The maximum GPM this injector can work with is 5.0 GPM. It would not work with the 7 GPM pump.
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NorthStar Quick-Connect Pressure Washer Detergent Injector, 4500 PSI, 2.1mm Orifice, 3/8in. QC-F Inlet x 3/8in. QC-M Outlet

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Shipping:
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Estimated to ship 07/09/26Store Pickup:
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- Adjustable control
- 2.1mm orifice for pressure washers up to 5.0 GPM
- For cold or hot water applications, up to 200°F
- 3/8in. inlet/outlet
Prop 65 Warning: See Details
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Description
Key Specs
Reviews
Q & A
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Product Summary
What's Included
- (1) Quick connect detergent injector
Features + Benefits
- Adjustable control
- 2.1mm orifice for pressure washers up to 5.0 GPM
- For cold or hot water applications, up to 200°F
- 3/8in. inlet/outlet
Key Specs
| Attribute | Specification |
|---|---|
item# | 43120 |
Brand | General Pump |
Ship Weight | 0.45 LB |
Max. PSI | 4,500 |
| Attribute | Specification |
|---|---|
Female Inlet | 0.375 in |
Male Outlet | 0.75 in |
Orifice Size | 2.1 mm |
Max. Degree Detergent | 200 °F |
Reviews
Questions & Answers
Questions
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· 12 years ago
I have a 7gpm @4000psi unit from NT. will this work with my unit and what is the varible ratio i will get from this injector
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ProductExpert6· 3 years ago
Helpful?
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BillyDB· 8 years ago
Specs say it works up to 5.0 gpm.
Helpful?
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· 10 months ago
Will this work with a 2500 PSI pressure washer? What is the maximum length of hose that I can use with this item?
1 answer-
ProductExpert6· 10 months ago
The detergent injector can be used with a 2500 PSI pressure washer. The maximum it can be used with is 4500 PSI. The maximum hose length you could use with it is 150 feet.
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· 3 years ago
What size barbed connection is on it?
1 answer-
ProductExpert12· 3 years ago
This injector has a 1/4" hose barb.
Helpful?
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· 6 years ago
can you purchase replacement springs and balls for these ...
1 answer-
ProductExpert18· 6 years ago
Parts for this General Pump detergent injector can be purchased through the manufacturer.
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· 7 years ago
What is the min and max chem draw on this injector?
1 answer-
ProductExpert6· 3 years ago
The manufacturer advised this item has an adjustable chemical draw that will range from 0-20%.
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· 10 years ago
will this valve work with a normal 50psi water flow?
Can this valve be used as to pull sanitizer through at a normal 50 psi water flow?
1 answer-
ProductExpert40· 10 years ago
This pressure washer detergent injector is designed to use vacuum created by a pressure washer pump to work. It will not work with normal city water pressure such as 50 psi from a water hydrant for instance.
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· 10 years ago
Can you feed a bleach mixture through this injector?
1 answer-
ProductExpert7· 10 years ago
It is not recommended to run a bleach mixture through this detergent injector.
Helpful?
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· 11 years ago
Does it have aceramic ball or metal ball?
1 answer-
ProductExpert6· 11 years ago
This detergent injector comes with a steel ball.
Helpful?
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· 12 years ago
Does this injector go before or after the pump? Low oreasure side or high preasure side?
1 answer-
ProductExpert12· 12 years ago
The General Pump Chemical Injector will be installed after the pump. This is a low pressure chemical injector.
Helpful?
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· 12 years ago
Will this work with a 4 gpm @ 400 psi pump?
1 answer-
ProductExpert6· 12 years ago
This injector will work with your 4000 PSI pump. The maximum it can be used with is 4500 PSI.
Helpful?
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Specifications
4,500
4,000
50
50
0.375 in
0.25 in
0.25 in
0.25 in
0.75 in
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2.1 mm
1.2 mm
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200 °F
140 °F
100 °F
100 °F
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1/4 in
1/4 in
1/4 in
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5.3
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1.4800 lb
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3.5 x 12.0 x 7.0 in
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Multiple
See All Pressure Washer Detergent Injectors
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