Comet P40 Soft Wash Pump

The Comet P40 Soft Wash Pump is a high-performance, three-diaphragm pump built for low-pressure, high-flow applications. It handles up to 11 GPM at 300 PSI and includes a ¾” solid shaft gearbox for reliable power transfer. Designed for soft washing, this pump features Desmopan diaphragms, a fully adjustable pressure regulator, and a corrosion-resistant polypropylene body.

To reduce leak points and simplify maintenance, the pump includes a centralized inlet, self-priming functionality, and a visible oil cup. It performs efficiently with sodium hypochlorite and is well-suited for exterior cleaning jobs that demand steady flow and chemical resistance.

Key Features:

• 2025 Upgraded Design
  Reduces leak points, improved flow, and option to add a pressure gauge.
• Chemical Resistant Diaphragms
  Includes three Desmopan diaphragms for enhanced resistance to sodium hypochlorite and other common soft wash chemicals.
• Adjustable Pressure Regulator
  Comes with a built-in regulator that allows easy adjustment of spray pressure across different applications.
• Self-Priming Capabilities
  Starts up without the need for manual filling, making job setup faster and easier.
• Durable Polypropylene Construction
  Resists corrosion caused by bleach-heavy environments, supporting longer pump life.
• Included ¾″ Solid Shaft Gearbox
  Supports reliable power transfer from your motor or engine to the pump.

• Pump Motor Rating
  Commonly paired with a Honda GX200 Engine

• Inlet and Outlet Size
  1″ inlet and ½” outlet to support standard soft wash system setups with a 3/4″ bypass.

• Pressure Gauge Port Included
  Comes with a built-in port so you can easily add a pressure gauge to monitor system pressure.

***PRESSURE GAUGE NOT INCLUDED***

This Comet P40 Soft Wash Pump comes newly upgraded and delivers improved performance in the field. First, the design replaces the old multi-part manifold with a solid one-piece build. This change reduces leaks and increases durability. Next, the upgraded regulator uses a diaphragm system instead of a piston, which provides smoother pressure control and minimizes internal wear. Additionally, the repositioned suction fitting improves water flow and boosts efficiency during longer jobs. This updated model also includes a pressure gauge port. This feature lets you fine-tune your setup and troubleshoot with ease. Overall, the new P40 runs more reliably, requires less maintenance, and meets the demands of today’s soft wash professionals.