4000 PSI Pump

Perfect for professional pressure washing operators, this Comet ZWD series 4040 G pump delivers up to 4.0 GPM! It has a reversible crankshaft for easy right or left hand mounting with the direct drive flange. The crankcase is also reinforced to increase overall load capacity, and enlarged to offer more oil capacity and better lubrication at lower operating temperatures. 

This pump has a 1" diameter hollow shaft, 1/2" FPT inlet, and 3/8" outlet. It has stainless steel unitized check valves, heat-resistant solid ceramic plungers, and one-piece industrial-grade oversized bronze connecting rods.

• Direct drive gas engine mounting flange
• Reversible crankshaft
• Inlet: 1/2" FPT
• Outlet: 3/8" 
• Maximum flow: 4.0 GPM
• Maximum pressure: 4000 PSI
• Maximum speed: 3400 RPM
• Shaft: 1" hollow SAE J609B
• 15mm piston
• Increased fin depth
• Stainless steel unitized check valves
• Heat-resistant solid ceramic plungers with lubricated packings
• Direct drive mounting flange
• Reinforced crankcase
• 14 oz. crankcase capacity 
• Aluminum connecting rod
• Part of the ZWD series
• Comet item # 6305.0900.00
• Weight: 17.5 lbs.