That era of Hydrospay equipment utilized the booster pump for circulating heated pre-soak to the roof-top plumbing trough. Each bay’s PS solenoid was teed in the circulating loop, above the bay. The concept is to use the heated PS to keep the trough warm. It’s a pain-in-the-neck to maintain/service the solenoids & CHECK VALVES.
Similar to 2Biz's, our installations feature
FloJet pumps for all low-pressure products (PS, Tire, Bug Juice, MagChloride, Tri-foam) all delivered thru a foam gun. NO CHECK VALVES living in the roof trough!
For simplicity, we provide warm water only to the HP pumps…yes, warm soap, wax, and rinse. Everything is gravity fed with 1/2" hoses to the pump inlets. NO CHECK VALVES, Zero Pressure Regulators, throttling valves, or solenoid valves required! One water tank, one soap tank, and one wax tank.
For SFR, I’m a firm believer in medium pressure delivery…400-500psi. This is accomplished with a high-volume Cat 390/5hp motor. Or, by using the existing HP pumps equipped with HP bypass solenoid valves and regulators. Both systems use the existing HP plumbing to the bays. (the latter requires NO CHECK VALVES!)
Here’s a view of our typical pump plumbing…simple and easy to service!
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Here’s a look at the same pump equipped with dual pressure controls for 400-500psi SFR delivery. This modification replaced a wimpy multi-stage repressurization pump system that customers rarely used.
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