Keystone K-LOK High Performance Butterfly Valves Sizes DN Class 150 and 300

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Stanley Evans
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K-LOK Figure 360, 362, 364 ASME Class 150 K-LOK Figure 370, 372, 374 ASME Class 300 Features General applications Marine services Hydrocarbon processing Chemical / Petrochemical processing Purified

Pressure rating: ASME 150 and 300 Vacuum rating: 1.

throughout all pressure ranges, as well as at full rated differential pressure. A variety of materials allows optimum seat life in all applications.

1 K-LOK Figure 360, 362, 364 ASME Class 150 K-LOK Figure 370, 372, 374 ASME Class 300 Features General applications Marine services Hydrocarbon processing Chemical / Petrochemical processing Purified gas Steam and vacuum services Portable water Power and Utilities Fueling HVAC Modulating services Technical data Size range: DN 50 - DN 900 (NPS 2 - NPS 36) Body style: Wafer, Lug and Double Flanged Pressure rating: ASME 150 and 300 Vacuum rating: x 10-3 mm Hg (4 x 10-5 inch Hg) Temperature rating: -40 C to 530 C (-40 F to 1000 F) K-LOK polymer, elastomer, and fire-safe seats provide bi-directional, drop-tight closure in vacuum and throughout all pressure ranges, as well as at full rated differential pressure. A variety of materials allows optimum seat life in all applications. Blow-out proof shaft in accordance with API 609 provides increased operator safety. Integrally cast mounting pad provides direct mounting of many actuators. Rocker-shaped gland bridge compensates for uneven adjustment of gland nuts reducing packing leaks. Extended neck allows for two inches of pipeline insulation. Flattened body bore at shaft journal ports positions shaft bearings near disc, providing maximum shaft support resulting in reduced wear and longer life. Disc taper pins are tangentially positioned half in disc and half in shaft, placing them in compression rather than shear, which eliminates potential for failure. Integrally cast disc position stop perfectly locates the disc in seat, achieving maximum seat and seal life Emerson. All rights reserved. VCTDS EN 15/07

2 Exploded View 1 Wafer and Lug Style Double Flanged Style

3 Standard materials of construction Pos Description Material Material specifications ASTM 1 Body Ductile iron A Carbon steel A216 Grade WCB Carbon steel (LCB) A352 Grade LCB Stainless steel Nickel aluminum bronze Duplex Hastelloy A351 CF8/CF8M/CF3M B148-C95800 A890 Grade 5A A494 CW12MW 2 Disc Aluminum bronze B148-C95200 Nickel aluminum bronze B148-C95800 Stainless steel Stainless steel/enp Monel 400 Duplex Hastelloy A351 CF8/CF8M/CF3M A351 CF8/CF8M/CF3M A494 M-35-1 A890 Grade 1B/3A/5A A494 CW12MW 3 Upper stem Stainless steel A564 Type 630 Monel K-500 QQ-N-286E Inconel 718 B637 UNS N07718 Inconel 725 B805 UNS N Lower stem Stainless steel A564 Type 630 Monel K-500 QQ-N-286E Inconel 718 B637 UNS N07718 Inconel 725 B805 UNS N Seat RTFE RTFE NBR NBR EPDM EPDM FKM FKM Fire safe A240 type RTFE Fire safe Monel RTFE Stainless steel metal A240 Type 316 Monel metal Monel Circle clip Stainless steel A276 Type 316 Monel K-500 QQ-N-286E 7 Disc taper pin Stainless steel A564 Type 630 Monel K-500 QQ-N-286E Inconel 718 B637 UNS N Gland Stainless steel A276 type 316 Bronze B505-C Gland bridge Stainless steel A747 TYPE CB7CU-1 Duplex A890 Grade 1B 10 Bearing RTFE/fiber glass epoxy RTFE/fiber glass epoxy Stainless steel nitrided Stainless steel nitrided Monel K-500 QQ-N-286E Material specifications Pos Description Material ASTM 11 Disc locating shoulder Stainless steel A276 Type 316 Monel K-500 QQ-N-286E 12 Bottom cover Stainless steel A240 Type 316 Ni-al-bronze B148-C Anti extrusion ring Stainless steel A276 Type 316 Bronze B505-C83600 Monel K-500 QQ-N-286E 14 Packing set PTFE PTFE Graphite Graphite 15 Thrust washer Stainless steel/ptfe A240 Type 304 Monel 400 Monel Seat backing ring Rynite Rynite Stainless steel A276 Type Seat backing wire Stainless steel A313 Type 302/316 Monel 400 Monel Seat retaining ring Carbon steel A36 Ni-al-bronze B148-C95800 Stainless steel A240 Type 304/ Retaining ring gasket Non-asbestos Non-asbestos PTFE PTFE Grafoil Grafoil 20 Bottom cover gasket Non-asbestos Non-asbestos PTFE PTFE Grafoil Grafoil 21 Bottom cover screw Steel A193-B7 Stainless steel A193-B8M Class 2 Monel K-500 QQ-N-286E 22 Gland stud/nut/washer Stainless steel A276 Type 304 Monel K-500 QQ-N-286E 23 Clip screw (cap screw) Stainless steel A276 Type 316 Monel K-500 Monel K Shoulder taper pin Stainless steel A564 Type 630 Monel K-500 QQ-N-286E 25 Locating plate Carbon steel A36 Stainless steel A240 Type 304/ Clip (F360/362/370/372 only) Stainless steel A240 Type 304/316 Monel K-500 QQ-N-286E 27 Key Steel A29 Grade 1045 Stainless steel A276 Type 316 Monel K-500 QQ-N-286E Inconel 718 B637 UNS N07718 Inconel 725 B805 UNS N Name plate Stainless steel A240 Type 304 3

4 Principles of operation Double offset disc/shaft K-LOK s unique two-piece shaft and double-offset disc/shaft design allows for high cycling and creates a lower disc profile with increased capacity and a range of 33:1. In addition to increasing the flow area across the disc, this design minimizes wear points between seat and disc. The first offset is achieved by locating the shafts downstream of the center-line of the seat. This allows for a totally unobstructed 360 sealing surface. The second offset locates the shafts off-center of the vertical axis of the seat. The combination of these two offsets creates a camming effect as the disc swings into and out of the seat. The disc lifts quickly out of the seat in the first few degrees of travel and does not contact the seat again until it is nearly closed. There are no wear points between the seat and disc, while operating torques are reduced and seat life is extended. Double offset First offset Competitor one-piece shaft K-LOK two-piece shaft Second offset Two-piece shaft vs. one-piece shaft K-LOK s disc geometry maximizes flow capacity by increasing the available flow area through the valve. This increase in disc efficiency results in a higher valve K v. Fire-safe valve Aspect ratio = open area disc area The K-LOK fire safe version has been tested and certified to API 607 fire test. This design uses a stainless steel or alloy seat of convoluted shape that mates with an RTFE member. In the full-closed position, the K-LOK provides continuous two-plane contact between the disc and both metal and RTFE seats. The fire-safe seat utilizes wire windings to provide the circumferential stiffness necessary to maintain interference between disc and seat. Fire-safe packing K-LOK fire-safe packing is composed of three rings of preformed graphite between one ring of woven graphite rope at the top and bottom. This arrangement creates a superior, high temperature seal against the outer wall of the packing box and around the rotating stem. 4

Seat design The K-LOK seat is a true interference seat design and does not rely on line pressure to assist in sealing.

Polymer (PTFE, RTFE and UHMWPE) seats incorporate a stainless steel braided wire wrap, enclosed in a U-shape envelope to provide seating energy and memory.

The wrap also allows radial flexibility when the disc is not fully closed, reducing seat/disc interference, seat wear and shaft torque.

Elastomer seats are molded around a stack of V-shaped steel rings that provide the same stability, support and flexure as the wire windings in polymer seats.

5 Seat design The K-LOK seat is a true interference seat design and does not rely on line pressure to assist in sealing. All seats seal drop-tight bi-directionally at low pressure as well as high pressure. This allows the K-LOK to provide a tight shutoff even in tough services that contain particulate. Polymer (PTFE, RTFE and UHMWPE) seats incorporate a stainless steel braided wire wrap, enclosed in a U-shape envelope to provide seating energy and memory. This wire wrap allows axial flexibility in both directions of flow. The wrap also allows radial flexibility when the disc is not fully closed, reducing seat/disc interference, seat wear and shaft torque. When the disc closes, it provides circumferential stiffness and assures the required disc/seat seals tight. Elastomer seats are molded around a stack of V-shaped steel rings that provide the same stability, support and flexure as the wire windings in polymer seats. Metal seats employ a stainless steel or alloy ring of convoluted shape, reinforced by stainless steel wire wraps. The thin, convoluted shape allows for expansion and contraction from thermal cycling. Long life is assured by flash coating the seat with chrome. Seat materials Polymer seat Material Typical applications 1. RTFE Reinforced polytetrafluoroethylene HVAC, steam, chlorine, ammonia, nitrogen, water, gasoline, vacuum 2. PTFE Polytetrafluoroethylene Pharmaceuticals, air, potable water, dyes, white mediums 3. UHMWPE Ultra high molecular weight polyethylene Abrasives, suspended solids, scaling mediums For seats 1 thru 3 Wire wrap Stainless steel braided wire Seat backing ring Polyester or phenolic Stainless steel General purpose services up to 93 C Steam, ammonia, elevated temperature services Elastomer seat Material Typical applications 4. EPDM - Water based mediums, slurry applications, abrasives 5. NBR - Oil based mediums, slurry applications, abrasives 6. Fluoroelastomer (FKM) - Elevated temperatures, slurry applications, abrasives For seats 4 thru 6 Metal insert Stainless steel POLYMER SEAT Elastomer seat Metal seat Metal and fire-safe seat Material Typical applications 7. Metal 316 stainless steel or alloy (fash chrome coated) High temperature, low temperature, abrasives, fly ash, slurries 8. Fire-safe Reinforced polytetrafluoroethylene combined with 316 stainless steel Fire-safe installations, abrasives, slurries, steam (flash chrome coated) For seats 7 and 8 Wire wrap Stainless steel wire Fire-safe seat Seat leakage according to ANSI/FCI 70-2 Polymer seat Class VI. Metal and fire safe (post fire exposure) Class IV. NOTE Reference ANSI/FCI 70-2 for further information. 5

6 Recommended standards and specifications ASME B16.34 Steel valves B31.1 Power piping (Sect 107) B16.5 Steel pipe flanges and flange fittings B16.47 Large diameter steel flanges MSS SP-6 Standard finishes for pipe flanges SP-25 Standard marking systems for valves SP-55 Quality standard for steel casting SP-61 Pressure testing of steel valves SP-68 High pressure offset disc butterfly valves API 609 Butterfly valves (most models) 607 Fire-test for soft seated quarter-turn valves 598 Valve inspection and test BS 6755 Inspection and test of steel valves for the petroleum, petrochemical and allied industries 4504 Flanges and bolting for pipes, valves and fittings ISO 5752 Metal valves for use in flanged pipe system 7005 Pipeline flanges for general use K v values vs. travel position Angle of opening Size ASME 150 ASME 300 DN NPS ½ Vacuum rating The combination of interference fit seats and bi-directional packing makes the K-LOK especially well suited for vacuum service. Standard K-LOK high performance valves are rated to an absolute pressure of x 10-3 mm Hg. Higher vacuum applications are available. 6

7 Seating and un-seating torque Seating and un-seating torques are a function of the size of the valve and the shutoff pressure of the system. Specific torque ratings can be found in the seating/un-seating chart at the intersection of the size row and the shutoff pressure column. Torques listed are for PTFE and RTFE seated valves. For different seat materials, specific multipliers are to be used as stated. All torques listed are for normal service conditions (i.e. operating frequency is a minimum of once per month; disc corrosion is expected to be mild or minor, the media is a clean gas, liquid or steam, and is non-abrasive) and chemical effects upon the seat are minor. PTFE AND RTFE BI-DIRECTIONAL SEATING AND UN-SEATING TORQUE VALUES Seating and un-seating torque (Nm) Valve size System shutoff pressure (bar) DN NPS ½ Notes 1. Torques are applicable only to PTFE and RTFE seats in noncorrosive or non-abrasive services such as water. For fire-safe and metal seats, select only the torque for the valve at 20 bar and multiply by For other seat materials, select the torque applicable for the maximum differential pressure and multiply by the following factor: EPDM/NBR/Fluoroelastomer (FKM): x 1.4 UHMWPE (clean service): x 1.3 For services that combine unfriendly conditions such as extreme temperatures and high solids, or corrosive with high temperatures, contact your sales representative. Extension brackets for various temperatures Required extension lengths (mm) Pipeline fluid temperature Handle Gear Std. F89/MRP High temp. F89/MRP Standard F C C C C C C C C Actuation selection Actuator Figure Remarks Handle F401 Leverlock Gear F420 to F430 Range of heavy duty gear operators available Pneumatic F89 Double acting and spring return rack and pinion designs Gear and pneumatic F453/89 "Declutchable gear unit provides manual override for the Keystone pneumatic actuator" Electric EPI 2 Compact electric actuators Notes 1. Surrounding air temperature is assumed to be 21 C. For every degree over 38 C of the surrounding air, deduct 2 degrees from the maximum temperature ranges shown under the Pipeline fluid temperature column. (Example: 52 C external temperature reduces maximum temperature values under the Pipeline fluid temperature column to 325, 410, 510, 600, etc.) 2. Valves may be insulated or uninsulated. 3. Brackets may be open rectangular tubes or the standard closed Keystone tubular shaft extensions. 4. All actuators have a maximum service temperature (outside atmosphere). These temperature limitations apply regardless of K-LOK extension lengths. 7

8 Flange gaskets The K-LOK high performance butterfly valve is designed to accommodate the use of standard, non-metallic gaskets for pipe flanges (such as compressed fiber, non-asbestos, flexible graphite or equivalent gasket materials), meeting the dimensional requirements of ASME B Metallic wound gaskets may also be used, however, please note that any valve with a bolted on retainer requires the wound gaskets material to be manufactured to the following dimensions. Those dimensions not in bold are according to B Outside Inside Size diameter diameter DN NPS (mm) (mm) ½ Pressure/temperature ratings for bodies, discs and seats Temperature ( C) Pressure (bar) ASME 150 body (Series 360, 362, 364) Carbon steel Stainless steel Nickel aluminium bronze Ductile iron ASME 300 body (Series 370, 372, 374) Carbon steel Stainless steel Nickel aluminium bronze Ductile iron ASME 150 disc (Series 360, 362, 364) Stainless steel Nickel aluminium bronze Monel Ductile iron ASME 300 disc (Series 370, 372, 374) Stainless steel Nickel aluminium bronze Monel Ductile iron K-LOK seats PTFE (TFE) Reinforced TFE (RTFE) UHMWPE NBR EPDM FKM Metal SS Monel Fire-safe-RTFE/316 SS Fire-safe-RTFE/Monel

9 Pressure/temperature ratings for seat materials Elastomer seats 55 Polymer seats Carbon steel ASME Carbon steel ASME Pressure (bar) Carbon steel ASME SS ASME 300 Pressure (bar) Carbon steel ASME SS ASME SS ASME SS ASME NBR EPDM Fluoroelastomer FKM Temperature ( C) UHMWPE PTFE RTFE Temperature ( C) Fire-safe and metal seats Note 1 Note 2 Pressure (bar) ASME 150 fire-safe ASME 300 metal seat ASME 150 metal seat ASME 300 fire-safe Temperature ( C) Note 3 Notes 1. Carbon steel ASME 150 body SS ASME 150 body 3. For continuous service above 343 C, please consult your sales representative 9

10 Wafer type Figure 360 ASME Class 150 Valve Dimension (mm) Valve size Top plate data Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ B.C.D Hole no Hole dia (kg) ½ * Figure 370 ASME Class 300 Valve Dimension (mm) Valve size Top plate data Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ B.C.D Hole no Hole dia (kg) ½ Notes *E.N.P discs require larger upper stem connection diameters on 250 mm (10 inch) for metal seat and fire-safe seat trims. The valve dimensions are for reference only. For detailed information, Please consult factory. 10

11 Lug type Figure 362 ASME Class 150 Valve Dimension (mm) Valve size Top plate data Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ B.C.D Hole no Hole dia (kg) ½ * Figure 372 ASME Class 300 Valve Dimension (mm) Valve size Top plate data Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ B.C.D Hole no Hole dia (kg) ½ Notes *E.N.P discs require larger upper stem connection diameters on 250 mm (10 inch) for metal seat and fire-safe seat trims. The valve dimensions are for reference only. For detailed information, Please consult factory. 11

12 Double flanged type Figure 364 ASME Class 150 Valve Dimension (mm) Top plate data Valve size Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ ØA ØB T1 T2 B.C.D Hole no Hole dia X (kg) ½ * Figure 374 ASME 300 Valve Dimension (mm) Top plate data Valve size Weight (DN) (NPS) B1 C D E F ØG H ØK ØQ ØA ØB T1 T2 B.C.D Hole no Hole dia X (kg) ½ Notes *E.N.P discs require larger upper stem connection diameters on 250 mm (10 inch) for metal seat and fire-safe seat trims. The valve dimensions are for reference only. For detailed information, Please consult factory. 12

13 General purpose trims (up to 121 C) Body Disc Shaft Seat/backing ring Packing Bearing Body gasket Steel 316 SS/ENP 17-4PH SS UHMWPE/SS PTFE SS-nitrided Graphite 316 SS 316 SS/ENP 17-4PH SS UHMWPE/SS PTFE SS-nitrided Graphite General purpose trims (up to 260 C) Body Disc Shaft Seat/backing ring Packing Bearing Body gasket Steel 316 SS/ENP 17-4PH SS RTFE/SS PTFE SS-nitrided Graphite 316 SS 316 SS/ENP 17-4PH SS RTFE/SS PTFE SS-nitrided Graphite Steel 316 SS 17-4PH SS RTFE/SS PTFE SS-nitrided Graphite 316 SS 316 SS 17-4PH SS RTFE/SS PTFE SS-nitrided Graphite Metal seated - high temperature trims Body Disc Shaft Seat/backing ring Packing Bearing Body gasket Steel 316 SS/ENP 17-4PH SS 316 SS chrome plated Graphite SS-nitrided Graphite 316 SS 316 SS/ENP 17-4PH SS 316 SS chrome plated Graphite SS-nitrided Graphite Corrosion resistant trims Body Disc Shaft Seat/backing ring Packing Bearing Body gasket 316 SS 316 SS 316 SS Cond. B RTFE/SS PTFE SS-nitrided Graphite 316 SS 316 SS NITRONIC 50 RTFE/SS PTFE SS-nitrided Graphite Fire-safe trims Body Disc Shaft Seat/backing ring Packing Bearing Body gasket Steel 316 SS/ENP 17-4PH SS and RTFE 316 SS chrome plated Graphite SS-nitrided/RTFE-epoxy Graphite 316 SS 316 SS/ENP 17-4PH SS and RTFE 316 SS chrome plated Graphite SS-nitrided/RTFE-epoxy Graphite MARINE OFFSHORE TRIMS Body Disc Shaft Seat/backing ring Packing Bearing Body gasket Ni-Al Bronze Ni-Al Bronze Monel K-500 RTFE/SS PTFE RTFE-epoxy Non-Asbestos Ni-Al Bronze Ni-Al Bronze Monel K-500 Monel 400+ RTFE Graphite Monel K-500/RTFE-epoxy Graphite Note Other trims are available; please contact your sales representative. 13

KEYSTONE K-LOK SERIES H HIGH PERFORMANCE BUTTERFLY VALVES

KEYSTONE K-LOK SERIES H HIGH PERFORMANCE BUTTERFLY VALVES Series H1 ASME Class 150 / 25 bar Series H2 ASME Class 300 / 50 bar FEATURES GENERAL APPLICATIONS Airport refueling Hydrocarbon processing Chlorine Chemical processing Purified gas Steam and vacuum services