A soft wash proportioner combines water, chlorine, and surfactant (soap), creating a soft wash mix that is then sprayed through a soft wash pump. The mixture is proportioned using metering valves on each of the input lines to adjust the flow to desired ratios, allowing you to dial in your soft wash mix % depending on the surface you are cleaning.
To build a soft wash proportioner you will need the following items:
1 x Manifold Block
3 x Check Valves
3 x Metering Valves
1 x Roll of Thread Tape or Thread Sealer
(Optional) Channellock Pliers for tightening
Here’s your step-by-step guide:
Begin by inspecting your manifold block to make sure there’s no plastic debris inside or hanging off of your threads. Loose debris can eventually clog your pump or spray gun.
Next, inspect your check valves and find the flow direction. Each check valve lets fluid move in one direction and blocks backflow. Most of the time, you’ll find an arrow on the side showing which way it flows.
We recommend wrapping each check valve 3 to 4 times using our FREE Thread Tape. This helps you get a secure, leak-free fit. You can also use a thread lock sealer, which seals and locks your check valves once you tighten them to the manifold block.
After wrapping, gently insert the check valves into the manifold block. Make sure the arrows point toward the block. Don’t tighten them fully yet, just get them started.
(Warning: Go slow when starting the first couple of threads. Inserting them at the wrong angle can cross-thread and damage the parts.)
Once all three check valves are loosely in place, start attaching the metering valves and tightening everything.
Begin with the middle valve. Gently align and thread the metering valve onto the check valve. As you tighten it, the check valve also tightens into the manifold block. That’s why you keep them loose at first so all parts tighten evenly.
To get a good fit, you might need to tighten the union nut (if using true union metering valves) as you tighten the metering valve. Use Channellocks if needed. When the center valve feels secure and the dial lines up with the block, repeat the same process with the other two.
After you complete all the steps, your finished product should look something like this:
You can buy all of these components on our website and build your own soft wash proportioner.
If your time is better spent elsewhere you can always purchase our completely built proportioners which are very reasonably priced and include a FREE starter bundle with Soft Wash Respirator, Hose Fittings, and Thread Tape.
Free shipping on orders of $100+ or more*
If you have any questions, call Collin at (561) 314-0761
More Resources
You can also check out some related articles below!
What is a Softwash Proportioner and How is it Used?
Essential Soft Washing Tools
