I’ve been thinking about building up a trailer when I get one hopefully soon and wanted to add a softwash system. The costs seem pretty high, and with many threads about how to actually do the pump and hose and accumulator and even DIY PVC soft wash wands, I’ve been thinking about doing my own proportioner as well. I do electrical design for water and chemical process systems and my mechanical coworkers work every day with a massive plumbing supplier (Ryan Herco and GF) who bring us donuts and other goodies because we buy from them so much so I think I could probably get access to the right parts pretty easily, and possibly at a hefty discount. The Proportioner is even using GF ball valves lol. We also order heavily from Automation Direct for some parts also, so I think I could get a decent discount on any size poly control box or junction box with hinged lid. They are chemical resistant (we have to use them on our plating lines and chemical process lines), they are fully weather sealed and most are NEMA 12/4X rated (I dont remember all the ratings meanings, but I know they can be permanently mounted outdoors just fine).
I made this little chart for what I believe the mix ratios and percentages would be with a bleach and water ball valve by fully opening the water and adjusting the bleach ball valves to different percentages of “open.” 0% open would be 0 degrees rotation, 50% open is 90 degrees rotation, 100% open is 180 degrees rotation.
Let me know what you guys think or if the ratios don’t look right to you.
I verified against Paul’s video (power wash store) below. He cracks the valve for bleach open to what he calls “around 45 degrees” for a 10% mix. If you look at my chart, "around 45 degrees is about 20-25% open which is between 10-12% mix strength, so I think I’ve got the ratios right.
Adding in the soap mix would be a simple drip essentially, and Paul shows that by hardly even cracking the soap valve open, plus the soap supply hose would be smaller diameter than the bleach and water hoses.
I love the idea of the proportioner, but the price seems outrageous to me for what it actually is in material. Anyway, I may soon start getting some quotes on parts in the next few weeks (maybe months lol) and seeing what I’d end up at doing it myself.
I appreciate any feedback!