Comet ZWD4040P Pressure Washer Pump Package – ZWD4040G-VRT3-310EZ w/ Bypass & Thermal Relief – 4.0 GPM @ 4000 PSI
Part Number: ZWD4040P Package (ZWD4040G-VRT3-310EZ)
Category: Pressure Washer Pumps → Pump Packages → Fully Plumbed Pump Assemblies
Type: Comet ZWD4040P Pressure Washer Pump Package
The Comet ZWD4040P Pressure Washer Pump Package is a professional-grade, ready-to-install pressure washer pump assembly built around the proven Comet ZWD4040G triplex plunger pump. Designed for commercial pressure washing contractors, fleet maintenance operations, agricultural cleaning systems, equipment washing, and industrial maintenance applications, this package combines powerful cleaning performance with simplified installation and integrated pump protection.
Key Features & Benefits
- Genuine Comet ZWD4040P Pressure Washer Pump Package
- Built around the Comet ZWD4040G triplex pump
- Produces up to 4.0 GPM
- Rated for 4000 PSI
- Includes VRT3-310EZ pressure regulating bypass unloader
- Includes thermal relief valve
- Direct-drive gas engine configuration
- Ceramic plungers
- Heavy-duty brass manifold
- Ready-to-install pump package
- Simplifies installation and replacement
- Commercial-duty construction
- Designed for professional pressure washing systems
Package Components
Included Pump
Comet ZWD4040G Triplex Plunger Pump
- Triplex plunger design
- Direct-drive configuration
- Ceramic plungers
- Brass manifold
- Commercial-duty construction
Included Unloader
Comet VRT3-310EZ Pressure Regulating Bypass Unloader
- Adjustable pressure regulation
- Integrated bypass operation
- Helps protect pump components
- Designed for professional pressure washer systems
Included Protection Component
Thermal Relief Valve
- Helps prevent overheating during bypass operation
- Improves pump protection and longevity
- Supports safer operation
Technical Specifications
Manufacturer: Comet
Package Model: ZWD4040P
Pump Model: ZWD4040G
Unloader Model: VRT3-310EZ
Pump Type: Triplex Plunger Pump
Maximum Flow Rate: 4.0 GPM
Maximum Pressure: 4000 PSI
Maximum Pump Speed: 3450 RPM
Shaft Size: 1" Hollow Shaft
Drive Type: Direct Drive
Plunger Material: Ceramic
Manifold Material: Brass
Maximum Inlet Temperature: 140°F (60°C)
Oil Capacity: 14 oz
Recommended Oil: 30W Non-Detergent Pump Oil
Included Thermal Relief Valve: Yes
Included Bypass Unloader: Yes
Typical Applications
- Commercial pressure washer systems
- Fleet washing operations
- Heavy equipment cleaning
- Agricultural cleaning
- Construction equipment maintenance
- Property maintenance services
- Contractor pressure washing rigs
- Mobile wash trailers
- Industrial cleaning systems
- Pressure washer pump replacement
- OEM pressure washer manufacturing
Performance Advantages
- Delivers 4.0 GPM at 4000 PSI for powerful professional cleaning performance
- Complete package reduces installation complexity and setup time
- Triplex plunger design provides smooth operation and reduced pulsation
- Ceramic plungers improve wear resistance and service life
- Brass manifold offers superior durability and corrosion resistance
- Included VRT3-310EZ unloader provides precise pressure regulation and bypass protection
- Thermal relief valve helps protect the pump during extended bypass operation
- Direct-drive configuration simplifies engine mounting and installation
- Compatible with common 1-inch hollow shaft gasoline engines
- Ideal for commercial, agricultural, industrial, and contractor-grade cleaning applications
- Built with Comet's trusted professional-grade engineering for dependable long-term performance
