1-1/4" Differential Pressure Regulator

Used to eliminate excessive pump head pressure when most radiator valves are closed due to reduced demand. Install between supply and return sides of a hydronic system to stabilize pressure differential and reduce the effects of demand changes. Control maintains a constant differential between the two sides by opening a bypass whenever the difference between supply and return reaches the setpoint. Provides silent, trouble-free service. Easy installation; requires no electrical hookup. Easy adjustment of pressure by turning regulating cap. Built-in differential pressure indicator. Brass valve body with thermoplastic and stainless steel parts. Diaphragm of EPDM. Description: Differential Pressure Regulator, 3/4 in. Pipe Size (inch): 1 1/4 in. Pipe Size (DN): DN20 Pipe Connections: Angle type, female threaded NPT Outlet Pressure Adjustment Range (psi): 0-17 psi Max. Inlet Pressure Rating (psi): 85 Psi Materials: Brass (body), Stainless steel and engineered thermoplastics. EPDM diaphragm. Dimensions (in.): 6 1/4 in. high x 3 3/8 in. wide Dimensions (mm): 160 mm high x 86 mm wide Capacity: 395,000 Btu/hr Capacity: 18 gpm Temperature Range (F): 230 F Temperature Range (C): 110 C Includes: Built-in differential pressure indicator