RK 800-CK 1/2-1

This check repair kit for a pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. This check repair kit for a pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. This kit consists of a check disc assembly (disc holder, disc, washer, guide and screw), bonnet O-ring and check spring.