The Stealth 1" Soft Wash Proportioner is a commercial-grade chemical mixing system designed for high-output soft wash systems running 8+ GPM, where maintaining adequate solution supply and minimizing inlet restriction are critical. Built for gas-powered soft wash systems, it gives contractors independent control over water, sodium hypochlorite (SH), and surfactant while allowing solution strength to be changed on demand without batch mixing.
High-flow plumbing is built into the system from the start. Both the water and chemical circuits use 1" precision metering valves with 1" hose barbs, while a dedicated 1/2" surfactant metering valve with 1/4" hose barb provides finer soap control. The three circuits combine through a clear manifold before exiting through a 1" hose barb, maintaining a large solution path to the pump.
But flow capacity is only part of the design. Each supply circuit incorporates a commercial-grade check valve directly after its metering valve. These one-way valves help prevent mixed solution from backfeeding through the individual water, SH, or surfactant lines after they meet at the common manifold.
The upgraded clear manifold provides direct visibility into the solution path, giving operators another tool when troubleshooting their system. Air entering the suction side can become visible as it passes through the manifold, helping contractors identify potential air leaks that would be hidden inside an opaque block.
The proportioner also comes equipped with the necessary TerreMax hose barbs and plugs, providing heavy-duty, chemical-resistant connections without requiring contractors to source the primary fittings separately.
The result is more than three valves connected to a manifold. The Stealth 1" Proportioner is built as a high-flow, backflow-protected, visually serviceable proportioning system for professional soft wash equipment and chemical mixing spraying applications.
Built for High-Flow Soft Wash Systems
As soft wash pump output increases, the plumbing supplying the pump becomes increasingly important. A high-output pump can only move the solution it can receive.
An undersized proportioner, hose, valve, fitting, or other restriction on the suction side can limit solution supply and contribute to reduced performance, pump starvation, or cavitation.
The Stealth 1" Proportioner is designed around 8+ GPM systems, using 1" water and SH circuits, high-flow connections, and a 1" mixed-solution outlet to help minimize unnecessary restriction before the pump.
This makes it particularly well suited for high-flow gas-powered soft wash pumps such as the Comet P40 and AR45, where properly sized inlet plumbing is essential to maintaining adequate solution supply and system performance.
Why Check Valves Matter on a Soft Wash Proportioner
A proportioner starts with three separate supply circuits but ultimately combines them into one mixed solution. Once those fluids meet, you want the solution moving toward the pump, not finding a path backward through another supply line.
The Stealth 1" Proportioner places a dedicated commercial-grade check valve after each metering valve and before the common manifold. These one-way valves help prevent mixed solution from backfeeding into the individual water, bleach, or surfactant circuits.
This helps isolate each supply line and maintain controlled, one-way flow through the proportioning system.
The check valves use stainless steel Hastelloy springs and are selected for demanding professional chemical-handling environments.
Clear Manifold for Visual Troubleshooting
The clear manifold isn't just an appearance upgrade. It gives operators visibility into the mixed-solution path.
Suction-side air leaks can affect the performance of a soft wash system and can sometimes be difficult to locate across multiple hoses, fittings, valves, and connections. With a clear manifold, air entering the system can become visible as it reaches the proportioner, providing a useful visual indicator during troubleshooting.
For contractors who maintain and troubleshoot their own equipment, being able to see what's happening inside the solution path provides an advantage over a completely opaque manifold.
Complete with TerreMax Hose Connections
The Stealth 1" Proportioner includes the necessary TerreMax hose barbs and plugs for its primary connections, eliminating the need to purchase a proportioner and then separately source the basic fittings required to connect it.
TerreMax fittings use heavy-duty polymer construction developed for demanding agricultural and commercial fluid-handling environments, providing chemical and weather resistance while keeping the fluid path free from unnecessary metal components.
Frequently Asked Questions
What does a soft wash proportioner do?
A soft wash proportioner allows contractors to independently control water, bleach, and surfactant before the solution reaches the pump.
Instead of preparing a fixed-strength batch in a tank, the operator can adjust the individual metering valves to change the cleaning mixture for different surfaces and applications.
What size proportioner do I need for a soft wash system?
Proportioner size should be matched to the flow requirements of the pump and the rest of the inlet plumbing.
The Stealth 1" Soft Wash Proportioner is designed for high-output systems running 8+ GPM, where larger plumbing helps minimize inlet restriction and maintain adequate solution supply to the pump. Lower-flow systems may be better matched to smaller Stealth proportioner configurations.
What happens if a soft wash proportioner is too small?
An undersized proportioner can create unnecessary restriction on the suction side of the system. If the pump demands more solution than the plumbing can efficiently supply, system performance can suffer and the risk of pump starvation or cavitation can increase.
Properly sizing the proportioner, supply hose, fittings, and surrounding plumbing helps the pump receive the volume it needs.
Is the Stealth 1" Proportioner compatible with Comet P40 and AR45 soft wash pumps?
Yes. The Stealth 1" Proportioner is an excellent match for high-flow gas-powered soft wash systems using pumps such as the Comet P40 and AR45. Its 1" water and SH circuits, individual check valves, and 1" mixed-solution outlet provide the high-flow supply path these professional pump systems require.
Why is the surfactant valve smaller than the water and bleach valves?
Surfactant is normally introduced at a much lower volume than water or bleach. The dedicated 1/2" surfactant metering valve provides finer control over soap while allowing the primary water and SH circuits to retain their larger 1" flow paths.
Can I change my bleach strength without batch mixing?
Yes. Water, SH, and surfactant are independently controlled through their respective metering valves. Contractors can adjust the proportioner to change the solution mixture as the application requires rather than preparing a new fixed-strength batch.
Does the Stealth 1" Proportioner include hose barbs?
Yes. The proportioner includes the necessary TerreMax hose barbs and plugs for its primary connections.
Water and SH use 1" hose barbs, surfactant uses a 1/2" x 1/4" hose barb, and the mixed-solution outlet uses a 1" hose barb
1" High-Flow Water & Chemical Circuits
Dedicated 1" water and SH metering valves and connections provide the large primary flow paths needed for high-output soft wash systems.
Individual Check Valves on Every Supply Circuit
Commercial-grade check valves positioned after each metering valve help prevent mixed solution from backfeeding into the individual water, SH, and surfactant supply lines.
Clear Manifold Block
Provides visibility into the mixed-solution path and can help operators identify air entering the system while troubleshooting suction-side leaks.
Included TerreMax Hose Barbs & Plugs
The necessary hose barbs and plugs are included, providing durable, chemical-resistant connections without requiring the primary fittings to be purchased separately.
Independent Water, SH & Surfactant Control
Three independently adjustable metering valves allow contractors to control the cleaning mixture and change solution strength for different applications.
1" Mixed-Solution Outlet
A 1" hose-barb outlet maintains the high-flow architecture from the proportioner into the pump supply line.
Precision 30° V-Bore Metering Valves
Precision-dial 30° V-bore valves provide controlled adjustment of the individual water, SH, and surfactant inputs.
Dedicated 1/2" Surfactant Control
The smaller surfactant circuit provides finer soap adjustment without unnecessarily restricting the high-volume water and chemical circuits.
Viton Seals
Chemical-resistant Viton seals are selected for the demanding environment of professional soft wash systems.
True-Union Serviceability
True-union connections make it easier to remove and service individual components without unnecessarily rebuilding surrounding plumbing.
Chemical-Resistant Construction
CPVC, polypropylene, UHMWPE, Viton, and heavy-duty polymer fittings provide a durable fluid-handling platform for repeated professional soft wash use.
| Specifications | Details |
| Brand | Stealth |
| Part Number | SP-1 |
| Product Type | Soft Wash Proportioner |
| Recommended System Flow | 8+ GPM |
| Recommended System Type | High-Flow / Gas-Powered Soft Wash Systems |
| Inlets | Water, Sodium Hypochlorite (SH), Surfactant |
| Water Metering Valve | 1" FPT |
| Water Connection | 1" Hose Barb |
| Chemical / SH Metering Valve | 1" FPT |
| Chemical / SH Connection | 1" Hose Barb |
| Surfactant Metering Valve | 1/2" |
| Surfactant Connection | 1/2" x 1/4" Hose Barb |
| Outlet Connection | 1" Hose Barb |
| Valve Material | CPVC |
| Valve Type | 30 V-Bore with Precision Dial |
| Seal Material | Viton |
| Check Valves | Individual Check Valve After Each Metering Valve |
| Check Valve Spring | Stainless steel Hastelloy |
| Manifold | Clear Block |
What's Included
- Stealth 1" Soft Wash Proportioner Assembly
- Clear Manifold Block
- (2) 1" Metering Valves for Water & SH
- (1) 1/2" Metering Valve for Surfactant
- Individual Commercial-Grade Check Valves
- (2) 1" TerreMax Inlet Hose Barbs
- (1) 1/2" x 1/4" TerreMax Surfactant Hose Barb
- (1) 1" TerreMax Outlet Hose Barb
- Necessary TerreMax Plugs
How to Use a Soft Wash Proportioner
- Connect the water, SH, and surfactant supply hoses to their designated hose barbs.
- Connect the 1" outlet to the pump supply line.
- Adjust the individual metering valves to establish the desired solution mixture.
- Operate the system and fine-tune the mixture for the cleaning application.
- Change valve settings as needed when moving between surfaces or applications requiring different solution strengths.
- Follow appropriate flushing procedures after chemical use.
Recommended Applications
- 8+ GPM Soft Wash Systems
- Gas-Powered Soft Wash Systems
- Comet P40 Soft Wash Systems
- High-Flow Soft Wash Skids
- Soft Wash Trailers
- Professional Roof Cleaning
- Residential Exterior Cleaning
- Commercial Exterior Cleaning
- Multi-Story Cleaning
- Building & Facility Cleaning
- High-Production Soft Washing
- Professional Soft Wash Rig Builds
