INTRODUCTION TO THERMOPLASTIC VALVES INCORPORATED

Transcription

1 INDEX INTRODUCTION PAGE DESCRIPTION OF THERMOPLASTIC AND ELASTOMERIC MATERIALS ,2 RESINS USED IN MANUFACTURING PHYSICAL PROPERTIES OF PVC, CPVC, PP AND PVDF CODE REFERENCE DATA PIPE STANDARD TEMPERATURE/PRESSURE GUIDELINES Cv VALUES TORQUES WEIGHTS INSTALLATION INSTRUCTIONS OPERATING & MAINTENANCE GUIDE ,12 TROUBLE SHOOTING ,14 VALVE SUBMITTAL DRAWINGS/SPECIFICATIONS BALL CHECKS ,16,16A,16B BUTTERFLYS ,18,19,20, 20A, 20B COMPACT BALL VALVES ,22 DIAPHRAGM VALVES, TRUE UNION AND FLANGED ,24,25,26 HORIZONTAL SWING CHECK ,28 TRUE UNION SAFETY BLOCK ,30, 30A, 30B, 30C, 30D STRONG UNION/FLANGED BALL VALVE ,32 Y-STRAINER ,34 3-WAY POOL AND SPA VALVE ,36 COMPRESSION COUPLING A, 36B CHEMICAL RESISTANCE CHART ACCESSORIES/OPTIONS ADDITIONAL INFORMATION SHEET SALES CATALOG

2 INTRODUCTION TO THERMOPLASTIC VALVES INCORPORATED The TVI thermoplastic valve line is manufactured by one of the largest plastic valve manufacturers in the world. Thirty years of valve designing and injection molding experience, have earned them the reputation of a quality manufacturer of thermoplastic valves. The manufacturing facilities include, two production sites totaling 250,000 square feet, 32 injection molding machines, six assembly lines employing more than 180 people. The product is exported to 39 countries throughout the world. The factory maintains stringent quality control standards carried out during the complete manufacturing process; including a 100% valve testing program performed on every valve. The company's ball valve design and manufacturing process has the NSF (National Sanitation Foundation) approval and they are ISO9002 approved. For the past fifteen years, TVI has been the sole master distributor for their complete diversified thermoplastic valve line. TVI has ten regional sales engineers along with stocking distributors throughout the United States, parts of Canada, Mexico, the Caribbean and South America. We are extremely proud of our working relationship with our manufacturer. TVI services industries that require complete resistance to corrosion, galvanic corrosion (electrically non-conductive) and contamination in both metal and plastic piping systems. These industries include but are not limited to: water filtration, water purification, waste water filtration, de-ionized water, agriculture, including irrigation, fertilization and pesticide applications, aqua-culture, mining, pharmaceutical, chemical processing, swimming pools and spas, aquariums, the photographic industry, metal finishing, food processing, paper processing, petro chemical, fluid circulation systems and finally original equipment manufactured products (OEM accounts). TVI's commitment to the areas we serve is equal to or surpasses that of our competitors. In addition to our outstanding service policy our valves carry a full warranty against defects in material and/or workmanship under use and service for a period of one year from date of shipment.

3 THERMOPLASTICS AND ELASTOMERS ABS ACRYLONITRILE - BUTADIENE - STYRENE - Class conforming to ASTM D Temperature range from -40 degrees F to 180 degrees F. Excellent resistance to deposit formation. Superior resistance to sewage and common chemical formulations. Good impact resistance (many automotive parts, bumpers and panels). ABS can be joined by cementing, threading and flanging. PVC CPVC PP PVDF EPDM POLYVINYL CHLORIDE - Class B Type 1, Grade 1 to ASTM Temperature range from -30 degrees F to 140 degrees F. PVC is the most common and most widely used thermoplastic material. It resists most acids, strong Alkalis, salts and paraffinic hydrocarbon solutions. Excellent for industrial chemical and plating systems, deionized water, irrigation and drainage systems. PVC is not recommended for use with chlorinated or aromatic hydrocarbons, esters or polar solvents such as ketones. The material can be joined by cementing, threading or flanging. CHLORINATED POLYVINYL CHLORIDE - Class B Type IV Grade 1 to ASTM D The physical properties at 73 degrees F are very similar to PVC. CPVC has a slightly better chemical resistance and has a higher temperature range to 210 degrees F. It is not recommended for use with chlorinated or aromatic hydrocarbons, esters or polar solvents such as ketones. The material can be joined by cementing, threading or flanging. POLYPROPYLENE - Type 1 to ASTM D-4101 class PP10-B Temperature range from -30 F (degrees F) to maximum 180 F (degrees F) but at this temperature we recommend it's use only with water or drainage. PP is the lightest of all plastics. Resistant to organic solvents, acids and alkalies. It is not recommended for oxidizing acids, chlorinated hydrocarbons or aromatics. Mostly used for sulfur-bearing materials, saltwater solutions, crude oil and low pressure gas systems. PP can be joined by thermoseal fusion, threading or flanging. POLYVINYLIDENE FLUORIDE - ASTM D-3222 having a temperature range of -80 degrees F to 280 degrees F. The strongest, heaviest and most abrasion resistant of the thermoplastic materials. PVDF is resistant to most acids, bases and organic solvents and is the only thermoplastic resistant to wet or dry chlorine, bromine and other halogens. PVDF can be joined by thermo-seal fusion, threading or flanging. A terpolymer elastomer made from ethylene-propylene diene monomer. Recommended for water, chlorinated water, dilute acids, alkalines, alcohols and ozone. Not recommended for petroleum oils, strong acids and alkalines. EPDM has a temperature range from -20 degrees F to 230 degrees F. 1

4 VITON NITRILE HYPALON NEOPRENE TEFLON FLUOROCARBON ELASTOMER - Recommended for hydrocarbon service, mineral acids, salt solutions, chlorinated hydrocarbons and petroleum oils. Viton has the broadest temperature range of the elastomers from -20 degrees F to 300 degrees F but should not be used in steam service. (BUNA-N) - A copolymer of butadiene and acrylonitrile. Has good resistance to solvents, petroleum oils and fluids, di-ester lubricants, ethylene glycol based fluids, aliphatic hydrocarbons and aromatic solvents. It should not be used with acetone and methyl ethyl ketone, chlorinated hydrocarbons, ozone or nitro hydrocarbons. Temperature range from -20 degrees F to 180 degrees F. A chlorosulfonated polyethylene elastomer and has good resistance against nitric, hydrofluoric and sulfuric acids, aliphatic hydrocarbons and aromatic solvents. It is not recommended for exposure to concentrations oxidizing acids, esters, ketones, chlorinated, aromatic and nitro hydrocarbons. Temperature range from -20 degrees to 200 degrees F. A chlorinated synthetic rubber elastomer. It is flame resistant and resists animal and vegetable oils. Recommended for food and beverage service. Normally not effected by moderate chemicals, fats, greases and many oils and solvents. Neoprene is not recommended for strong oxidizing acids, esters, ketones, hydraulic fluids, chlorinated solvents and aromatic hydrocarbons. Temperature range from -20 degrees F to 160 degrees F. POLYTETRAFLUOROETHYLENE - A self lubricating compound. Resistant to almost all chemicals and solvents and has a very high thermal- stability, also nonflammable. Temperature range of -20 degrees F to 400 degrees F. VITON, HYPALON & TEFLON are registered trademarks of DuPont Dow. 2

5 RESINS USED IN THE MANUFACTURING OF "TVI" THERMOPLASTIC VALVES A. PVC RESIN Type 1, Grade 1, N.S.F. registered, GEON with PVC compounds - gray 272 and white 124 and tin stabilized as manufactured by B.F. Goodrich Chemical Group (U.S.A.) B. CPVC RESIN Temprite Grade CPVC as manufactured by the B.F. Goodrich Chemical Group (U.S.A.) C. PP RESIN Resin as manufactured by Chisso-Tokuyama (Japan) D. PVDF RESIN Solef Resin as manufactured by the Solvay Company of Belgium is being used. Upon request: Physical property & material guides are available. 3

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7 PHYSICAL PROPERTIES OF PVC, CPVC, PP & PVDF TEST PROPERTIES PVC CPVC PP PVDF METHOD REF. COEFFICIENT OF EXPANSION, IN./IN./ FX ASTM - D696 COMPRESSIVE MODULUS, 10 3 PSI ASTM - D695 COMPRESSIVE STRENGTH, PSI 12,500-14,000 14,000-15, ,500-14,000 ASTM - D695 DIELECTRIC STRENGTH, KV/IN ASTM - D149 ELONGATION, % ASTM - D638 HARDNESS, ROCKWELL R ASTM - D785 HEAT DEFLECTION, 264 PSI ASTM - D648 HEAT RESISTANCE, F IZOD IMPACT, FT. LBS./IN., V NOTCH ASTM - D256 SPECIFIC GRAVITY ASTM - D792 TENSILE STRENGTH PSI ASTM - D638 WATER ABSORPTION 24HR/ % a 73 DEG. F ASTM - D570 CODE REFERENCE DATA ASTM - D1784 RIGID PVC & CPVC ASTM - D2855 PVC SOLVENT COMPOUNDS CEMENTED JOINTS D1785 PVC SCHED. 40 & 80 PIPE SPECS. F CPVC SCHED. 80 SOCKET FITTINGS D2464 PVC SCHED. 80 THREADED FITTINGS F-441 CPVC SCHED. 80 PIPE SPECIFICATIONS D2466 PVC SCHED. 40 SOCKET SPECS. F-493 CPVC SOLVENT CEMENTS D2467 PVC SCHED. 80 SOCKET SPECS. ANSI B16.1 FLANGE SPECIFICATIONS D2564 PVC SOLVENT CEMENTS B2.1 THREADED FITTINGS & PIPE SPECS. NSF 14 POTABLE WATER & QUALITY CONTROL STANDARDS SCHEDULE 80 THERMOPLASTIC PIPE STANDARDS NOMINAL INSIDE OUTSIDE WALL PIPE SIZE DIAMETER (IN.) DIAMETER (IN.) THICKNESS (IN.) 1/2" /4" " /4" /2" " /2" " " " " "

8 PRESSURE (PSI) - TEMPERATURE ( F) GUIDELINES The maximum pressure rating of any TVI Thermoplastic Valve is 150 F - water, nonshock. With temperature increase, the pressure capability of each type valve and size must be derated as charted below. Ball Valves: Compact Style, True Union, Econo-Pro. Ball Check & Foot Valves, Gauge Valves TEMPERATURE ( F) Butterfly Valves BODY DISC TEMP. ( F) 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" PVC PP PVDF PVDF TEMP ( F) Horizontal Swing Check Valves SIZE PVC PP PVDF EPDM TEFLON EPDM TEFLON EPDM TEFLON /4" " /2" " /2" " " " " " Diaphragm Valves VALVE RUBBER 73 F TEFLON 73 F SIZE PVC PP PPG CPVC PVDF PVC PP PPG CPVC PVDF 1/2" /4" " /2" " /2" " " " " " " NOTE: TEFLON IS A REGISTERED TRADEMARK OF DUPONT DOW ELASTOMERS 6

9 CV VALUES OF TVI VALVES TYPE & SAFETY BLOCK T.U. & BUTTERFLY SWING BALL Y DIAPHRAGM VALVES SIZE COMPACT BALL VALVES CHECK CHECK SEDIMENT 1/2" - 2" T.U. STYLE VALVES 1/2"-2" VALVES VALVES STRAINERS 2 1/2"-10" FLANGED 6" STRONG UNION 1PC. BODY STYLE 1/2" /4" " /4" /2" " /2" " " " " " " " " " " " " Cv value is the number of U.S. GPM of water at 73 degrees F that pass through the fully open valve at a pressure drop of 1 PSI. 7

10 THERMOPLASTIC VALVES, INC. TORQUE INFORMATION/TORQUE REQUIRED IN INCH POUNDS INCLUDING 30% SAFETY FACTOR SIZE 150 PSI 100 PSI 50 PSI BUTTERFLY VALVES 2" /2" " " " " " " " " " 88 PSI " 74 PSI 11, " " 11,000 TUSB BALL VALVES 1/2" /4" " /4" /2" " /2" " " DIAPHRAGM TU VALVES 1/2" /4" " /2" " DIAPHRAGM FLG. BODY VALVES 1' 78 2" 98 3" 135 4" 325 6" " 60PSI " 60PSI 560 8

11 THERMOPLASTIC VALVES, INC. WEIGHTS IN POUNDS & OUNCES (EST. SHIPPING WEIGHT) PVC WEIGHTS ONLY TYPE SIZE EACH CARTON (LOT) BC 1/2" SOC./THD (50) BC 1/2" FLANGED 0.6 BC 3/4" SOC./THD (40) BC 3/4" FLANGED 1.0 BC 1" SOC. /THD (20) BC 1" FLANGED 1.4 BC 1 1/4" SOC./THD (12) BC 1 1/4" FLANGED 2.0 BC 1 1/2" SOC./THD (12) BC 1 1/2" FLANGED 2.4 BC 2" SOC./THD (12) BC 2" FLANGED 4.0 BC 2 1/2" SOC./THD (4) BC 2 1/2" FLANGED 9.2 BC 3"SOC./THD (4) BC 3" FLANGED 15.6 BC 4"SOC./THD (2) BC 4" FLANGED 21.4 BC 6 FLANGED (1) BC 10 FLANGED (1) BF 2 LEVER (12) BF 2 1/2 LEVER (12) BF 3 LEVER (12) BF 4 LEVER (6) BF 5 LEVER (4) BF 6" LEVER (4) BF 8"LEVER (2) BF 8" GEAR (1) BF 10"GEAR (1) BF 12" GEAR (1) BF 14" GEAR CRATE (1) BF 16"GEAR CRATE 130.0(1) BF 18" GEAR CRATE (1) BF 20" GEAR CRATE (1) BF 24"GEAR CRATE (1) UBF 2 LEVER (1) UBF 3 LEVER (6) UBF 4 LEVER (3) UBF 6 LEVER (2) UBF 8 LEVER (1) CB 1/2" SOC./THD (120) CB 3/4" SOC./THD (90) CB 1"SOC./THD (60) CB 1 1/4" SOC./THD (40) CB 1 1/2" SOC./THD (30) CB 2" SOC./THD (18) CB 3 SOC./THD (6) CB 4 SOC./THD (4) BC = BALL CHECK BF = BUTTERFLY VALVE CB = COMPACT BALL VALVE TUDV = TRUE UNION DIAPHRAGM DV = FLANGED DIAPHRAGM HS = HORIZONTAL SWING CHECK PV = POOL VALVE SB = SAFTEY BLOCK BALL VALVE UB = UNIV. BFV YS = Y-STRAINER TYPE SIZE EACH CARTON (LOT) TUDV 1/2" SOC./THD (12) TUDV 1/2" FLANGED 1.8 TUDV 3/4" SOC./THD (12) TUDV 3/4" FLANGED 1.8 TUDV 1 SOC./THD (12) TUDV 1 FLANGED 2.6 TUDV 1 1/2 SOC./THD (6) TUDV 1 1/2 FLANGED 5.2 TUDV 2" SOC./THD (6) TUDV 2" FLANGED 8.4 DV 2" MLD. BODY FLG (1) DV 3" MLD. BODY FLG (1) DV 4" MLD. BODY FLG (1) DV 6" MLD. BODY FLG (1) CRATE DV 8" MLD. BODY FLG (1) CRATE DV 10" MLD. BODY FLG (1) CRATE HS 3/4" 4.0 (1) HS 1" 4.2 (1) HS 1 1/2" 6.2 (1) HS 2" 8.8 (1) HS 2 1/2" 8.8 (1) HS 3" 9.2 (1) HS 4" 16.2 (1) HS 6" 34.8 (1) HS 8" 52.2 (1) PV 2" SOC. (3 WAY) (12) SB 1/2" SOC./THD (48) SB 1/2" FLANGED 1.0 SB 3/4" SOC./THD (36) SB 3/4" FLANGED 1.6 SB 1" SOC./THD (36) SB 1" FLANGED 2.0 SB 1 1/4" SOC./THD (12) SB 1 1/4" FLANGED 4.2 SB 1 1/2" SOC./THD (12) SB 1 1/2" FLANGED 4.2 SB 2" SOC./THD (12) SB 2" FLANGED SB 2 1/2" SOC./THD (4) SB 2 1/2" FLANGED 9.6 SB 3" SOC./THD (2) SB 3" FLANGED 16.4 SB 4"SOC./THD (1) SB 4" FLANGED 22.6 SB 6" STRONG UNION FLG (1) SB 4-6" VENT. SOC SB 4-6" VENT. FLG YS 1/2" SOC./THD. 0.4 YS 3/4" SOC./THD. 0.8 YS 1" SOC./THD. 1.2 YS 1 1/4" SOC./THD. 2.2 YS 1 1/2" SOC./THD. 2.6 YS 2" SOC./THD

12 THERMOPLASTIC VALVE INSTALLATION INSTRUCTIONS VALVE STORAGE Thermoplastic valves should be stored indoors at ambient temperature in their original containers to keep them clean to avoid damage and elastomeric deterioration. END CONNECTIONS SOCKET: Provides a stronger connection than threading and is preferred in permanent installations. Socket dimensions are in conformance with ASTM D2467. SOLVENT CEMENTED: Compatible with PVC and CPVC Valves, using normal solvent cementing techniques. Caution should be taken that cement does not get on the inside face of the end connection or inside the valve. Refer to cement manufacturer's guidelines for bonding temperature limitations and recommended cementing cure times. NOTE: Shelf life of solvent cement is limited to the time advised by the manufacturer. That is approximately one year for CPVC and two years for PVC. SOCKET FUSION (THERMAL BONDING): The superb resistance of PVDF and PP to organic solvents, including solvent cements make it necessary to join those socket connections, in 1/2" thru 4" sizes, by thermal bonding technique. BUTT FUSION (THERMAL BONDING): A heat fusion technique necessary for joining PVDF and PP butt end connections to similar material piping. THREADED: Preferred when occasional disconnecting of piping system is necessary, but limited to a maximum of 4 inches in diameter. Thermoplastic pipe of Schedule 80 or heavier should be used because threading reduces the effective wall thickness, resulting in a reduction in pressure rating to one-half that of solvent cemented or thermal bonded socket connections. Threads are American Standard Tapered Pipe Threads per ANSI B2.1. Preparation for assembly consists of wrapping the pipe threads with Teflon (TFE) tape, starting with the second thread from the end and wrapping in the direction of threads, with a slight overlap. After a hand-tight assembly, an additional 1/2 to 1-1/2 turns with a strap wrench will complete the connection. Care must be taken to not overtighten, which can cause distortion or even failure of threads. FLANGED: Manufactured to ANSI B16.5, (150lb. class). Available in most all sizes and most widely used throughout the industry for process sytems that require occasional dismantling. Thermoplastic flanges may be connected to pipe or fitting by the method required by the individual material. A full flat face elastomeric gasket seal of a 50 to 70 durometer hardness, is required between flanges, with the exception of Butterfly Valves in which the outer face of the seal acts as the gasket. FLANGE SIZE (IN.) RECOMMENDED TORQUE (FT. LBS.)* JOINING FLANGES: 1. Carefully observe for proper alignment of bolt holes, and also for parallelity and closeness of mating flanges. 2. Position gasket seal. Then insert and lubricate all bolts, using flat washers under bolt heads and nuts. 3. With a wrench on bolt head, tighten each nut with a torque wrench in a pattern, diametrically opposite each other, as shown below. Do this in increments until finally reaching the torque values charted at right. VALVE ADJUSTMENTS AND INSTALLATION GUIDE * For a well lubricated bolt. recommended COUPLING NUTS: On all true union style valves when installing into pipe line, nuts should be tightened by hand. It is not recommended to use pipe or strap wrench. SAFTEY BLOCK TRUE UNION BALL VALVES: Adjustment for ball to seat tightness: (a) Sizes 1/2 thru 4 - Remove coupling nut on adjusting end of valve. Use valve handle on threaded cartridge and turn 20 clockwise. Replace coupling nut hand tight. (b) Sizes 3 and 4 - It is only necessary to tighten the adjustment end coupling nut. Do not over-tighten or handle will not turn valve from open to close position. BALL CHECK VALVE: No adjustment is required other than making certain that the union nuts are tight. Install in line with the flow arrow in the same direction as the fluid flow. Caution should be taken not to install a Ball Check too close to a discharge pump. The resulting turbulent fluid flow may cause ball chatter and internal valve damage. BUTTERFLY VALVE: Always install between two pipe flanges, and never with a gasket seal. The outer rim of the elastomeric valve seal acts as the gasket seal. DIAPHRAGM VALVE: Installation: 1. Refer to section " Joining Flanges" and follow written procedures. 2. Sizes 3" and larger have a bonnet grease fitting. Lubricate before placing valve in service. 3. Use torque wrench, follow same recommended torques shown for flange bolt connections and tighten body/bonnet bolting. 4. Full open flow setting has been set at factory before factory pressure testing. Maintenance: 1. The TVI thermoplastic diaphragm valves require no maintenace other than periodic grease fitting lubrication. 1/2"-1 1/2" TIGHTENING PATTERN FOR FLANGE BOLTS

13 OPERATING & MAINTENANCE GUIDE FOR TVI VALVES SAFETY BLOCK TRUE UNION BALL VALVES OPERATING: MAINTENANCE: ADJUSTMENT: Manual handle control, arrow on top of handle gives direction for open and close positions. The valve requires no maintenance. If seat or surface of ball wears, due to abrasion and valve does not shut off tightly, valve can be adjusted. On valve sizes 1/2" through 4" the operating handle is the tool for tightening the adjusting cartridge (seat carrier part No. 4). Remove body from pipe line by loosening coupling nuts. Remove handle from stem. Place handle hub into seat carrier and give quarter turn clockwise. Reassemble valve and reconnect to pipe line. On sizes 2 1/2" and 3" use same method but do not remove handle. Use common spanner wrench to turn seat carrier the quarter turn. COMPACT BALLVALVES OPERATING: MAINTENANCE: Manual handle control, arrow on top of handle gives direction for open and close positions. The valve requires no maintenance. Valve cannot be adjusted. When materials wear and valve begins to leak, valve must be replaced. BUTTERFLY VALVES OPERATING: Lever type manual operation. The handle position is the indicator of the blade position in the body. When the lever handle is perpendicular to the pipe line, the blade is in the closed position. If the lever handle is parallel to the pipe line the valve is open. IMPORTANT: The handle has a ten position locking plate. The lever part No. 16 must be disengaged from the locking plate before moving the handle part No. 13 to position desired. OPERATING: MAINTENANCE: Manual Gear type with handwheel or chainwheel. Revolving indicator plate mounted on top of gear box moves to indicate the position of the blade. Mechanical stops are furnished. They can be adjusted to increase or decrease travel into open or closed position. No maintenance required. If valve is to be stored for any length of time, it should be stored in dark and cool condition to lengthen the shelf life of the full faced elastomeric liner seat. Also in outside pipe lines exposed to sun light precautions should be taken to eliminate 11

14 valve failures. Expansion joints in the pipe line are necessary to combat pipe expansion causing crushing and fracturing the flanged portion of the full faced elastomeric liner. This will push the rubber into the seating area and bind the operation of the valve. If an outdoor pipe line subject to direct sun light is not normally conveying flow materials the heat can deteriorate the elastomeric liner and shorten life of valve seat. Manual Gear type operator should be repacked with axle grease every 18 to 24 months. Remove indicator cap Part No. 11 and then the top cap Part No. 9. Pack gears with normal amount of axle grease and reassemble. HORIZONTAL SWING CHECK/BALL CHECK VALVES OPERATING: MAINTENANCE: The flow material direction operates the valve. The valve will close under back pressure of flow material. Periodic maintenance is not required. If parts wear and need replacing the Horizontal Swing Check valve does not need to be removed from piping system. It is necessary to shut off line pressure. Remove valve bonnet and shaft holder bolt and all parts can be easily removed. The ball check valve requires the loosening of the coupling nut. DIAPHRAGM VALVES OPERATING: MAINTENANCE: All size valves are equipped with a handwheel for controlling flow. Valves can be pneumatically or electrically operated as an option. 1/2" through 2" True Union Diaphragm Valves require no maintenance. Flanged valves 3" through 10" have a grease fitting on the bonnet. Standard axle grease should be injected one time every 18 months. Replacing rubber or TFE diaphragm requires removing bonnet and unscrewing diaphragm. When replacing new diaphragm be sure to have seating cross bead directly above body seating ridge. The body seating ridge runs perpendicular to flow stream. 6 STRONG UNION BALL VALVE OPERATING: MAINTENANCE: ADJUSTMENT: Manual handle indicates open and closed position of valve. If valve leaks because of seat wear, seats can be replaced by removing nuts and bolts and removing worn seats. Valve may also leak because of worn seals. They can also be replaced. After removing nuts and bolts ball can be turned sideways and removed from stem. Stem can then be removed and seals replaced on the stem if necessary. When replacing nuts and bolts make sure that all are tightened to the same degree for bubble-tight shutoff. This valve cannot be adjusted for seat wear. Seats must be replaced. 12

15 PROBLEMS AND SOLUTIONS FOR DIAPHRAGM VALVES PROBLEMS POSSIBLE REASONS SOLUTIONS 1. VALVE LEAKS PAST SEATING Diaphragm not closing fully. Un screw gauge cover. Attach wrenches AREA on both the stopper (part No. 16) and the set nut (part No. 17). Turn both parts one full turn counter-clockwise, moving parts toward top of threaded shaft. Replace gauge cover. 2. HANDWHEEL SPINS FREELY, Compressor Pin (part No. 9) has probably Remove bonnet assembly from body. VALVE DOES NOT CLOSE OR sheared due to excessive turning of Tap compressor pin through drilled hole. OPEN. handwheel past the open or closed position Replace with new pin. Reassemble bonnet to body. Caution: Be positive bonnet position has raised seating bead located over body seating ridge before bolting bonnet to body. PROBLEMS AND SOLUTIONS FOR HORIZONTAL SWING CHECKS PROBLEMS POSSIBLE REASONS SOLUTIONS 1.BROKEN SHAFT OR SWING ARM Hammer blow Replace with new parts and remedy hammer blow condition PROBLEMS AND SOLUTIONS FOR BUTTERFLY VALVES PROBLEMS POSSIBLE REASONS SOLUTIONS 1. BROKEN LEVER Attempting to open or close valve without Replace with new lever releasing locking position trigger. Forcing lever past the full open or fully closed " " " " position. Lever hit by external object 2. BLADE JAMMED (CANNOT OPEN Obstruction Disconnect flanges from wafer type OR CLOSE) valve and inspect pipe. Check liner seat for bulging areas where compression on flange area of liner seat has been forced into body area. Possible liner replacement will be necessary. Add expansion joints in piping system. Thermal expansion of pipe line caused by quick change of temperature has " " " " " crushed flange portion of liner into body and excess rubber has bound blade. 3. VALVE LEAKS INTERNALLY Check temperature versus pressure tables. Replace with proper materials. Valve materials not suitable for service. Flow media too abrasive, worn disc, or Replace with proper materials. elastomer seat wear. 13

16 PROBLEMS AND SOLUTIONS FOR BALL CHECK VALUES PROBLEMS POSSIBLE REASONS SOLUTIONS 1. BROKEN BALL OR BROKEN Hammer blow Replace with new parts and remedy SEAT AREA hammer blow condition PROBLEMS AND SOLUTIONS FOR SAFETY BLOCK TRUE UNION BALL VALVES PROBLEMS POSSIBLE REASONS SOLUTIONS 1. BROKEN HANDLE Adjusting cartridge too tight. Loosen coupling nuts. Remove body from pipe line. Use handle or spanner wrench as tool to loosen adjusting cartridge Turn cartridge 1/4 turn counter clockwise. Replace in pipe line after Struck by external object. installing new handle. 2. VALVE BEGINS TO LEAK Excessive seat wear. Use same procedure as above but turn INTERNALLY adjusting cartridge 1/6 turn clockwise. Replace in pipe line. 3. VALVE BEGINS TO LEAK Elastomer fatigue. Remove body of valve from pipe line. EXTERNALLY Replace O ring seal on both end connectors. 4. EXTERNAL LEAKING PAST STEM Elastomer fatigue. Remove valve body from pipe line. Remove adjusting cartridge. Remove handle and then push the ball out of the body. Push stem downward into body. Replace O ring seal or seals and reassemble. PROBLEMS AND SOLUTIONS FOR STRONG UNION BALL VALVES PROBLEMS POSSIBLE REASONS SOLUTIONS 1. HANDLE TURNS BUT BALL DOES NOT OPEN OR CLOSE Broken stem. Disassemble valve and replace with new stem. 2. VALVE BEGINS TO LEAK Excessive seat wear. Use same procedure as above but turn INTERNALLY adjusting cartridge 1/6 turn clockwise. Replace in pipe line. 3. VALVE BEGINS TO LEAK Elastomer fatigue. Remove body of valve from pipe line. EXTERNALLY Replace O ring seal on both end connectors. 4. EXTERNAL LEAKING PAST STEM Elastomer fatigue. Remove valve body from pipe line. Remove adjusting cartridge. Remove handle and then push the ball out of the body. Push stem downward into body. Replace O ring seal or seals and reassemble. All parts are readily available in TVI inventory. COMPACT BALL VALVE The Compact Ball Valve is an inexpensive valve and cannot be adjusted. When valve does not function correctly due to flow abrasion or elastomer fatigue, valve must be replaced. 14

17 THERMOPLASTIC VALVES INC. BALL CHECK VALVE AND BALL CHECK FOOT VALVE ASSEMBLY SIZE: 1/2-4 DWN BY DATE DWG NO. CKP BC CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: D3 D2 9 L F Less Than 1 PSI Pressure to Operate Operates in Vertical or Horizontal Installations One Piece Seat & Seal Excellent Flow Characteristics D1 10 Materials of Construction D B 1 Body 1 PVC,PP,PVDF,CPVC 2 Ball 1 PVC,PP,PVDF,CPVC 3 Seat Carrier 1 PVC,PP,PVDF,CPVC 4 Connector 2 PVC,PP,PVDF,CPVC 5 Union Nut 2 PVC,PP,PVDF,CPVC VITON is a trademark of Dupont Dow Elastomers. 6 Seat 1 EPDM,VITON 7 Seat Carrier O-Ring 1 EPDM,VITON 8 Solid End O-Ring 1 EPDM,VITON 9 Flanged Cut 1 PVC, PP, PVDF,CPVC 10 Foot Valve Assembly 1 PVC Ansi Dimensions Size Inch D L D1 Socket Screw Socket Screw FLG'D B D2 F Working Pressure (PSI) 1 / NPT 1 / / NPT 3 / NPT 1" / NPT 1 1 / / NPT 1 1 / NPT 2" / NPT 2 1 / NPT 3" NPT 4"

18 TVI BALL CHECK VALVES (1/2" - 4") DESIGN SPECIFICATIONS Thermoplastic Ball Check Valves (1/2" - 4") are of all thermoplastic construction. Body has full length ribs for maximum flow, minimum pressure drop, and to eliminate ball sticking and chatter. Ball is of solid thermoplastic material. Seat is full circle and resilient. A molded gasket seal and seat enlarges seating surface and facilitates maintenance. Valves require less than one (1) PSI to open and 3-5 PSI to close drop tight. Valves are capable of installation in either vertical or horizontal pipe run. Valves are readily adaptable for foot valve service with the addition of a screen assembly. Materials of construction shall be as follows: (select as required for service) BODY/UNION NUT / END CONNECTORS PVC,CPVC, ASTM D-1784 PP, ASTM D-4101 PVDF, ASTM D-3222 BALL PVC,CPVC, ASTM D-1784 PP,ASTM D-4101 PVDF,ASTM D-3222 SEAT/SEAL EPDM, Ethylene - Propylene Diene Monomer Fluorocarbon - Viton (Dupont Dow Elastomers) Fluorel (3M Corp.) End connectors shall conform to the following standards: SOCKET ASTM - D-2467 (PVC,SCH-80) ASTM, F-437 (CPVC, SCH-80) THREADED ASTM - D-2464 (PVC, SCH-80) ASTM - F-437 (CPVC, SCH-80) FLANGED ANSI - B16.5 Class 150 Not recommended for compressed air or gas service. 16

19 THERMOPLASTIC VALVES INC. 6 & 10 CHECK VALVES SIZE: 6 & 10 DWN BY DATE DWG NO. CKP BC CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: D6 D6 6 5 n-oe D2 1 D2 2 3 L1 D5 D4 L 4 D5 D4 L L1 D1 D1 T T D3 6" Check Valve 10" Check Valve Materials of Construction 1 Flange End 1 6 PVC (10"-PPG) 2 Seal 1 EDPM, VITON 3 Ball (6 ) screen (10 ) 1 6 PVC(10"-PVDF) 4 Body 1 6 PVC(10"-FRP) 5 Hardware 304 SS 6 Foot Valve Assembly 1 PVC VITON is a trademark of Dupont Dow Elastomers. Ansi Dimensions Size Inch D1 D2 D3 n e L T D4 D5 D6 L1 Working Pressure (PSI) 6" 5.91" 9.49" 11.10" " 0.91" 9.37" 14.37" 6.59" 18.70" 85 10" 9.48" 14.17" 16.14" " 1.34" 19.21" 23.62" 10.51" 27.05" 42 16A

20 TVI BALL CHECK VALVES (6" AND 10") DESIGN SPECIFICATIONS Ball Check Valves (6 ) are of all thermoplastic construction, 10 bodies are fiberglass. The Body has full length ribs for maximum flow, minimum pressure drop, and to eliminate ball sticking and chatter. Ball is of solid thermoplastic material in 6 size. In 10 size screen is PVDF. Seat is full circle and resilient. A molded gasket seal and seat enlarges seating surface and facilitates maintenance. Valves require less than one (1) PSI to open and 3-5 PSI to close drop tight. Valves are capable of installation in either vertical or horizontal pipe run. Valves become foot valves by attaching a screen assembly. BODY/UNION NUT / END CONNECTORS PVC,ASTM D-1784 PP, ASTM D-4101 PVDF, ASTM D-3222 FRP, ASTM BALL/SCREEN PVC,ASTM D-1784 PP,ASTM D-4101 PVDF,ASTM D-3222 SEAT/SEAL EPDM, Ethylene - Propylene Diene Monomer Fluorocarbon - Viton (Dupont Dow Elastomers) Fluorel (3M Corp.) End connectors shall conform to the following standards: FLANGED ONLY ANSI - B16.5 Class 150 Not recommended for compressed air or gas service. 16B

21 THERMOPLASTIC VALVES INC. ARRANGEMENT DRAWING WAFER STYLE BUTTERFLY VALVE FOR ANSI FLANGES SIZE: 2-8 DWN BY DATE DWG NO. CKP BFV CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: K n-øe L L1 Ansi Dimensions Size Inch D1 D2 D3 e n L L1 H1 H2 H3 I K D 3 Test Press Working (PSI) Press Body Seat (PSI) / Testing performed on PVC/PP/EPDM valves at 73 F water temperature, non-shock. Materials of Construction 1 Body 1 PVC,PP,PVDF, CPVC* 2 Disc 1 PVC,PP,PVDF, CPVC* 3 Stem 1 SUS410,SUS304,SUS316 4 Stem O ring 2 EPDM,VITON, BUNA N 5 Washer 1 SUS304 6 Seat 1 EPDM,VITON, BUNA N 7 Disc O Ring 2 EPDM,VITON, BUNA N 8 Disc O Ring 2 EPDM,VITON, BUNA N 9 Stem Retainer 1 SUS304 *CPVC available to Retainer Cap 1 PVC,PP, CPVC, PVDF 11 Positioner 1 SUS304, 8 Use SS41 12 Screw 3 SUS Handle 1 ABS 14 Inserted Metal of Handle 1 CS 15 Nut 1 PVC COATED BRASS, SUS Hand Lever 1 SUS 304,SUS41 17 Spring 1 SUS Set Pin 1 BRASS VITON is a trademark of Dupont Dow Elastomers 17

22 TVI BUTTERFLY VALVE (2" - 8") DESIGN SPECIFICATIONS Thermoplastic Butterfly Valves 2"-24" are wafer style to fit between ANSI B16.5 Class 150 flanges. Disc is smooth and contoured for lowest possible pressure drop ( highest Cv). Shaft is 410 S.S. and of one piece, through shaft design, with square drive through entire length of blade. 2" - 8" valves shall be complete with a spring loaded position latch lever. Seat liners shall be full faced with integral, ribbed flanges. No auxiliary gaskets shall be required for installation. Seat liners shall effectively isolate the body and shaft from the flow media. Seat liners shall also thermally insulate the body from the internal operating temperature. Valve liner and seals are replaceable. Materials of construction shall be: (select as required for service) BODY DISC SHAFT PVC,CPVC (available to 12 ), ASTM D-1784, PP, ASTM D-4101 PVDF, ASTM D-3222 PP, ASTM D-4101 (Standard 2-24 in PVC & PP valves) PVC, CPVC, ASTM D-1784 (CPVC disc standard in CPVC valves) PVDF, ASTM D-3222 ASTM A-240, TYPE 410 S.S. (Standard) 304 S.S., 316 S.S. and Titanium available SEALS / SEAT EPDM, Ethylene Propylene Diene Monomer Fluorocarbon, Viton (Dupont Dow Elastomers) Fluorel (3M Corp.) HARDWARE 2" THRU 24" 304 S.S. 8" size positioner plate 410 S.S. Chrome Plated LEVER ABS, ASTM D-1788 GEAR BOX Cast iron housing ASTM A -53, Epoxy coated OTHER MATERIALS AVAILABLE UPON REQUEST. Not recommended for compressed air or gas service 18

23 THERMOPLASTIC VALVES INC. ARRANGEMENT DRAWING BUTTERFLY VALVE-GEAR TYPE SIZE: 8-24 DWN BY DATE DWG NO. CKP BFV CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: L3 L H 3 H K D4 4 5 L L1 H 1 n-ø e Materials of Construction 1 Body 1 PVC,PP,PVDF, CPVC* 2 Seat 1 EPDM,VITON BUNA N 3 Disc 1 PVC,PP,PVDF, CPVC* 4 Disc O-Ring (A) 2 EPDM,VITON, BUNA N 5 Disc O-Ring (B) 2 EPDM,VITON, BUNA N 6 Stem 1 SUS410, SUS304, SUS316 7 Stem O-Ring 2 EPDM,VITON, BUNA N 8 Gear Box 1 C.I. 9 Gear Box Cap 1 C.I. 10 Side Cap 1 C.I. *CPVC available to Indicator Plate 1 PVC 12 Gear 1 FORGEDSTEEL 13 Oil Seal 1 EPDM 14 Bearing 1 HEATTREATEDSTEEL 15 Adjustable Bolt 2 SS41 16 Gearing 1 SS41 17 Set Pin 1 STEEL 18 Hand Wheel 1 C.I. 19 Tightening Bolt 4 SUS304 VITON is a trademark of Dupont Dow Elastomers. Ansi Dimensions Size Inch D1 D2 n Ø e D3 L L1 H1 H2 H3 K L2 L3 D4 Test Press Working (PSI) Press Body Seat (PSI) Testing performed on PVC/PP/EPDM valves at 73 F water temperature, non-shock

24 TVI BUTTERFLY VALVE (2" - 24") DESIGN SPECIFICATIONS Thermoplastic Butterfly Valves 2"-24" are wafer style to fit between ANSI B16.5 Class 150 flanges. Disc is smooth and contoured for lowest possible pressure drop ( highest Cv). Shaft is 410 S.S. and of one piece, through shaft design, with square drive through entire length of blade. 2-24" valves shall have epoxy coated gear actuators with handwheel. Seat liners shall be full faced with integral, ribbed flanges. No auxiliary gaskets shall be required for installation. Seat liners shall effectively isolate the body and shaft from the flow media. Seat liners shall also thermally insulate the body from the internal operating temperature. Valve liner and seals are replaceable. Materials of construction shall be: (select as required for service) BODY DISC SHAFT PVC,CPVC (available to 12 ), ASTM D-1784, PP, ASTM D-4101 PVDF, ASTM D-3222 PP, ASTM D-4101 (Standard 2-24 in PVC & PP valves) PVC, CPVC, ASTM D-1784 (CPVC disc standard in CPVC valves) PVDF, ASTM D-3222 ASTM A-240, TYPE 410 S.S. (Standard) 304 S.S., 316 S.S. and Titanium available SEALS / SEAT EPDM, Ethylene Propylene Diene Monomer Fluorocarbon, Viton (Dupont Dow Elastomers) Fluorel (3M Corp.) HARDWARE 2" THRU 24" 304 S.S. GEAR BOX Cast iron housing ASTM A -53, Epoxy coated OTHER MATERIALS AVAILABLE UPON REQUEST. Not recommended for compressed air or gas service 20

25 THERMOPLASTIC VALVES INC. WAFER STYLE UNIVERSAL BUTTERFLY VALVE FOR ANSI FLANGES SIZE: 2-8 DWN BY DATE DWG NO. CKP BFV CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: K H6 H4 H5 1 n D H2 H1 I H3 D1 D2 D L1 L2 L3 Materials of Construction 1 Body 1 PVC,PP,PVDF,CPVC 2 Disc 1 PVC,PP,PVDF,CPVC 3 Seat 1 EPDM, VITON, BUNA N 4 Stem 1 SUS 410, SUS Stem O ring 2 EPDM, VITON, BUNA N 6 Washer 1 SUS Positioner 1 SUS Screw 3 SUS Indicator 1 SUS Handle 1 ABS 11 Lever 1 ABS 12 Lever 1 SUS Spring 1 SUS Setpin (Long) 1 SUS Setpin (Short) 1 SUS Handle Cap 1 ABS 17 Stem Bolt 1 PVC, PP, PVDF, CPVC 18 Cap 1 PVC Coated Brass 19 Handle Insert 1 Casting Parts 20 Bolt 1 Brass, SUS Bolt 1 SUS 304 VITON is a trademark of Dupont Dow Elastomers. Ansi Dimensions Nom. size DN-Inch D1 D2 D3 D4 n L1 L2 L H1 H2 H3 H4 H5 H6 I K

26 TVI BUTTERFLY VALVE (2" - 8") DESIGN SPECIFICATIONS Thermoplastic Butterfly Valves 2"-8" are wafer style to fit between ANSI B16.5 Class 150 flanges. Disc is contoured for lowest possible pressure drop ( highest Cv). Shaft is 410 S.S. and of one piece, through shaft design, with square drive through entire length of blade. 2" - 6" valves shall be complete with a spring loaded 6 position latch lever. 8" valves shall be either spring lever or gear actuated as required or specified. Seat liners shall be full faced with integral, ribbed flanges. No auxiliary gaskets shall be required for installation. Seat liners shall effectively isolate the body and shaft from the flow media. Seat liners shall also thermally insulate the body from the internal operating temperature. Valve liner and seals are replaceable. Materials of construction shall be: (select as required for service) Note: The universal style 2-4 butterfly valve fits between ANSI B16.5, DIN, and JIS class 150 flanges, the 6 between ANSI and JIS flanges and the 8 between ANSI flanges. BODY DISC SHAFT PVC,ASTM D-1784, (Standard) PP and PVDF available PP, ASTM D-4101 PVDF available PVDF, ASTM D-3222 PP, ASTM D-4101 (Standard) PVDF available PVDF, ASTM D-3222 ASTM A-240, TYPE 410 S.S. (Standard) 304 S.S., 316 S.S. available SEALS / SEAT EPDM, Ethylene Propylene Diene Monomer Fluorocarbon, Viton (Dupont Dow Elastomers) Fluorel (3M Corp.) HARDWARE 2" S.S. LEVER ABS, ASTM D-1788 GEAR BOX Cast iron housing ASTM A -53, Epoxy coated OTHER MATERIALS AVAILABLE UPON REQUEST. Not recommended for compressed air or gas service 20B

27 THERMOPLASTIC VALVES INC. ARRANGEMENT DRAWING COMPACT BALL VALVE SIZE: 1/2-4 DWN BY DATE DWG NO. CKP CB CERTIFIED CORRECT FOR GENERAL DIMENSIONS Date Per: A 5 6 H NSF NSF14/NSF61 APPROVED A D2 d L 1/2-3 P 3 2 H Materials of Construction L 4 (21/2")-(4") only P 1 Stem 1 PVC, CPVC 2 Ball 1 PVC, CPVC 3 Body 1 PVC, CPVC 4 Stem O-Ring 1 EPDM, VITON 5 Cap 1 ABS 6 Handle 1 ABS 7 Seat 2 EPDM, TEFLON, VITON TEFLON is a trademark of Dupont Dow Elastomers Ansi Dimensions Size Inch Body d Test Press D1 Socket Thread P L D2 H A PSI 1 / NPT 1 / / NPT 3 / NPT / NPT 1 1 / / NPT 1 1 / NPT / NPT 2 1 / NPT NPT Testing performed on PVC materials at 73 F water temperature, non-shock. 21

28 TVI COMPACT BALL VALVES (1/2" - 4") DESIGN SPECIFICATIONS Thermoplastic ball valves 1/2" - 4" shall be compact type and have a one piece molded body with socket or threaded end connections. Seats shall be EPDM. Every valve is fully pressure and cycle tested to insure a quality molded in place finished product.valves have a one piece self centering ball and stem design for leak tight operation. Materials of construction shall be as follows: (select as required for service) BODY PVC, CPVC, ASTM D-1784 BALL & STEM PVC, CPVC, ASTM D-1784 SEATS SEALS T-HANDLE EPDM, Ethylene Propylene Diene Monomer Fluorocarbon - VITON (Dupont Dow Elastomers) Teflon (Dupont Dow Elastomers) EPDM, Ethylene propylene Diene Monomer Fluorocarbon - VITON (Dupont Dow Elastomers) ABS D-1788 End connectors shall conform to the following standards: SOCKET ASTM - D-2467 (PVC, SCH-80) ASTM - F-439 (CPVC, SCH-80) THREADED ASTM - D-2464 (PCP, SCH-80) ASTM - F-439 (CPVC,SCH-80) Not recommended for compressed air or gas service. 22

29 THERMOPLASTIC VALVES INC. ARRANGEMENT DRAWING TRUE UNION DIAPHRAGM VALVE SIZE: 1/2-2 DWN BY DATE DWG NO. CKP TUDV CERTIFIED A CORRECT FOR GENERAL DIMENSIONS Date Per: H d B 7 K 10 5 F 3 P L Materials of Construction 1 Shaft 1 Brass/PVDF 2 Diaphragm 1 EPDM,TEFLON 3 Body 1 PVC,PP,CPVC,PVDF 4 Sleeve 1 Brass/PVDF 5 Union Nut 2 PVC,PP,CPVC,PVDF 6 Handle 1 ABS/PPO 7 End Connector 2 PVC,PP,CPVC,PVDF 8 Bonnet 1 PPO TEFLON & VITON are trademarks of Dupont Dow Elastomers 9 Gauge Cover 1 PC 10 O-Ring 2 EPDM,VITON 11 Compressor 1 PVDF/Brass/PPO 12 Indicator 1 PE 13 Bolt 4 SUS Nut 4 SUS Washer 4 SUS304 Note: For valves to be used in sodium hypochlorite, factory must be consulted for alternate gasket material. Ansi Dimensions Size d Inch Socket Thread P B L H A F K Test Pressures in PSI TFE Rubber Diaphragm Diaphragm 1 / NPT 1 / M / NPT 3 / M NPT M / NPT1 1 / M / NPT1 1 / M NPT M Testing performed with PVC materials at 73 F water temperature, non-shock. 23

30 1/2" - 2" DIAPHRAGM VALVES TRUE UNION TYPE (SOC./THD./FLANGED) DESIGN SPECIFICATION Thermoplastic Diaphragm Valves 1/2" - 2" (valves shall be molded of solid thermoplastic materials.) Body is of the weir configuration exhibiting large flow area and good flow control capability. Stem and sleeve shall be brass. Full stroke position indication is enclosed in a clear protective cover. All external fasteners shall be either encapsulated in plastic or of stainless steel materials. Materials of construction shall be: ( select as required for service) BODY BONNET PVC, CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222 PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222 PPO,ASTM D-4101 (Standard) STEM/SLEEVE Brass COMPRESSOR PVDF, ASTM, D-3222 PPO, ASTM, D-4101 DIAPHRAGM EPDM, Ethylene Propylene Diene Monomer PTFE/EPDM, Teflon (Dupont Dow Elastomers) DIAPHRAGM INSERT STUD Stainless Steel, Large Diameter POSITIVE INDICATOR COVER PC, Polycarbonate, ASTM - D-2848 HANDWHEEL ABS, ASTM D-1788 NOTE: For any diaphragm application with use of sodium hypochlorite, factory must be informed prior to quote. Special application valves are required. 24

31 25

32 FLANGED BODY TYPE 1/2" - 10" DIAPHRAGM VALVES DESIGN SPECIFICATION Thermoplastic Diaphragm Valves 1/2" - 10" shall be molded of solid thermoplastic materials for body and bonnet. Body is of the weir configuration exhibiting large flow area and good flow control capability. Body is designed to fit between ANSI B16.5 class 150 flanges. Stem and sleeve shall be brass or cast iron, fully lubricated. Sizes 3" and larger employ a bonnet grease fitting for ease of lubrication. All valves shall have an adjustable overtravel stop in the close position to prevent overtravel and premature diaphragm failure. Full stroke position indication is enclosed in a clear protective cover. All external fasteners shall be either encapsulated in plastic or of stainless steel materials. Materials of construction shall be: ( select as required for service) BODY BONNET PVC, CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222 PVC,CPVC,ASTM D-1784,PP,ASTM D-4101,PVDF, ASTM D-3222 PPO, ASTM D-4101 (Standard) STEM/SLEEVE Brass, 1/2" - 2", C.I., 2 1/2" - 10" DIAPHRAGM EPDM, Ethylene Propylene Diene Monomer Fluorocarbon, Viton (Dupont Dow Elastomers) only avail. for vacuum service. PTFE/Neoprene, Teflon (Dupont Dow Elastomers) DIAPHRAGM INSERT STUD Stainless Steel, Large Diameter POSITIVE INDICATOR COVER PC, Polycarbonate, ASTM - D-2848 HANDWHEEL ABS, ASTM D-1788 NOTE: For any diaphragm application with use of sodium hypochlorite, factory must be informed prior to quote. 26