Product Description
Stainless Steel Cryogenic Gate Valve
Applications such as liquefied natural gas and other low temperature fluids, present special extreme temperature valve functionality challenges. Valves designed for cryogenic services, are specially prepared and designed to overcome these challenges. Appropriate component materials such as 304SS (CF8) and 316SS (CF8M) are normally used for body and trim, offering superior impact strength, and excellent corrosion resistance and heat loss properties. An extended bonnet and gas column design is also normally adopted to provide thermal insulation at the stem seal and stem packing area. At sufficient length, this design feature places the functionality of the stem seal in the vapor zone of the liquid media providing safe and continuous valve operation. A variety of body, trim, seat, and seal materials are available for use in cryogenic service. Customer specified options, such as body cavity vent hole, special extension lengths, and materials are also available upon request.
Features of Stainless Steel Cryogenic Gate Valves:
Applicable for Low Temperatures down to -320° F(-196° C)
Extended Bonnet
Pressure release holes
Materials subzero treatment and test
Designs according to ASME B16.34
Applicable standards of Stainless Steel Cryogenic Gate Valves:
A) Design & Manufacture: API 602, BS 5352, ASME B16.34
B) Face to Face: ASME B16.10, EN 558, MSS SP-84
C) Connection End: ASME B1.20.1, ASME B16.11, ASME B16.25, EN 1092
D) Test and Inspection: API598, EN 12266, ISO 5208
Sizes: 1/2" - 2" or DN15 - DN50
Pressure Rating: Class150 - Class1500 or PN16 - PN250
Material of valve body: LF1, LF2, LF3, LF9, F304, F304L, F316, F316L, etc.
Operated by: Handwheel
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Material specification
NO. | Part | A352 LCB | A352 LC1 | A352 LC2 | A352 LC3 | A352 LC4 | A352 CF8 |
01 | Body | A352 LCB | A352 LC1 | A352 LC2 | A352 LC3 | A352 LC4 | A352 CF8 |
02 | Seat ring | A182 F304+STL | A182 F304+STL | A182 F304+STL | A182 F304+STL | A182 F304+STL | A182 F304+STL |
03 | Wedge | A352 LCB+STL | A352 LC1+STL | A352 LC2+STL | A352 LC3+STL | A352 LC4+STL | A352 CF8+STL |
04 | Stem | A182 F6a | A182 F304 |
05 | Gasket | Spiral wound/Soft Iron/PTFE |
06 | Bolt | A320 L7 | A193 B8 |
07 | Nut | A193 2H | A194 8 |
08 | Back seat | A182 F6a | A182 F304+STL |
09 | Yoke | A352 LCB | A352 LC1 | A352 LC2 | A352 LC3 | A352 LC4 | A352 CF8 |
10 | Gland Bocking | Graphite |
11 | Gland | A182 F6a | A182 F6a | A182 F6a | A182 F6a | A182 F6a | A182 F6a |
12 | Gland Flange | A352 LCB | A352 LC1 | A352 LC2 | A352 LC3 | A352 LC4 | A352 CF8 |
13 | Stem nut | Cu-Aolly,A439 D-2 |
14 | Yoke nut | A194 2H |
15 | Handwheel | Malleable Iron/cast steel/Ducile/Fabricated |
16 | Handwheel nut | A194 2H |
17 | Nameplate | Stainless steel |
18 | Pin | A182 F6a |
Working temperature | -46 font | -60 font | -73 font | -101 font | -115 font | -196 font |