Rubber Swing Check Valves Flanged Joint Ends 250PSI/300PSI

        Introduction
        Usage:                It can prevent the water from flowing 
                              backward.
        Connection Ends:      Flange - ASME B16.1 
        Inspection Pressure:  250PSI:  Shell: 500PSI Seal: 250PSI
        300PSI:               Shell: 600PSI Seal: 300PSI
        Surface:              Coating: Akzo Nobel Fusion Bonded Epoxy 
                              Coating with thickness 150-500um, 
                              Complies with ANSI/AWWA C550
        Applications:         Potable water, water supply and drainage, 
                              sewage disposal, irrigation and fire 
                              protection pipe system etc.