|
Cryogenic Gate Valve
Technical parameters and characteristics:
Product type |
ON/OFF |
Product description |
Cryogenic Gate Valve |
Model |
Z40H、Zp43/44/48H(F)-Cryogenic Gate Valve |
Nominal diameter |
NPS 2”~48”(DN50~DN1200) |
Operating temperature |
-196℃~300℃(the range of service temperature may vary for different materials ) |
Nominal pressure |
CLASS 150~2500 (PN20~PN420) |
Material |
Main material: A351 CF8、CF8M、CF3、CF3M;A352 LCB、LCC, etc. |
Design standard |
API 600、API 6D、ASME B16.34、GB/T 12234、GB/T 12224、BS 6364 |
Structural length |
ASME B16.10、GB/T 12221 |
Connecting end |
ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113、GB/T 12224 |
Test standard |
API 598、ISO 5208、GB/T 26480、GB/T 13927、BS 6364 |
Operation method |
Non-elevating hand wheel, bevel gear, motor drive unit, pneumatic drive unit |
Application fields |
For application of liquid nitrogen, liquid hydrogen, liquid oxygen, etc. in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, chemical engineering in urban construction, etc. |
Other remarks 1 |
The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve. |
Other remarks 2 |
The main parts subject to a temperature ≤-101℃ are subzero treated to prevent valve deformation under ultra-low temperatures. |
Other remarks 3 |
SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing. |
Other remarks 4 |
Rising stem structure, making the valve switch position be clear at a glance |
Other remarks 5 |
The valve stem thread will not come into contact with the medium, so the corrosion of medium to the thread is reduced. |
Other remarks 6 |
Small switching moment, reliable sealing |
Other remarks 7 |
The gate valve has the wedge resilient, self-sealing parallel double-plate and stretching type parallel double-plate structures, so the sealing performance is good. |
Other remarks 8 |
Small flow resistance, high flow capacity and good flow characteristics |
Other remarks 9 |
For small wedge resilient gate valves, the interchangeability can be ensured with process tooling. |
Other remarks 10 |
Through improving the structural design and selecting reasonable packing structure and qualified packing supplier, the valves can meet the Class A sealing test requirements of ISO 15848 FE. |