Product
Cryogenic Gate Valve
Our Cryogenic Gate Valve is designed in two different bonnet types. One is bolted bonnet, where the valve body and bonnet are connected by bolt nuts and wound gaskets (316 clamp flexible graphite). Metal ring connections are also available for special requirements. The other type is welded bonnet with threaded connection between valve body and bonnet.
Specification
Size: DN15~800mm
Pressure : PN1.6~2.5Mpa
Main Material: LCB、LF1、 LF3、LC3、 CF8、 F304 ect.
Suitable Temperature: -45°C~ 196°C
Design: JB/T 7749-95
Face to face : GB/T 12221-1989
Test: JB/T 9092-1999
Main Parts Material:
Body/Bonnet | Stem | Seat | Gasket | Packing | Medium |
LCB | 1Cr7Ni12
| STL/STL | 1Cr13/Flexible graphite Low-temperature asbestos | PTFE Flexible graphite | Propane/propene Methanol/ethane Gas/liquid ammonia |
LC1 | |||||
LC2 | |||||
LC3 | |||||
LC4 |
Features:
- The fluid resistance is small, and the sealing surface is less affected by the brushing and erosion of the medium.
- Easy to open and close.
- The flow direction of the medium is not limited, no disturbance and no pressure reduction.
- Simple shape, short structure length, good manufacturing process, wide range of application.
- It is easy to cause erosion and abrasion between the sealing surfaces, and maintenance is more difficult.
- The appearance size is large, and a certain space is required for opening. Take long time to open and close.
- The structure is more complicated.