VRT3-310A Unloader, Black Spring, 4500 PSI, 10.5 GPM, No Adjustment Knob, Brass

Performance: 4,500 max PSI, 10.5 max GPM Inlet: 2 x 3/8" F ,Outlet Fitting: 3/8" F,By-Pass Port Fitting: 2 x 3/8" F Features an Easy Start Valve Relieve built up pressure within your pump Made with durable brass