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

and cover O-ring relief valve spring

It has socket weld connections

Non-metallic disc-to-metal seating

The HDPE material is waterproof and can act as a water barrier to prevent damage to drywall and wood from frequent water exposure

integrated sediment bucket

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