Series 957 reduced pressure zone assemblies and 957RPDA reduced pressure detector assemblies come in sizes 2½ to 10 inches
Feature a valve body, sleeve and bottom-mounted relief valve made from corrosion-resistant stainless steel
Groove connections ease installation and pipe alignment
Patented torsion spring check modules ease serviceability
Approved with gate valves, UL/FM butterfly valves or quarter-turn ball valves, as well as horizontal, N or Z pattern installations
