PRODUCT FEATURES General Pump Pulsar 4 Unloader Maximum Volume: 10.5 GPM Maximum Discharge Pressure: 4000 PSI Inlet Port Size: 3/8" FPT Discharge Port Size: 3/8" FPT Bypass Port Size: 3/8" FPT Reviews Featured Products Pressure Pro Pressure Pro Belt Driven 4 GPM @ 4000 PSI General Pump $2,314.05 Choose Options General K-1 $136.17 Add to Cart General Seal Kit #69 $84.64 Add to Cart General Pump Thermal Relief Valve $16.35 Choose Options