Watts WB-N4 - Part of the WB Series Pipe Connection Fitting and cover O-ring relief valve

and cover O-ring relief valve spring

UPC - 098268614695

- Environmentally Safe: Both the rubber and polymers are chemically inactive

UPC - 098268236651

It has socket weld connections

Watts WB-N4 - Part of the WB Series Pipe Connection Fitting and cover O-ring relief valveThis WattsBox insulated enclosure protects backflow prevention assemblies, such as PVBs, double checks, and RPZs, that are subjected to freezing conditions. The enclosure consists of reinforced aluminum construction, providing access through lockable doors and or a hinged lid for testing and certification purposes. It has a means for a permanent anchor and is completely removable for maintenance purposes. It has drain openings that are protected