counterclockwise on the flywheel side of the pump
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NorthStar Air Compressor Pump, 2-Stage, 2-Cylinder, 24.4 CFM @ 90 PSI, 175 Max. PSI

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Shipping:
Free shipping (lower 48 states) - Available nowStore Pickup:
Out of stock at Fredericksburg VA
- Full cast iron pump for long service life
- V-style cylinder design for superior cooling
- Pump head made of FC35 Grade cast iron
- Floating-type Swedish steel valves deliver much longer valve life
- Operates at slower RPM to run cooler and last longer
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Description
Key Specs
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Product Summary
What's Included
- (1) NorthStar Air Compressor Pump
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Superior Design for Industry-Leading Pumps
Low Vibration and Durability
The last thing you want to worry about is your compressor breaking down in the middle of a job. The NorthStar® 2-Cylinder Air Compressor Pump has been engineered with superior technology to keep you working without interruption. Innovative Low Vibration Technology (LVT) gives you a dynamically balanced pump for smooth operation and long service life. Bearings are placed on both ends of the pump's crankshaft for superior support and less wear and tear. The result is reliable, dependable operation of your NorthStar® air compressor pump, year after year.
Longer Pump Life
Heat can be a powerful enemy to the longevity of your air compressor pump. That's why this NorthStar® 2-Cylinder Air Compressor Pump has been engineered with a V-style cylinder orientation to eliminate hotspots and provide consistent cooling, resulting in longer pump life. The pump cylinders, heads and crankcase are made of cast iron for extra-long service life. And the pump utilizes premium-quality floating-type Swedish steel valves for trouble-free performance. Thanks to this excellent technology, you can count on your NorthStar® air compressor pump to perform flawlessly for many years.
Features + Benefits

- Full cast iron pump for long service life
- V-style cylinder design for superior cooling
- Pump head made of FC35 Grade cast iron
- Floating-type Swedish steel valves deliver much longer valve life
- Operates at slower RPM to run cooler and last longer
- Low Vibration Technology (LVT) features a dynamically balanced pump for smooth operation and long life
- One-piece cast iron crankcase has bearings on both ends of crankshaft for superior crankshaft support, not overhung crankshaft design
- Two-stage, 2-cylinder pump
- Produces 24.4 CFM @ 90 PSI
- Requires 7.5 HP electric or 13 HP gas motor
- 100% duty cycle
- 175 max. PSI
- 16in. dia. oversized flywheel for cooler operation
- Heavy cast iron flywheel provides extra momentum
- Connecting rod oil journals ensure that bronze bushings are lubricated
- Step-type piston rings ensure piston ring overlap for better compression
- Sight glass for quick viewing of oil level
- Replaceable crank journals and wrist pin journal/needle bearings
- Two-piece connecting rods can be rebuilt for superior serviceability
- High-pressure piston wrist pins have needle bearings
Key Specs
| Attribute | Specification |
|---|---|
item# | 4593100 |
Brand | NorthStar |
Manufacturer's Warranty | 12 months parts/12months labor |
Ship Weight | 135.0 LB |
| Attribute | Specification |
|---|---|
Stage | 2 |
Max. PSI | 175 |
Product Weight | lb |
Dimensions L x W x H (in.) | 21.0 x 21.0 x 21.0 in |
Reviews
Questions & Answers
Questions
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· 8 years ago
rotation of pump
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MECHANIC28MIKE· 7 years ago
Helpful?
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NorthstarExpert11· 8 years ago
When facing this pump's flywheel, it rotates counterclockwise.
Helpful?
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· 9 years ago
does it have a oil sump pump or is it splash lubircated
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MECHANIC28MIKE· 7 years ago
splash lubricated
Helpful?
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productexpert6· 9 years ago
This compressor pump is splash lubricated.
Helpful?
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· 12 years ago
Does it include an Unloader Valve?
I want to drive this compressor from a truck PTO, does it include an unloader valve or do I need to purchase separately?
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mgrotor· 12 years ago
It does not have one
Helpful?
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productexpert6· 12 years ago
The compressor pump does not have an unloader valve.
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· 4 months ago
I NEED TO GET PARTS FOR THIS PUMP BUT HAVENT FOUND A PLACE TO LOOK AT A DIAGRAM. PLEASE HELP
1 answer-
NorthstarExpert12· 4 months ago
A parts diagram and list can be found on pages 21-23 of the Product Manual which is located below the Product Summary on the web page. These parts can be purchased through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.
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· a year ago
Do I have to put a bleed off on this pump or is it already set up with one already
1 answer-
NorthstarExpert12· a year ago
The check valve will bleed off the cylinder head. The air compressor it is being used on should also have a check valve installed.
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· a year ago
What’s the cfm at 90psi using a 5HP motor?
1 answer-
NorthstarExpert12· a year ago
This pump requires a 7.5 HP electric or 13 HP gas motor. It will not run correctly on a 5 HP motor.
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· a year ago
what series is the v on the flywheel?
1 answer-
NorthstarExpert12· a year ago
The V-belt size is "A".
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· 2 years ago
What is the warranty on this unit
1 answer-
NorthstarExpert30· 2 years ago
This pump has a 12 month parts and labor warranty.
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· 2 years ago
Is it a signal rotation and does the flywheel come with it and what is the maximum rpm ?
1 answer-
NorthstarExpert7· 2 years ago
This is a counter clockwise rotation. This pump includes a 16" diameter flywheel. The max RPM with a 7.5 HP electric motor is 1132 RPM.
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· 3 years ago
Where can you get the fly wheel(Ref. 31. Part.791197). And the breather cap (Ref. 29, part. 788882).
1 answer-
NorthstarExpert12· 3 years ago
The pulley (ref. 31) is part #791527. The breathing cover (ref. 29) is part #788882. These are available through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.
Helpful?
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Warranty
Manufacturer's Warranty
12 months parts/12months labor
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
2
2
2
1
175
175
175
135
lb
lb
lb
lb
21.0 x 21.0 x 21.0 in
13.0 x 18.0 x 15.0 in
14.12 x 13.75 x 22.75 in
12.0 x 13.0 x 15.0 in
-
5
-
3
-
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22.9 cfm
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NorthStar Air Compressor Pump, 2-Stage, 2-Cylinder, 24.4 CFM @ 90 PSI, 175 Max. PSI
Item # 4593100







