Die Cast Aluminum Crankcase Aluminum Connecting Rod Nickel Plated Brass Pump Head Oil Bath Lubrication 18.2 hp HP Required @ 2000 PSI 4.5 hp HP Required @ 500 PSI 1 450 RPM RPM Ceramic Plunger Seal V Style Chevron and Buna N Lip Outlet 1/2 in F Manifold Material Nickel Plated Brass Solid Shaft Shaft Dia 30 mm 22.6 hp HP Required @ 2500 PSI 13.6 hp HP Required @ 1500 PSI 27.1 hp HP Required @ 3000 PSI Application High Pressure Water Inlet Port (In.) 1 F Pump Pressure