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WW0887178, Watts, 3/8-1/2 Backflow Bonnet Repair Kit, 289
Item #: WW0887178
Manufacturer: Watts
Supplier #: 0887178
This 3/8 to 1/2 inch spill resistant atmospheric vacuum breaker repair kit is for series 289, which prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a vent spring, bonnet and bonnet O-ring.