, and F End Spring Arrangement 8 Springs 10 Springs 12 Springs 14 Springs p33

36 DR SERIES P ISTON A CTUATOR A CCESSORIES Position Indicator Switches * Position Indicator Switches are available to provide an electrical contact closure at open and closed positions, normally used for On- Off service. Independently adjustable SPDT switch elements are arranged so that each end of the valve travel is indicated by separate circuit closures. Positioners * Pneumatic positioners are offered for modulating service. The standard signal range is 3-15 psi, and may be generated by temperature, pressure or level controllers. Solenoid Valves * Solenoid Valves are used to direct supply air to the actuator to open and close the butterfly valve at the command of an on/off electrical signal. Direct attachment to the actuator through a manifold eliminates all external piping. Pressure connections are 1/4 NPT. Standard voltage is 120 VAC; other voltages are available on special order. NEMA 4 OPEN CLOSED CLOSED OPEN A O S E D B OP Position Indicator Switch Optional Gage Block weatherproof or NEMA 7 explosion-proof enclosures are available. Solenoid valves are available as 3-way valves for spring return actuators or 4-way for double acting actuators. Four-way solenoids are equipped with a push button manual override. Exhaust metering valves are available to control opening and closing speed of the butterfly valve. Declutchable Manual Worm Gear Overrides 3-Way Solenoid Valve Declutchable Manual Worm Gear Overrides are available for size 40 through 4004 DR actuators. Especially applicable to spring return actuators, the handwheel can be engaged with a special declutch lever to hold the valve in its last position until the actuator is returned to automatic operation. Series DR Actuator Seal Kit Seal Kits consist of all rubber seals, bushings and guide bands required to repair either double acting or spring return actuators. Handwheel Declutch Lever 4-Way Solenoid Valve Manual Override Series DR Actuator Accessory Part Numbers Actuator Size E40 through E350 P500 through P4004 Valve Position Indicator Switch Assembly 2-SPDT. Aluminum housing meets Nema 4, 6, 7, 8 & 9 Solenoid Valves for Double Acting Actuators Solenoid Valves for Spring Return Actuators Exhaust Metering Valves for Double Acting Actuators with Solenoid Valve Speed Control Valve Assembly for Spring Return Actuators without Solenoid Valve Speed Control Valve Assembly for Spring Return Actuators with Solenoid Valve Positioner Assembly, Pneumatic for Double Acting Actuators 3 psi Close, 15 psi Open Positioner Assembly, Pneumatic for Spring Return Actuators 3 psi Close, 15 psi Open Positioner Assembly, Electro Pneumatic for Double Acting Actuators 4 MaDC Close, 20 MaDC Open Positioner Assembly, Electro Pneumatic for Spring Return Actuators 4 MaDC Close, 20 MaDC Open (NEMA VAC) (NEMA VAC) (NEMA VAC) (NEMA VAC) (2 Required) (Orientation 0) (Orientation 0) (Orientation 3) (Orientation 3) (Orientation 0) (Orientation 0) (Orientation 3) (Orientation 3) (Orientation 0) (Orientation 0) (Orientation 3) (Orientation 3) (Orientation 0) (Orientation 0) (Orientation 3) (Orientation 3) Seal Repair Kit Model No. Part No. E40 E65 E100 E200 E350 P500 P750 P1100 P2500 P Note: Declutchable manual override and dual stroke adjustment available for all actuators. Consult factory for pricing. * Series DR Actuator auxiliary interface complies with NAMUR. Consult factory for complete data sheets with dimensional information p34

37 E LECTRIC A CTUATORS Electric Actuators Electric Actuators are particularly suitable for installation in remote locations not provided with a pressurized air source. Electric Actuators are fail in last position, and generally not available as fail-safe. Electric Actuators are powered by a rugged high-torque, integral reversible motor rated for 50% duty cycle. All models feature Manual Override Model Manual Override Model Size 25 through 800 Size 1600 and 4000 a disengageable manual override. Travel limit switches are set at the factory for open and closed valve positions, and they can also be used for end-of-travel light indication. Every unit has a built-in thermal overload protector, an easily accessible, clearly Manual Override marked terminal strip, a visual output shaft position indicator, permanent lubrication, and can be mounted and run in position. Electric Actuator Part Number (order mounting assembly as separate part number, see table below) XXXXX - X X XX X X X Voltage 120 VAC/1 Ph (1) VAC/1 Ph (1) VAC/3 Ph w/o Rev. Contactor (2) VAC/3 Ph w/ Rev. Contactor (2) VAC/3 Ph w/o Rev. Contactor (2) VAC/3 Ph w/o Rev. Contactor (2) 9 Model/Cycle Time (Sec.) 10/ / / / / / / / / / / / / / / / / / / / / / /8 62 Enclosure & Brake NEMA 4 with Brake 3 (AC Only) Feedback Potentiometer Ohm (1% Linearly) Heater/Thermostat 25 Watt Heater/ 1 70º Thermostat (3) None 9 Auxiliary Switches 15 amp/125 VAC (4) 2 SPDT (5) 2 4 SPDT 4 None 9 (4) Switches are independently adjustable (5) Standard on sizes 100 through 800 Size Number 10 through through NEMA 7 with Brake 4 (AC Only) (6) None 9 (1) 50% Duty Cycle (2) 25% Duty Cycle (3) Recommended for outdoors, high humidity, low temperature, or modulating (6) NEMA 7 models meet Classes I and II, Groups C-D-E-F and G requirements for hazardous locations. Output Torque, Electric Actuators (Pounds-Inches) (1) Cycle Time (In Seconds) Actuator Size Mounting Assemblies (2) Valve 2"- 4" Size 5"- 6" " " " " through 30" Consult Factory (1) Reduce torque output and increase cycle time 20% for 50 Hz operation 30 second minimum cycle time positioning service (2) Consult factory for complete data sheets with dimensional information p35

38 D IAPHRAGM A CTUATORS Spring Diaphragm Actuators* Spring Diaphragm Actuators have the characteristics of springreturn cylinders but are applicable to lower air supply pressures. The larger area of the diaphragm as compared to a cylinder provides greater force from the same supply pressure. Demco Series R diaphragm actuators for butterfly valves with drilled stems utilize a heavy-duty rack-and-pinion linkage to operate the valve. Diaphragms are made with steel case and diaphragm plates, Nylon-reinforced Buna-N diaphragm, 303 SS stem and Buna-N seals. Rack-and-pinion components are ductile iron or steel. Diaphragm Actuator Part Number XXXXX - X X X X X Actuator Orientation Base Number Service Air Pressure Orientation Valve Size From table below Pneumatic psi 1 20 psi "- 4" 1 5" - 6" 5 30 psi 3 8" 7 Diaphragm Size DMC-35 2 DMC-50 3 DMC-80 4 DMC-80A 5 40 psi 4 10" 8 12" 9 CCW Close Counter-clockwise 0 Open Counter-clockwise 1 CCW Close Counter-clockwise 2 Open Counter-clockwise 3 DMC-160A 7 DMC-160B 8 Diaphragm Actuator Assembly Part Numbers Size A 160A 160B Standard Actuator xxx xxx xxx xxx xxx xxx Series R Diaphragm Actuator Torque Output (Inch-Pounds) Supply Pressure, psi DMC-35 DMC-50 DMC-80 DMC-80A DMC-160A DMC-160B Series R Diaphragm Actuator Accessory Part Numbers Weatherproof Position Indicator Switch Assemblies Explosion Proof Position Indicator Switch Assemblies Positioner Filter Regulator Diaphragm Repair Kit NEMA 4 & 4x Mechanical Switch NEMA 4 & 4x Proximity Switch NEMA 4, 4x & 7 Mechanical Switch NEMA 4, 4x &7 Proximity Switch Note: Where a part number suffix contains an x (example: -xxx), the Assembly Part Number chart should be used to derive the desired option(s). * Consult factory for complete data sheets with dimensional information Without Visual Indicators With Visual Indicators 2-SPDT DPDT SPST SPDT SPDT DPDT SPST SPDT psi psi psi p36

39 S T E M E X T E N S I O N S, T E E S A N D A D A P T E R S Stem Extensions Fabricated from carbon steel or stainless steel, stem extensions are contained in a tubular housing. Lengths from 3 inches to 16 feet are fabricated to order. Torsional deflection of lengths over 16 feet requires special design consideration and is available by special order only. How to Order, 2" 12" How to Order, 14" 24"* X X X X X X X X X X X X X X X X 0 0 Base Part Number Length ( inches) Base Part Number Length ( inches) Description 2" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" Carbon Steel * Note: Consult factory for 30, 36", 42", 48" valve stem extensions. Flanged Tees for 3- way Butterfly Valve Assemblies How to Order, Series 125 Cast Iron Flanged Tee 5250 X X X Base Number Size 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" way Adapter for Valves 3-way adapter assemblies mechanically link two butterfly valves, to close one while opening the other, with a single actuator. Valves are commonly connected in this manner by assembling to a flanged tee for diverting service. 3-way adapters for valves may be used with piston, cylinder, diaphragm, or electric actuators, gear operators or manual handles. Orientation How to Order, 2" 12" X X X X X XX X Base Part Orientation Valve Size Number How to Order, 14" 20" XX X Base Part Orientation Valve Size Number Established at Order Entry See Diagram 2" 1 6" /2" 2 8" 7 3" 3 10" 8 See Diagram 14" 1 16" 2 18" 3 4" 4 12" 9 20" 4 5" 5 p37

40 G E N E R A L T E C H N I C A L I N F O R M A T I O N Pressure Rating Three drop tight pressure ratings are offered for Demco Butterfly Valves. Normally, 200 psi shutoff is used in butterfly applications. However, 285 psi shutoff is optionally available for higher pressure applications. For smaller actuator sizing, 50 psi valves offer reduced torque. For minimum torque, throttling valves, which do not provide drop tight closure, are available. Vacuum Rating Demco Butterfly Valves will seal against 10 microns of vacuum (29.9 inches of mercury). For reduced torque and extended seat life, 50 psi discs are recommended for the dry service conditions found in many vacuum applications. End-of-Line Service Lug body valves may be used in end-of-line service, with downstream piping removed. (Weld neck or socket flanges, only, can be used for this service.) Since upstream pressure is excluded between the flange and the seat face by the exclusive Demco flange seal, there is no effective force to slide the seat downstream. Demco Lug Butterfly Valves are recommended for liquid service up to 200 psi with downstream piping removed. Lug body valves are recommended for isolation of pumps, control devices or other system components which may need to be removed for repair or replacement. Lug valves are also suitable for installation at points from which piping expansions may proceed. Such valves are normally blanked with blind flanges, to protect the exposed seats, until new piping is attached. Lug valve connection with downstream flange removed Wafer valve connection Marking Each valve is positively identified by marking and tagging per MSS SP 25. Actuation Positive latch handles, worm gear operators and automatic actuators are available and totally interchangeable on the Demco valve. The Demco top flange is dimensionally compatible with other competitive butterfly valves. With optional utility top stem, the Demco valve interchanges directly with competitive valves, allowing valve replacement without the need for new actuation. Installation and Maintenance Demco Butterfly Valves are bi-directional, with identical flowway from either face. To install, simply close the valve, insert between flanges and make up with studs or cap screws. No regular maintenance or lubrication is ever required. Disassembly is simple, for inspection or replacement of parts. Open the valve, remove handle or actuator, remove tangential pins, pull out the stems and push the disc and seat out of the body. Reassemble in reverse order, with a small amount of general purpose non-hydrocarbon based lubricant on the outside of stems, seat and disc flats. Steel or cast iron flanges of either raised or flat-faced type are suitable for use with Demco Butterfly Valves. Plastic flanges are subject to damage at installation by over-tightening the bolting and may deflect or cup, resulting in flange leaks. Refer proposed plastic flange installations to Demco Valve Quotations Department for review and recommendation. Throttling discs, with no seat interference, do not provide a stem seal. Stem o-rings are provided for this application. Flange gaskets assist the o-rings in 2"-12" valves, and must be used with throttling discs, only. p38

41 G E N E R A L T E C H N I C A L I N F O R M A T I O N This nomograph gives corresponding values for the parameters of flow rate, valve size, disc angle and pressure drop of Demco Butterfly Valves in 1.0 specific gravity water service at 68 F. The shaded portion of the nomograph represents line velocities below 15 feet per second and is normally used for valve sizing in liquid applications. Butterfly Valves are economical throttling devices. Reliable throttling can be attained at disc openings from 25 to 70. Sample Computation for Water Water, with specific gravity of 1.0 and flow rate of 1200 gpm, through 6" Butterfly Valve. Required: Pressure drop at full and 75 disc opening. Project horizontally from 1200 gpm to 6" valve curve. Project vertically upward to full open valve curve, then horizontally to read 0.35 psi pressure drop. Continue upward projection to intersect 75 opening curve, then horizontally to read 0.8 psi pressure drop. Sample Computation for Air Air, with density of lbs./cu. ft., flow rate of 40,000 cu. ft./hr., through 5" Butterfly Valve. Required: Pressure drop through full open valve. Disregarding change in gas condition by pressure drop across valve, proceed from 40,000 cu. ft./hr., as in liquid computation, to read 15 psi pressure drop. Convert pressure drop from water to air by multiplying this value times the ratio of air-towater densities: 15 psi x = psi 62.4 To determine pressure drop for any fluid, multiply value obtained from the nomograph by the quotient of the fluid density, in pounds per cubic foot, divided by p39

42 G E N E R A L T E C H N I C A L I N F O R M A T I O N General Dimensions (inches), 2" 20" Dimension A Schedule 40 Flange ID F End-to- End Valve Size 2" 2 1 /2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" (Except Slip On) (Slip On) B Seal Diameter C Raised Face Diameter D Valve Body Diameter E Seat OD Threaded ANSI Socket & Slip On 3 3 /4 4 1 /8 4 1 /4 4 3 /4 5 1 /8 5 3 /8 6 1 / /8 7 5 /8 7 1 / / /16 Weld End, Lt. Wt. & ANSI 6 3 /4 7 3 /8 7 3 /8 8 1 /8 9 1 /4 9 1 / / / / / /16 Grooved 6 5 /8 7 3 / /8 7 7 / / / / / /16 Socket, Lt. Wt. 2 3 /4 2 7 /8 2 7 /8 3 1 /8 3 1 /4 3 1 /4 3 9 / /4 4 3 /4 4 1 /2 5 1 / / /16 G Seat ID 2 1 / / / / / / / / / / / /32 H Disc Chord*, Resilient Seated Valves J Outsideto-Outside Throughput Area ANSI Lt. Wt Resilient Seated-sq. in % Sch. 40 pipe 70% 82% 80% 79% 73% 76% 79% 78% 80% 82% 85% 83% 87% Number of Studs Number of Cap Screws Size of Studs or Cap Screws- Threads per in. 5 /8"-11 5 /8"-11 5 /8"-11 5 /8"-11 3 /4"-10 3 /4"-10 3 /4"-10 7 /8"-9 7 /8"-9 1"-8 1" /8" /8"-7 Length of Studs /2 5 1 /2 5 3 /4 6 1 /2 6 1 / /2 8 1 /4 8 1 / / /4 Length of Cap Screws 1 1 /2 1 1 /2 1 1 /2 1 3 /4 1 3 / /4 2 1 /4 2 1 /2 2 1 /2 3 1 /4 3 1 /2 4 Butterfly Valves are designed to seal without flange gaskets against flange faces with inside diameters between slip-on flange bore and Schedule 40 weld neck flange bore. *2" 12" disc will open into Schedule 80 pipe ID. General Dimensions (inches), 24" 48" Dimension Valve Size 24" 30" (1) 36" (1) 42" (1) 48" (1) A Standard Flange ID (Except Slip On) B Seal Diameter C Raised Face Diameter D Valve Body Diameter E Seat OD F End-to-End Weld End, ANSI G Seat ID 23 1 / / / / /16 H Disc Chord J Outside-to-Outside, ANSI Number of Studs 20 * ** Number of Cap Screws Size of Cap 1 1 /4" /4" /2"-6 Screws-Threads per in. Length of Studs 12 1 /2 * ** Length of Cap Screws Throughput sq. in Area % std. pipe 88% 81% 82% 81% 83% ** 24 Studs 1 1 / /2; 8 capscrews 1 1 / ** 28 Studs 1 1 /2-8 16; 8 capscrews 1 1 / Studs 1 1 /2-8 18; 8 capscrews 1 1 / Studs 1 1 / /2; 16 capscrews 1 1 / /4. (1) Dimensions are for ASME Class 150 Series A flanges. Consult factory for MSS SP-44 flanges. p40

43 G E N E R A L T E C H N I C A L I N F O R M A T I O N Flow Coefficients (Cv) Degree Open Valve Size 2" 2 1 /2" 3" 4" 5" 6" 8 10" 12" 14" 16" 18" 20" 24" 30" 36" ,125 1,950 3,250 5, ,000 13,600 18,000 22,600 30,000 47,000 70, ,000 1,650 2,725 4,300 6,050 8,100 11,500 14,300 18,000 25,000 38,000 60, ,350 2,200 3,600 5,000 6,700 9,500 12,100 15,000 21,000 31,500 48, ,030 1,750 2,750 4,050 5,100 7,100 9,200 11,500 16,500 25,500 39, ,300 2,150 3,100 4,100 5,100 7,100 8,700 11,750 18,000 28, ,150 1,600 2,200 2,650 3,700 4,600 6,100 9,700 15, ,000 1,300 1,700 2,300 2,800 3,800 6,000 9, ,250 1,600 2,200 3,500 5, ,125 1,500 2,300 3,500 Cv values, given above, may be employed in the formula: Q = C V x P x 62.4 D Where: Q = Gallons per minute of flow through the valve. P = Pounds per square inch pressure drop across the valve. D = Density of fluids in pounds per cubic foot. Pressure drop is computed by rearranging the formula to: Q 2 x D P = C 2 V x 62.4 Sample Computations What is the flow rate of water at ambient temperature through a 4" butterfly valve 70 open when pressure drop across the valve is 0.5 psi? (Density of water at 68 F is 62.4 pounds per cubic foot.) Q = C V x = 305 x P x 62.4 D 0.5 x 62.4 D = 305 x Q = gallons per minute What is the pressure drop across an 8" butterfly valve fully open, flowing 2000 gallons per minute of solvent with a density of 55 pounds per cubic foot? Water Hammer Water hammer is a series of shocks in a piping system caused by rapidly stopping the flow of fluid in that system. Although it is difficult to measure pressure spikes caused by water hammer shock with ordinary equipment, maximum obtainable pressures caused by instantaneous valve closure can be approximated by the following formula: Pressure (max) = Interrupted velocity (fps) 58 psi/fps In other words, pressure increases 58 psi for each foot per second of interrupted pipe line velocity. A pipe carrying fluid at 15 feet per second velocity will have an instantaneous pressure increase of 870 psi under rapid closure conditions. The effects of water hammer are seen in a butterfly valve as bent disc and stems, broken bodies or both. Water hammer can be minimized or eliminated by slowing valve closure time in accordance with the following formula: Where: Q = Flow in gpm. Time seconds = S = Upstream pipe size in sq. ft Q S (P) P = Pressure rating of the valve in psi. Generally, a closing time of 6 to 8 seconds is sufficient to eliminate water hammer. P = Q 2 x D C 2 V x 62.4 = (2000) 2 x 55 (3250) 2 x 62.4 P = 0.33 pounds per square inch p41

44 G E N E R A L T E C H N I C A L I N F O R M A T I O N Cavitation Data Liquid flow is accelerated as it passes through a valve in such a manner that pressure is decreased below the vapor pressure and bubbles form. Immediately downstream of the valve, velocity decreases while pressure increases and the bubbles collapse causing noise and possible mechanical damage to the valve and piping. This is called cavitation. Cavitation can often be identified by the noise of the collapsing bubbles which sounds like gravel flowing in the pipe. Generally butterfly valves operate with high flow capacities and at low pressure differentials and are not particularly susceptible to cavitation. When butterfly valves are used as control valves, one can assure that cavitation will not occur by applying the following simplified formula: Where: Pmax = K C (P 1 P V ) Pmax = Differential pressure across the valve. K C = Cavitation constant (approximately.35 for butterfly valves). P 1 = Inlet pressure (PSIA). P V = Vapor pressure of the flowing liquid (PSIA). output must meet or exceed the maximum torque requirement of the valve. Normal Wet Opening Torque requirements due to interference are tabulated below. Dry service will increase opening torque significantly. Consult factory for dry service torque requirements. The disc of a butterfly valve, in partially opened condition, is subject to lift forces from passage of fluid over its surfaces. This effect is analogous to an airplane wing and results in an unbalanced turning force on the disc. Dynamic torque is proportional to pressure drop through the valve and may become significant in some applications. Dynamic torque typically is a maximum at about 70 disc opening. Under high differential pressure conditions, such torque may exceed the design strength of stems, connections or actuators. The curves at right may be used to calculate dynamic torque for Demco Butterfly Valves and should be consulted in any case where high differential pressure may occur during operation of a valve. Example: What is the maximum pressure drop possible through a butterfly valve at 100 PSIG inlet pressure with water at 68 F (.339 PSIA vapor pressure)? Pmax =.35 ( ) = psi Under the above conditions it is possible to take a psi pressure drop across the valve before cavitation will begin. Torque The torque (turning effort) required to operate a given butterfly valve is determined by two factors: friction of disc and seat due to interference, and dynamic forces of flow through the valve which tend to open or close the valve. Actuator torque Normal Wet Opening Torque of Resilient Seated Butterfly Valves (In-Lbs)** Valve Size Description / psi Shutoff psi Shutoff psi shutoff Throttling* ** When line velocity exceeds 15 fps, dynamic torque will exceed tabulated torque for throttling valves. ** Consult factory for dry torques. 14" 24": 250 psi shutoff (14"-24": 250PSI consult factory). 14" 24": 150 psi shutoff; 30" 36": 150 psi shutoff. p42