VR54 PRESSURE ACTUATED UNLOADER (6961)The unloader valve diverts water flow into bypass when the trigger gun valve is closed. Unloaders may be designed to respond to either an increase in pressure or a change in flow. The unloader valve may also be used for variable pressure adjustment. SPECIFICATIONS Max GPM 8 Max PSI 2900 Inlet 3 8" NPT M Outlet 3 8" NPT M Max Temp 194 F By Pass 3 8" NPT F Knob Red