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美國ALSO艾索閘閥（Gate Valve）

Forged Steel Gate Valve -> Forged Steel Gate Valve
For gate valves which sizes are 2"(DN50) and smaller, forged steel valves are introduced. Compared with castings, forged valve bodies offer the advantages of more uniform structure, greater density, higher strength integrity, enhanced dimensional characteristics and closer dimensional tolerances.
The design of forged steel gate valves are also various: Full port, conventional port / reduced port; bolt bonnet, welded bonnet and pressure seal bonnet; socket weld (SW), threaded, butt welded (BW) and flanged end. Special designs include bellows seal gate valve, cryogenic gate valve to -196C, extended body gate valve, per customers' requirements.
 
Features of Forged Steel Gate Valves:
Outside screw and yoke
rising stem and non-rising handwheel
Solid wedge
Full port or conventional port
Bolted bonnet, welded bonnet or pressure seal bonnet
Socket weld (SW), threaded, butt welded (BW) or flanged end
 
Applicable standards of Forged Steel Gate Valves:
a) Design & Manufacture: API 602, BS 5352, ASME B16.34
b) Face to Face: ASME B16.10, EN 558
c) Connection End: ASME B1.20.1, ASME B16.11, ASME B16.25, ASME B16.5, EN 1092
d) Test and Inspection : API598, EN 12266

Sizes: 1/2" - 2" or DN12 - DN50
Pressure Rating: Class 150 - Class 2500 or PN 16 - PN 420
Material of valve body: A105, LF2, F11, F22, F5, F304, F304L, F316, F316L, etc.
Operated by: Handwheel