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Cryogenic Butterfly Valve
Technical parameters and characteristics：
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Product type |
ON/OFF |
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Product description |
Cryogenic Butterfly Valve |
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Model |
DD343H-Cryogenic Butterfly Valve |
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Nominal diameter |
NPS 2”～48”(DN50～DN1200) |
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Nominal diameter |
-196℃～340℃ |
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Nominal pressure |
CLASS 150～900 （PN20～PN150） |
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Material |
Main material: A351 CF8、CF8M、CF3、CF3M;A352 LCB、LCC, etc. |
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Design standard |
API 609、ASME B16.34、BS 6364 |
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Structural length |
ASME B16.10、GB/T 12221、API 609 |
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Connecting end |
ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113 |
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Test standard |
API 598、ISO 5208、GB/T 26480、GB/T 13927、BS 6364 |
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Operation method |
Handle, worm, motor-drive unit, pneumatic drive unit |
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Application fields |
Low temperature industries such as LNG, LPG, LEG, air separation, etc. |
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Other remarks 1 |
The extension dimensions of valve stem and bonnet may vary according to different temperature ratings. |
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Other remarks 2 |
The main parts subject to a temperature ≤-101℃ are subzero treated to prevent valve deformation under ultra-low temperatures. |
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Other remarks 3 |
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. |
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Other remarks 4 |
Compact structure, easy installation and disassembly, repair friendly and light weight |
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Other remarks 5 |
It has a certain adjustment capability, and can be used as a control valve. |
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Other remarks 6 |
Good sealing performance of zero leakage |
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Other remarks 7 |
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. |
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Other remarks 8 |
Blow-off prevention design to ensure the operation safety |
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Other remarks 9 |
Drain board design to effectively prevent inflow of condensate to insulation layer |
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Other remarks 10 |
Low leakage packing is used for valve stem sealing to meet the requirement for low leakage. |