See below check valve data :
Dual plate check valve wafer type, 14’’ class150, type wafer, which be installed between two flanges, pipe flange dimension as per ANSI B16.5, valve material is ductile iron with stainless steel: body ductile iron, disc material as per ASTM A351 CF8, pin AISI304, seat EPDM, spring material AISI304. the check valve is automatic operated .
The check valve was tested and inspected by water for shell and high pressure seat sealing, as per international standard.
For the ductile iron, standard coating is FEB Epoxy coating, the finishing coating color is RAL5005 blue color .
The check valve was tested, no visual leakage found during hydro testing, meet requirement of API598 . dimension checking and function checking result is ok . material checking result is ok.
The detail value of hydro-static is as below :
Shell testing 1.5times of nominal pressure : by hydro-static ( water ) with 3.0Mpa
High pressure closure testing 1.1time of nominal pressure: by hydro-static ( water ) with 2.2Mpa
ZFV Zhejiang Zhengfeng Valve Co., Ltd is a professional valve manufacturer, beside butterfly valve also provide high quality check valve , ball valve and other type valves. With operation manual handle, worm gear, pneumatic actuator, electric actuator and so on, to satisfy customers over the world.
Zhejiang Zhengfeng Valve Co., Ltd