Downstream Injector Check Valve
For about the last eight months to a year I have been using a Downstream Injector Check Valve for Soft Washing. These not only help the injectors last longer, since we are removing the ball and spring, but they also actually make the mix a little stronger. We have been able to clean some porous surfaces that have the black algae stains on them, a little faster than using the injectors how they come. They are available on my store HERE .
Very easy to install, you simply remove the hose barb from the Downstream Injector. Then you remove the ball and spring, which will pop out anyway. Attache the check valve where the hose barb was, and you are ready to attach your hose and start downstreaming.
For the last few years there has has been a lot of mis-information about what soft washing is and isn’t. As long as y9u are using low pressure to apply your chemical mix, and rinsing under low pressure, you are Soft Washing. The use of a dedicated pump does not dictate that you are soft washing. Downstreaming is the original soft wash method that I was taught to use way back in 1979.
While a dedicated pump will allow you to apply a stronger mix than downstreaming, just like a pump up sprayer will. In fact, thats all a dedicated pump is, a pump up sprayer on steroids. If you want to clean buildings and houses faster, then using a downstream injector check valve is the way to go. Your mix will be much stronger than a traditional injector.
I always encourage people starting a pressure washing business, to learn how to downstream first. This will help you learn to clean in a traditional way, and help prevent damage to landscape.