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Brass chemical injector with 3/8 inch BSP connection

Dayton

Dayton 1MCZ9 Chemical Injector 3/8 in 4000 psi 5.5 gpm

SKU CH-0QPS-90WAY

Brass adjustable chemical injector rated for 4000 psi and 5.5 gpm flow with 3/8 in BSP discharge

  • TypeDrain Components
  • Adjustable injection dials in precise chemical ratios
  • Brass body resists corrosion at 4000 psi pressure
  • 5 gpm flow handles heavy-duty drain cleaning
  • 3/8 in BSP discharge fits compatible AR North America units
  • Works with Grainger models 1MCX7 through 1WXW9

Adjustable Brass Chemical Injector

This Dayton 1MCZ9 chemical injector is built for pressure-washing systems that need on-the-fly detergent metering. The brass body and adjustable design suit professional cleaners and maintenance crews who require reliable chemical mixing at the point of use. It connects directly to compatible pump outlets for immediate operation.

4000 psi and 5.5 gpm Limits

The injector handles a maximum discharge pressure of 4000 psi and a maximum flow rate of 5.5 gpm. Exceeding either limit can damage the internal metering mechanism or cause inconsistent dilution ratios. The 3/8 in BSP discharge connection must match the downstream hose or lance fitting to maintain a leak-free seal.

Replaces Fixed-Ratio Injectors

This unit replaces non-adjustable injectors that lock you into a single dilution ratio, forcing nozzle changes for different chemicals. The upgrade is worth it when jobs shift between heavy degreasing and light rinsing, letting you dial the mix without swapping hardware. It is not for systems that exceed the rated pressure or flow, or for setups requiring a different thread standard.

Highlights

  • Adjustable injection dials in precise chemical ratios
  • Brass body resists corrosion at 4000 psi pressure
  • 5 gpm flow handles heavy-duty drain cleaning
  • 3/8 in BSP discharge fits compatible AR North America units
  • Works with Grainger models 1MCX7 through 1WXW9

Specifications

TypeDrain Components
BrandDayton
Model1MCZ9

Questions about this item

Which Dayton chemical injector model should I choose for a 3/8 in BSP discharge connection?

The 1MCZ9 is the model with a 3/8 in BSP discharge connection, adjustable injection, brass body, 4000 psi maximum pressure and 5.5 gpm maximum flow.

What does the 4000 psi rating mean when the injector is installed on a pressure washer?

It is the maximum discharge pressure the injector can withstand; the pump must not exceed 4000 psi or the brass body and internal seals could fail.

How does the 3/8 in BSP thread limit the hoses and fittings I can use?

Only hoses, lances or quick-connects with a matching 3/8 in BSP male thread will seal correctly; NPT or metric threads will not engage properly.

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