1/2″ Atmospheric VaccumBreaker

Atmospheric vacuum breaker means a device, which prevents backstopping by creating an atmospheric vent when there is either a negative pressure or sub-atmospheric pressure in the water system. It includes Vaccum breaker body,  Piston for 1/2″ AVB, Sealing Washer,  Large O-Ring for 1/2” AVB, Vacuum Breaker Insert, Cover Plate for 1/2″ AVB, Name Plate for 1/2″ AVB, SCREW FOR GAS SHUT
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