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Glossary

Downstreaming

Definition

Downstreaming is drawing cleaning chemical into the water stream after the pump, using a downstream injector, so the diluted solution sprays through the pressure-washer hose.

Because the chemical is pulled in after the pump, it never passes through the pump itself, which protects the seals from harsh solutions like sodium hypochlorite. The flowing water dilutes the concentrate at a fixed ratio set by the injector and nozzle.

Downstreaming is the standard way to apply house-wash mix at low pressure. The trade-off is that you cannot dial the ratio precisely on the fly - the injector and tip size decide it - so many operators carry an X-Jet or a dedicated soft-wash pump when they need a stronger, more controlled mix.

Part of the WashRoute Pro pressure washing glossary - 43 terms and counting.

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