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NorthStar Quick-Connect Pressure Washer Detergent Injector, 4500 PSI, 1.8mm Orifice, 3/8in. QC-F Inlet x 3/8in. QC-M Outlet

Item# 43119
"General Pump Quick Connect Pressure Washer Detergent Injector, 1.8mm Orifice, 4500 PSI, Model# N100811P"
NorthStar Quick-Connect Pressure Washer Detergent Injector, 4500 PSI, 1.8mm Orifice, 3/8in. QC-F Inlet x 3/8in. QC-M Outlet

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NorthStar Quick-Connect Pressure Washer Detergent Injector, 4500 PSI, 1.8mm Orifice, 3/8in. QC-F Inlet x 3/8in. QC-M Outlet

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$52.99

  • Shipping: 

    Backordered: Order now to reserve yours -
    Estimated to ship 07/13/26

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  • Orifice + Flow Control: 1.8mm orifice supports pressure washers up to 3.0 GPM for proper detergent draw and consistent application
  • Pressure + Temperature Rating: 4,500 max. PSI and 200°F max. rating supports cold or hot water cleaning systems
  • Connection Size: 3/8in. inlet x 3/8in. outlet supports standard pressure washer connections
  • Adjustable Detergent Control: Integrated control knob allows precise adjustment of chemical flow for different applications
  • Durable Construction: Hardened steel nipple resists wear and maintains performance in demanding use

  • Prop 65 Warning: See Details

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  • Description

  • Key Specs

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Product Summary

The NorthStar Quick-Connect Pressure Washer Detergent Injector is built for higher-pressure systems, delivering consistent detergent application for pressure washers up to 3.0 GPM. The 1.8mm orifice supports proper chemical draw for low-flow setups, while the adjustable control allows fine-tuning based on cleaning requirements. Constructed with a hardened steel nipple for durability, this injector is designed to withstand demanding use. Rated for up to 4,500 max. PSI and water temperatures up to 200°F, it supports both cold and hot water applications for flexible jobsite use. The NorthStar Detergent Injector provides reliable, controlled detergent delivery for high-pressure cleaning systems.

What's Included

    (1) NorthStar Quick-Connect Pressure Washer Detergent Injector

Features + Benefits

  • Orifice + Flow Control: 1.8mm orifice supports pressure washers up to 3.0 GPM for proper detergent draw and consistent application
  • Pressure + Temperature Rating: 4,500 max. PSI and 200°F max. rating supports cold or hot water cleaning systems
  • Connection Size: 3/8in. inlet x 3/8in. outlet supports standard pressure washer connections
  • Adjustable Detergent Control: Integrated control knob allows precise adjustment of chemical flow for different applications
  • Durable Construction: Hardened steel nipple resists wear and maintains performance in demanding use

Key Specs

AttributeSpecification

item#

43119

Brand

General Pump

Ship Weight

0.45 LB

Max. PSI

4,500
AttributeSpecification

Female Inlet

0.38 in

Male Outlet

0.38 in

Orifice Size

1.8 mm

Max. Degree Detergent

200 °F

Reviews

Questions & Answers

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Questions

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  1. What is the flow rate of these? How many parts water per parts chemical?

    1 answer

    1. This pressure washer injector would have a flow rate of 2-3 GPM. It has a dilution rate at 20%.

      Helpful?

  2. Will this injector work with a 100' hose?

    I have a 4000 psi hot/cold north star washer. I want to inject chemicals down stream. The hose between the washer and wand is 100'. I want to use a dual lance for this purpose.

    1 answer

    1. This downstream injector is compatible with a 100' hose and also the dual lance, item #43402. The guns it would be compatible with are item #43531, #43240 and #43256.

      Helpful?

  3. Is this a down stream injector?

    General Pump Quick Connect Pressure Washer Detergent Injector - 1.8mm Orifice, 4500 PSI, Model# N100811P

    1 answer

    1. This general pump quick connect injecter is a down stream injector.

      Helpful?

  4. pressure of use

    The description of this product makes it sound like it will dispense soap up the max of 4,500 PSI. Is this correct? Most soap dispensers like this only work under low pressure settings. I am wanting to introduce soap under high pressure and need to make sure that this fits my aim. Thanks

    1 answer

    1. The chemical injector will inject chemical at low pressure only. It will work with pressure washers up to 4500 PSI. To inject soap at high pressure you would need an upstream injector. That will also put chemicals through the pump and may damage the pump parts. At this time, we do not carry any upstream chemical injectors.

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