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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

                  產品詳情
                  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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                  Subsidiaries of Fangzheng Valve Goup
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