Kindly refer to below butterfly valve data :
Dual plate check valve,12’’, pressure class 300, connecting type wafer , clamped between two flanges. Material body ASTM A216 WCB, the disc AISI304 ( CF8 ), pin AISI304.
The check valve shall be installed between flange as per standad ANSI B16.5, the valve shall be tested and inspected by water for shell and high pressure seat sealing, as per international standard.
The check valve was tested, no visual leakage found during hydro testing and air testing, meet requirement of API598 standard . dimemsions checking and function checking result is acceptable
The detail value of hydro-static is as below :
Shell testing: by hydro-static ( water ) with 7.5Mpa
High pressure closure testing : by hydro-static ( water ) with 5.5Mpa
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Zhejiang Zhengfeng Valve Co., Ltd