COMET RW Series Pump


Introducing the COMET RW Series Pump, a high-performance Comet Triplex Pressure Washer Pump Assembly, the RW4040S and RW5535S. These powerful pumps provide maximum rated pressures of 3500 PSI and 4.0 GPM, and 3500 PSI and 5.5 GPM respectively.


COMET RW SERIES Pump 3500/4000 PSI – 4 to 5.5GPM – 24MM Shaft

Introducing our high-performance Comet Triplex Pressure Wash Pump Assemblies, the RW4040S and RW5535S. These premium products are designed to elevate your pressure washing capabilities, allowing you to tackle demanding cleaning tasks with professional-grade efficiency.

Our Comet RW4040S pump assembly is power-packed, offering a maximum rated pressure of 3500 PSI and 4.0 GPM at 1450rpm. It runs optimally with an 11Hp Electric (14.5hp gas) setup, ensuring a powerful and reliable cleaning performance. This model features a 24mm solid shaft, a 1/2″ female NPT inlet, and a 3/8″ female NPT outlet for easy setup and compatibility.

Stepping up the game, our Comet RW5535S pump assembly boasts an impressive maximum rated pressure of 3500 PSI and 5.5 GPM at 1450rpm, making it an ideal choice for more intensive cleaning tasks. It requires a 13Hp Electric (19hp gas) for achieving maximum pressure and features the same convenient setup specifications as the RW4040S.

Both pump assemblies are designed with your safety in mind. Please do not install these pumps without an unloader and/or pressure regulator, and we highly recommend professional installation to ensure optimal operation and longevity of the pumps.

Whether you’re handling everyday cleanup or tackling tougher grime, our Comet RW4040S and RW5535S pressure wash pump assemblies are the reliable choices for all your pressure washing needs. With superior performance, easy operation, and professional-grade power, they’re designed to deliver unparalleled cleaning effectiveness​.

Additional information

Weight 25 lbs
Dimensions 15 × 14 × 10 in

RW4040S, RW5535S