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Tel:  +86-577-6735 6515
       +86-577-6799 5055
Zip code:  325102
Fax:  +86-577-6735 8449
         +86-577-6799 5056
Address:  NO.1921 Binhai Avenue 1, Economy & Technology Development Zone, Wenzhou City, Zhejiang Province, China 325025

产品详情
Ultra-low temperature butterfly valve

Technical parameters and characteristics:

Product type ON/OFF
Product description Low temperature butterfly valve
Model DD343H-low temperature butterfly valve/td>
Nominal diameter NPS 2”~48”(DN50~DN1200)
Operating temperature -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
Operation method/td> Handle, worm, motor-drive unit, pneumatic drive unit
Application fields Low temperature industries such as LNG, LPG, LEG, air separation, etc.
Other remarks 1 The extension dimensions of valve stem and bonnet may vary according to different temperature ratings.
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 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 4 Compact structure, easy installation and disassembly, repair friendly and light weight
Other remarks 5 It has a certain adjustment capability, and can be used as a control valve.
Other remarks 6 Good sealing performance of zero leakage
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.
Other remarks 8 Blow-off prevention design to ensure the operation safety
Other remarks 9 Drain board design to effectively prevent inflow of condensate to insulation layer
Other remarks 10 Low leakage packing is used for valve stem sealing to meet the requirement for low leakage.
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