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美國ALSO艾索閘閥（Gate Valve）

Cryogenic Gate Valve -> 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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