Bonnet Assembly Kit Consist of: Bonnet Bonnet 'O'-ring Vent spring Hood & hood screws;It consists of bronze body construction, a silicone rubber check valve disc, and a plastic check valve seat;This pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphonage

• Watts 0887701 Bonnet Assembly Repair Kit

Watts 0887701 Bonnet Assembly Repair KitPark Supply of America