Technical data
PN(MPa)Nominal pressure | 1.6 | 2.5 | 4.5 | |
(MPa)Test pressure | Shell strength test | 2.4 | 3.75 | 6.0 |
Seal teat(Liquid) | 1.76 | 2.75 | 4.4 | |
Seal teat(Gas) | 0.5-0.7 | |||
Suitable mediun | Water,steam,oil | Niter acids | oil | |
Suitable tempetature | ≤425 | ≤100 | ≤550 |
Meterial of main parts
Product Type | Part name | |||
valve body, valve bonnet | Valve disc, valve seat | Gasket | Fastenser | |
H44H(C) Y | WCB or 25 | H: 25+Chromium stainless steel Y: 25+Carbide | Stainless steel with flexible graphite The steel strip Asbestos-wound gasket Spiral wound gasket | High quality carbon steel |
H44Y (I) | Chromium-molybdenum steel | Chrome molybdenum steel + Carbide | Alloy steel | |
H44W (P) | Chrome-nickel titanium, chromium-nickel-molybdenum and titanium stainless steel | Stainless steel | ||
H44W (R) |