WW0886040, Watts, 1/2 - 3/4 IN 800M3 PVB Bonnet Repair Kit

This 1/2 to 3/4 Inch bonnet repair kit for the pressure vacuum breaker, series 800M3, prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a bonnet and bonnet O-ring, vent spring, hood and hood screws. It is ideal in health hazard continuous pressure applications such as irrigation systems and industrial process water systems where the water enters the equipment at or below its flood rim.