6815-3/4-HSS-700 Piston-Type Pressure Relief/Regulating Valve.
HSS Version, 3/4" Inlet & Pipe Connection, 700 psi max.
Bypasses excess liquid. Adjustable to maintain control of line pressure at any pressure within the valve's operating range. Selected pressure setting firmly held in place by locknut. Extra large valve passages to handle large flows.
Also available in 1/2" and in 300 and 1200 psi.