Valve Pressure Relief Max Flow GPM 6 Pressure Range (PSI) 300 to 600 Max Fluid Temp (F) 180 Body Material Bronze Wetted Materials SS Inlet Port (In.) 3/4 (M)NPT Outlet Port (In.) 3/4 (F)NPT Max Pressure (PSI) 600 Application For Prevention of Damage to Positive Displacement Pumps For Use With Postive Displacement Pumps