Cryogenic Butterfly Valve
Technical parameters and characteristics：
Product type | ON/OFF |
Product description | Cryogenic Butterfly Valve |
Model | DD343H-Cryogenic Butterfly Valve |
Nominal diameter | 2″～48″ |
Nominal diameter | -196℃～340℃ |
Nominal pressure | CLASS 150～900 （PN20～PN150） |
Material | Main material: A351 CF8, CF8M, CF3, CF3M; A352 LCB, LCC, etc. |
Design standard | API 609, ASME B16.34, BS 6364 |
Structural length | ASME B16.10, GB/T 12221, API 609 |
Connecting end | ASME B16.5, ASME B16.47, ASME B16.25, GB/T 9113 |
Test standard | API 598, ISO 5208, GB/T 26480, GB/T 13927, BS 6364, GB/T24925 |
Operation method | Handle, worm, motor-drive unit, pneumatic drive unit |
Application fields | Low temperature industries such as LNG, LPG, LEG, air separation, etc. |
Technical characteristics | The extension dimensions of valve stem and bonnet may vary according to different temperature ratings. |
The main parts subject to a temperature ≤-101℃ are subzero treated to prevent valve deformation under ultra-low temperatures. | |
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. | |
Compact structure, easy installation and disassembly, repair friendly and light weight | |
It has a certain adjustment capability, and can be used as a control valve. | |
Good sealing performance of zero leakage | |
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. | |
Blow-off prevention design to ensure the operation safety | |
Drain board design to effectively prevent inflow of condensate to insulation layer | |
Low leakage packing is used for valve stem sealing to meet the requirement for low leakage. |