They define the spray pattern

This is Graco Air Pro Pressure Feed Spray Gun Air Valve Repair Kit with part no

Innovative one-piece plunger design to eliminate water entering crankcase

Help reduce wear & tear on the connectors

• Provide consistent feed pressures and fl ow rates for dependable results

4000 PSI @ 3.5 GPM Horizontal Gas Engine Triplex Plunger Replacement Pressure Washer Pump 4HP They define the spray patternAnnovi Reverberi AR RSV35G40D F40 horizontal gas engine triplex plunger pump is rated up to 3. 5 GPM at max 4000 PSI at 3400 RPM using a ?F inlet and ? F discharge thread. D version 1 with a gas engine flange. Max GPM 3. 5 Max L Min 13. 2 Max PSI 4000 MaxBar 275 Power EBHP 9. 6 Bore Dia mm 15 Stroke mm 8. 2 Crankshaft ID Stamp 8 Inlet 3 8" F Outlet 3 8" F Max Temp 140 F Oil Capacity (oz) 16 Weight 14 RPM 3400 Shaft Size 1" Shaft Version D Shaft Type