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APS PartsSKU: 100821

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

$21.95

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Overview

This is the body for a downstream fixed-rate chemical injector, sized for pressure washers flowing 3-5 GPM and rated to a 4500 PSI maximum. It draws chemical at a fixed 10% dilution ratio and injects it after the pump, so soap and cleaning chemicals never pass through your pump — that protects the pump and lets you run a wider range of chemicals, including harsher solutions. Chemical draws when you apply soap at low pressure using a black short-range soap tip or a blue long-range tip (size 40.0). It's a durable, heavy-duty way to add soap capability to a machine in the 3-5 GPM class, or to replace a worn injector body on your existing setup.

What's included

  • Fixed 10% chemical dilution ratio
  • Sized for 3-5 GPM pressure washers
  • 4500 PSI maximum pressure rating
  • Downstream design — chemical never runs through the pump
  • Allows a wider choice of chemicals
  • Works with a black short-range soap tip or blue long-range tip (size 40.0)
  • Heavy-duty construction for long service life

Specifications

Type
Downstream chemical draw injector (body)
Flow Range
3-5 GPM
Max Pressure
4500 PSI
Dilution Ratio
Fixed 10%
Compatible Soap Tips
Black short-range or blue long-range (size 40.0)

Frequently asked questions

Downstream means the injector pulls chemical into the water stream after the pump, so soap never runs through the pump itself. That protects the pump from chemical damage and lets you use a wider choice of chemicals than an upstream setup.

It fits pressure washers flowing 3-5 GPM with a maximum of 4500 PSI. Match your machine's GPM to the injector's range — flow outside 3-5 GPM won't draw chemical correctly. If you're not sure of your machine's output, check the pump or spec plate before ordering.

Apply soap at low pressure using a soap nozzle — either a black short-range tip or a blue long-range tip in size 40.0. A downstream injector only pulls chemical when the large soap orifice drops the system pressure; it stops drawing when you switch back to a high-pressure tip.

No — this injector draws at a fixed 10% dilution ratio. If you need a different soap concentration, adjust the strength of the chemical mix in your downstream container rather than the injector itself.

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