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Check valve
•   應(yīng)用規(guī)范　Application Norm:

1.  設(shè)計制造按 12236-89
    Design Manafacfure According to 12236-89

2.  結(jié)構(gòu)長度按 GB 12221-89規(guī)定
    Face to Face According to GB 122221-89

3.  法蘭型式及尺寸 JB/T79-94
    End Flange Dimenaion Accoring to JB/T79-94

4.  閥門檢查和試驗按 API STD.598
   Valve Check and Test According TO API 598

•   主體材質(zhì) Main Material
    CF8、CF3、CF8M、CF3M、WCB