Watts 994-DOSY-FS 4 - Part of the 994 Series Z100F-4NH The pressure setting is 28

The pressure setting is 28 psi

ZB400K-4IP

Engineered copper-silicon body material

Available with secure

Watts 994-DOSY-FS 4 - Part of the 994 Series Z100F-4NH The pressure setting is 28This 4 inch reduced pressure zone assembly backflow preventer help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. Its compact modular design facilitates easy maintenance with a single access cover for in line repairs. This assembly consists of a short lay length lead free stainless steel body, test cocks, corrosive resistant stainless steel bottom mounted relief valve, torsion spring check