This Comet EWD4042G-K Pressure Washer Pump 4200 PSI @ 4 GPM (6311.0100.10) is an oil filled Triplex Pump that comes complete with a plumbed Pressure Regulator, Easy Start Valve and Detergent Injector. Just mount the pump, attach a garden hose, set to the desired pressure, and you are ready to go.

Forged Bronze Connecting Rods and Hardened Stainless Steel Piston Guides. COMET PUMPS offer extended life with High Efficiency Stainless Steel Check Valves, Abrasion Proof, Heat Resistant, Industrial Ceramic Plungers and High Quality Buna-Textile Double-Sealing V-Packings. Industry Leading Diecast, Anodized Aluminum Crankshaft-Fin Design for Optimal Operating Temperature. Powerful triplex plunger pump with VRT3 (Industry Favorite) unloader valve with EZ start features minimizes static back pressure for no load startup, thermal relief safety valve and inline fuel filter. Additionally, this model includes an overheat safety valve that will open and close automatically to allow the recirculating higher temperature water to be released and allow cool water to replace it, helping to protect the wear parts.