The Stealth 11 GPM Comet P40 Soft Wash Business Pack is a high-output commercial soft wash package built for contractors who need greater application speed, coverage, and reach from a professional gas-powered system. At its core is the new style Comet P40 gear-driven diaphragm pump, powered by a commercial Honda GX200 engine to deliver up to 11 GPM at 300 PSI.
The P40 is now mounted on Stealth's commercial aluminum skid platform, constructed from precision-cut 6061-T6 structural aluminum for strength, low weight, and corrosion resistance. Integrated vibration isolation, improved service access, a clean equipment layout, and laser-cut STEALTH branding create a purpose-built platform for installation on trailers, truck beds, and professional mobile wash rigs.
The Business Pack pairs that platform with the upgraded Stealth SP-1 1" Soft Wash Proportioner. Designed for high-flow soft wash systems, the SP-1 uses independent 1" water and SH metering circuits with dedicated check valves to help prevent mixed solution from backfeeding into individual supply lines. Its clear manifold block provides visibility into the solution path for easier troubleshooting, while included TerreMax hose barbs and plugs make the proportioner more complete and installation-ready.
On the discharge side, the package includes a Stealth 18" Aluminum Full Frame Hose Reel with a 3/4" stainless steel manifold, 200 feet of 5/8" I.D. Stealth Soft Wash Hose, and a WaterBoss 750 Soft Wash Gun. The larger hose and reel plumbing help reduce unnecessary restriction and friction loss across the high-flow system.
Rather than pairing an 11 GPM pump with undersized supporting components, the Stealth P40 Business Pack brings together the pump, engine, proportioning system, reel, hose, and applicator around the demands of professional high-flow soft washing.
⚠️ SHIPPING RESTRICTION: Due to state regulations, this equipment is restricted from sale and shipment to California.
Why Contractors Choose an 11 GPM Soft Wash System
Higher flow is one of the biggest productivity advantages of a gas-powered soft wash system. More solution volume allows contractors to apply chemical across large surfaces quickly, improve coverage, and achieve the reach needed for demanding residential and commercial work.
The Comet P40's 11 GPM output makes the system particularly well suited for roof and residential cleaning, multi-story siding, commercial buildings, and other high-production applications where lower-flow equipment can require more time and repositioning.
A high-flow pump, however, is only as effective as the equipment feeding and carrying its solution. That's why the Business Pack combines the P40 with a 1" SP-1 proportioner, 3/4" reel manifold, and 5/8" soft wash hose rather than treating the pump's GPM rating as the entire system.
Commercial Aluminum Stealth Skid
Every Stealth Sprayers machine is now built on a commercial aluminum skid platform. Constructed from precision-cut 6061-T6 structural aluminum, the skid provides exceptional strength while remaining lightweight and corrosion resistant.
Unlike generic mounting rails commonly found on commercial cleaning equipment, the Stealth skid is purpose-built for professional systems, featuring a clean layout, improved service access, integrated vibration isolation, and laser-cut STEALTH branding that gives the P40 a premium, professional appearance on trailers, truck beds, and mobile wash rigs.
Frequently Asked Questions
What is included in the Stealth P40 Soft Wash Business Pack?
The Business Pack combines the primary equipment needed for a professional high-flow soft wash setup: the Stealth P40 Soft Wash System with Comet P40 pump and Honda GX200 engine, Stealth SP-1 1" Proportioner, Stealth 18" Aluminum Full Frame Hose Reel, 200' of 5/8" I.D. Stealth Soft Wash Hose, and WaterBoss 750 Soft Wash Gun.
Final field plumbing between tanks and major system components depends on the contractor's installation and is not included unless specifically stated.
What does the Comet P40 deliver?
The gear-driven Comet P40 diaphragm pump delivers up to 11 GPM at 300 PSI, providing the combination of high solution volume and pressure used for professional gas-powered soft washing.
Does higher GPM improve soft washing performance?
Yes. Higher flow can increase application speed, improve coverage, assist with rinsing, and provide greater effective reach. This can significantly improve productivity on roofs, large homes, multi-story structures, and commercial properties.
Actual performance at the applicator depends on the complete system configuration, including hose length and diameter, plumbing, fittings, nozzle selection, and proportioner settings.
Why does the P40 Business Pack use a 1" proportioner?
The Comet P40 requires a high volume of solution on the suction side. The Stealth SP-1 uses 1" water and SH circuits and a 1" mixed-solution outlet to help minimize unnecessary restriction feeding the pump.
Undersized suction plumbing can restrict available flow and increase the risk of pump starvation or cavitation.
Why does the SP-1 have check valves?
Each water, SH, and surfactant circuit has its own one-way check valve immediately after the metering valve. These help prevent mixed solution from flowing backward through another supply circuit after the three inputs meet at the common manifold.
What is the advantage of the clear SP-1 manifold?
The clear manifold allows operators to see the mixed-solution path. If the suction side begins pulling air, bubbles may become visible inside the manifold and provide a useful visual indicator when troubleshooting potential leaks.
Can I adjust my bleach strength without batch mixing?
Yes. The SP-1 independently controls water, SH, and surfactant, allowing contractors to adjust their mixture at the proportioner as cleaning requirements change instead of preparing a separate fixed-strength batch.
Why does the Business Pack include 5/8" soft wash hose?
The included 5/8" I.D. hose provides a larger flow path than 1/2" hose, helping reduce friction loss over the 200-foot hose run. This makes 5/8" hose particularly well suited for high-output gas-powered soft wash systems like the P40.
Why does the hose reel use a 3/4" manifold?
The Stealth 18" reel's 3/4" stainless steel manifold provides a larger flow path than a standard 1/2" configuration, complementing the high-volume P40 system and 5/8" soft wash hose.
Is the Stealth P40 Business Pack good for roof cleaning?
Yes. The P40's high flow, adjustable chemical proportioning, 200-foot 5/8" hose, and high-volume applicator make the Business Pack well suited for professional roof cleaning, house washing, multi-story work, and large commercial exterior-cleaning applications.
Is field plumbing required?
Yes. Because tank location and equipment layout vary between trailers, truck beds, skids, and custom rigs, some final field plumbing is required.
This includes appropriately sized supply lines from the tanks to the SP-1, the P40 bypass/return plumbing, and the discharge connection between the pump and hose reel.
Stealth 11 GPM Soft Wash Business Pack | Features
Comet P40 Gear-Driven Diaphragm Pump
Delivers up to 11 GPM at 300 PSI for high-production professional soft washing.
Honda GX200 Commercial Engine
Provides dependable gas-powered operation without relying on the electrical system required by traditional 12V soft wash pumps.
6061-T6 Commercial Aluminum Stealth Skid
Precision-cut structural aluminum provides a strong, lightweight, corrosion-resistant foundation purpose-built for professional cleaning equipment.
Integrated Vibration Isolation
The Stealth skid incorporates vibration isolation to create a more refined mounting platform for the engine and pump assembly.
Improved Service Access
A clean equipment layout provides better access to major system components for routine inspection and maintenance.
Upgraded Stealth SP-1 1" Proportioner
High-flow water and SH circuits provide independent chemical control while supporting the solution demands of the P40.
Individual Proportioner Check Valves
A dedicated check valve after each metering valve helps prevent mixed solution from backfeeding into another supply circuit.
Clear SP-1 Manifold
Makes the mixed-solution path visible and provides an additional diagnostic point when troubleshooting suction-side air leaks.
Included TerreMax Fittings
Primary SP-1 hose barbs and plugs are included for a more complete proportioner assembly.
18" Stealth Aluminum Full Frame Hose Reel
Commercial aluminum construction provides a durable, corrosion-resistant hose-management platform.
3/4" Stainless Steel Reel Manifold
The larger stainless manifold supports the high-flow configuration while providing excellent corrosion resistance.
200' of 5/8" Stealth Soft Wash Hose
The larger 5/8" I.D. helps reduce friction loss over long hose runs compared with smaller-diameter soft wash hose.
Stainless Steel Hose Connections Included
The Business Pack includes the stainless steel hose barbs needed to connect the included 5/8" soft wash hose to the reel and applicator: a 3/4" x 5/8" stainless steel hose barb for the reel manifold-to-hose connection and a 5/8" x 1/2" stainless steel hose barb for the hose-to-WaterBoss 750 connection. Hose clamps are not included
WaterBoss 750 Soft Wash Gun
High-volume applicator selected for professional gas-powered soft wash systems.
Stealth 11 GPM Comet P40 Soft Wash Business Pack | Specifications
| Specification | Details |
| Brand | Stealth |
| Part Number | SW-PACK-1 |
| Series | Soft Flow |
| Product Type | Gas-Powered Soft Wash Business Pack |
| Soft Wash System | Stealth P40 Soft Wash System |
| Pump Brand / Model | Comet P40 |
| Pump type | Gear-Driven Diaphragm Pump |
| Maximum Flow | 11 GPM |
| Maximum Pressure | 300 PSI |
| Engine | Honda GX200 |
| Engine Start | Pull Start |
| Skid Material | 6061-T6 Structural Aluminum |
| Proportioner | Stealth 1" Soft Wash Proportioner, Clear Block w/ Fittings, 8+ GPM |
| Proportioner Size | 1" High-Flow |
| Water Metering Valve | 1" w/ 1" Hose Barb |
| SH Metering Valve | 1" w/ 1" Hose Barb |
| Surfactant Metering Valve | 1/2" w/ 1/4" Hose Barb |
| Proportioner Manifold | Clear Block |
| Proportioner Outlet | 1" Hose Barb |
| Hose Reel | Stealth 18" Aluminum Full Frame with 3/4" Stainless Steel Manifold & Swivel |
| Reel Manifold | 3/4" Stainless Steel |
| Soft Wash Hose | 200 feet Stealth 5/8" I.D. (Blue) |
| Hose Working Pressure | 300 PSI |
| Applicator | Waterboss 750 Soft Wash Gun, 12 GPM, 750 PSI |
| Reel-to-Hose Fitting | 3/4" x 5/8" Stainless Steel Hose Barb |
| Hose-to-Gun Fitting | 5/8" x 1/2" Stainless Steel Hose Barb |
Required Field Plumbing & Installation
The Stealth P40 Business Pack includes the major equipment needed for a professional high-flow soft wash system while allowing contractors to configure tank placement and final plumbing around their specific trailer, truck, or skid layout.
Suction & Intake Plumbing
Use appropriately sized, reinforced suction-rated hose between the supply tanks and SP-1 proportioner. The primary water and SH circuits use 1" connections, while the surfactant circuit uses its dedicated smaller connection.
All suction-side connections should remain airtight. Loose clamps, improperly sealed fittings, or damaged hose can allow air into the system and contribute to inconsistent solution supply or pump cavitation.
Bypass / Return Line
The Comet P40 is a positive-displacement diaphragm pump and requires the regulator's bypass/return circuit to be properly plumbed.
Pump-to-Reel Discharge Jumper
A properly rated, chemical-compatible discharge jumper is required between the P40 outlet and hose reel.
The jumper and fittings should be appropriately sized for the high-flow system and rated above the system's 300 PSI maximum operating pressure.
Recommended Applications
- Professional Roof Cleaning
- House Washing
- Multi-Story Exterior Cleaning
- Commercial Building Washing
- Apartment & Multi-Family Properties
- Property & Facility Maintenance
- High-Production Residential Cleaning
- Professional Soft Wash Trailers
- Truck & Flatbed Soft Wash Builds
- Custom Soft Wash Skids
- High-Flow Gas-Powered Soft Washing
