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Hey guys, I have been fighting a small pulsation problem in 1 of my self serve bays for a week or 2 now. The rundown here is that the pump is a Hawk brand HC500 which I believe is similar to a hotsy pump. It is belt drive running about 980rpm, 1400psi thru a 05 tip with hot water, less when...

I recently purchased a small self serve, and Im slowly starting to understand how this thing operates mechanically. I am curious how do I know what ratio I am ACTUALLY running out of the gun? The soap I am using is warsaw chemical brand and they supply me with a range of ratios to run. But how...