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APS PartsSKU: 100775

Downstream Fixed 20% 3 – 5 GPM Chemical Draw Injector - Body

$21.95

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Overview

This is a downstream chemical draw injector body with a fixed 20% draw rate, sized for pressure washers flowing 3–5 GPM and rated to 4500 PSI maximum. Because it injects chemical into the water stream after the pump, soap and cleaning chemicals never pass through your pump internals — that protects the pump and opens up a wider choice of chemicals than upstream injection allows. It draws at low pressure: switch to a soap nozzle — a short-range black tip or a long-range blue tip in size 40.0 — and the injector starts pulling chemical. Heavy-duty construction holds up to daily use. Note this listing is the injector body itself.

What's included

  • Fixed 20% chemical draw rate for 3–5 GPM pressure washers
  • Rated to 4500 PSI maximum
  • Downstream design — chemical never runs through the pump
  • Allows a wider choice of cleaning chemicals than upstream injection
  • Applies soap at low pressure with a short-range black tip or long-range blue tip (size 40.0)
  • Heavy-duty, durable construction
  • Injector body only

Specifications

Type
Downstream chemical draw injector (body)
Draw Rate
Fixed 20%
Flow Range
3–5 GPM
Max Pressure
4,500 PSI
Soap Nozzle
Short-range black tip or long-range blue tip, size 40.0

Frequently asked questions

It fits pressure washers flowing 3 to 5 GPM at up to 4,500 PSI. Downstream injectors are flow-matched, so if your machine's GPM falls outside that range the injector won't draw chemical reliably — check your pump's rated output before ordering.

A downstream injector adds chemical to the water after the pump, so the chemical never runs through the pump itself. That protects your pump from chemical wear and lets you run a wider choice of cleaning chemicals than an upstream setup allows.

Switch to a low-pressure soap nozzle and the injector will begin pulling chemical. Use a short-range black spray tip or a long-range blue tip in size 40.0 — at high pressure with a standard nozzle, the injector stops drawing so you can rinse.

The injector meters chemical into the water stream at a set 20% ratio that is not adjustable. If you need a weaker mix, pre-dilute the chemical in your supply container rather than adjusting the injector.

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