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APS PartsSKU: ACI205

Downstream Fixed 10% 3 – 5 GPM Chemical Draw Injector - Assy

$36.95

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Overview

This is a downstream chemical injector assembly with a fixed 10% draw ratio, built for pressure washers flowing 3-5 GPM and rated to 4500 PSI maximum. It quick-connects after the pump, ahead of your 3/8" high-pressure hose, and pulls soap or chemical into the water stream at low pressure — the chemical never runs through the pump, which protects your seals and lets you use a wider range of chemicals. The assembly includes 4 feet of draw hose with a strainer. To apply soap, run a size 40.0 soap nozzle: black for short range or blue for long range. Note the flow-direction arrow — if the injector arrives plumbed backwards for your setup, swap the fittings so the arrow points downstream, away from the machine.

What's included

  • Fixed 10% chemical draw ratio
  • Sized for 3-5 GPM machines, 4500 PSI maximum
  • Quick-connects after the pump, before the 3/8" high-pressure hose
  • Chemical bypasses the pump — wider chemical choice, no pump exposure
  • Includes 4 ft of draw hose with strainer
  • Applies soap at low pressure with a size 40.0 nozzle (black short-range or blue long-range)
  • Durable, long-lasting construction

Specifications

Type
Downstream chemical injector, fixed draw
Dilution Ratio
Fixed 10%
Flow Range
3-5 GPM
Max Pressure
4500 PSI
Hose Length
4 ft draw hose with strainer
Connection
Quick-connect after pump, before 3/8" high-pressure hose
Soap Nozzle Size
40.0 (black short-range or blue long-range)

Frequently asked questions

It fits pressure washers flowing 3-5 GPM at up to 4500 PSI. It quick-connects downstream of the pump, before your 3/8" high-pressure hose, so the injector only sees flow after the pump — match your machine's GPM to the 3-5 GPM range and you're set.

Use a size 40.0 soap nozzle — black for short-range spraying or blue for long-range. A downstream injector only draws chemical at low pressure, so the large-orifice soap tip is what drops the pressure and starts the siphon; it won't draw through your high-pressure tips.

First check the flow direction — this injector may arrive plumbed backwards for your setup. Swap the fittings so the flow arrow points downstream, away from the machine. Also confirm you're using a size 40.0 soap nozzle, since the injector won't siphon at high pressure.

No. Because this is a downstream injector, chemical enters the line after the pump, so soaps and cleaners never touch your pump internals. That protects the pump and allows a wider choice of chemicals than upstream injection.

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