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Swing check valve
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Valve materials: WCB、A105、LCB、LF2、WC6、F11、WC9、F22、12Cr1MoV、C12A、F91、F92、CF8、F304、CF8M、F316、CF3、F304LCF3M、F316L、CF8C、F347、F304H、 F316H、F321H、4A、F51<br/> Manufacturing standards:National standard GB,German DIN, American API, ANSI
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