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Low Temperature Gate Valves

Low Temperature Gate Valves

■Structural features:
① To avoid abnormal pressure rise in the middle chamber, pressure relief opening is fitted at the inlet side of disc.
② The length of the top of bonnet depends on the working temperature of valve to ensure reliable sealing of stem packing.
③ Use reasonable materials for the components like packing and gaskets etc. according to working temperature.
④ Strict control of the chemical composition of materials and the mechanical performance index such as low temperature impact toughness etc. 
⑤ Use of multiple standards of piping flange and types of sealing surface to satisfy different engineering requirements.

 

Standard specifications:

Design and Manufacture
Structure Length
Flange
Pressure-Temperature Grade
Test

JB/T7749

BS6364

ANSI B16.10

GB12221

ANSI B16.5
GB9112~9131
JB/T74~90
SH3006
HG20615~20635

ANSI B16.34

JB/T7749

API598

JB/T9092


 

Suitable temperature

Material

LCB

LC1

LC2

LC3

CF8、ZG1Cr18Ni9Ti

Temperature℃

≥-46

≥-59

≥-73

≥-101

≥-196

 

Related Category: Gate Valves

Related Keywords: Carbon Steel Gate Valves  Miniature Gate Valves  Steel Gate Valve