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APS PartsSKU: ACI791

Downstream Fixed 20% Draw 5 – 8 GPM Chemical Dual Barb Injector - Assy ACI791

$59.95

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Overview

The ACI791 is a fixed 20% high-draw downstream chemical injector assembly for pressure washers running 5–8 GPM, rated to 4500 PSI maximum. It installs after the pump and before your 3/8" high-pressure hose, pulling soap at low pressure so chemical never runs through the pump — which protects your pump seals and lets you use a wider range of chemicals. The dual barb brass inlet feeds from two included 4-foot hoses with strainers, and the fixed 20% ratio gives you strong, consistent draw without adjustment. Spray soap through a size 40.0 nozzle — black tip for short range or blue tip for long range. Quick-connect fittings make it easy to snap on and off between jobs.

What's included

  • Fixed 20% dilution ratio for strong, consistent chemical draw
  • Sized for 5–8 GPM machines, 4500 PSI maximum
  • Downstream design — chemical never runs through the pump
  • Dual barb brass inlet
  • Includes two 4-foot chemical hoses with strainers
  • Quick-connect install after the pump, before the 3/8" high-pressure hose
  • Heavy-duty construction for long service life

Specifications

Type
Downstream chemical injector, high draw
Flow Range
5–8 GPM
Max Pressure
4500 PSI
Draw Ratio
Fixed 20%
Inlet
Dual barb, brass
Included Hoses
Two 4 ft chemical hoses with strainers
Soap Nozzle Size
40.0 (black short-range or blue long-range tip)
Installation Point
After the pump, before the 3/8" high-pressure hose

Frequently asked questions

It fits machines flowing 5–8 GPM at up to 4500 PSI. If your pump is outside that flow range, the draw ratio will be off — choose an injector sized to your GPM. It connects downstream: after the pump, before the 3/8" high-pressure hose.

The injector pulls chemical at a set 20% ratio that cannot be adjusted — roughly one part chemical to five parts water. This is a high-draw rate, useful when you need strong soap concentration, such as house washing or degreasing. If you need less concentration, dilute the chemical in your supply container.

Simply swap the fittings around on the injector so the flow-rate arrow points downstream, away from your machine. Injectors may ship plumbed in either orientation, so check the arrow direction before your first use.

Use a size 40.0 soap nozzle — a black tip for short-range spraying or a blue tip for long range. Downstream injectors only draw chemical at low pressure, so the large-orifice soap nozzle is required for the injector to pull soap.

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