NorthStar 20 Gallon Air Compressor – GX390 Review

NorthStar 20 Gallon Air Compressor

In this article, we will share NorthStar 20 Gallon Air Compressor GX390 Review in detail. This NorthStar 20 Gallon air compressor is a heavy-duty horizontal air compressor. NorthStar GX390 is powered by a quality Honda gasoline engine with 3 Amp charging system.

NorthStar GX390 is a full cast belt-driven iron two-stage air compressor. Its V-type pump features cylinder design for Low Vibration Technology (LVT), superior cooling for smooth operation and floating-type Swedish steel valves for long valve life. Its crankshaft has bearings on both ends for excellent support and smooth running.

NorthStar GX390 has a liquid-filled pressure gauge for better accuracy and protection against pressure spikes. It also has a durable steel belt guard which makes it standalone from other same range compressors.

NorthStar GX390 20 Gallon Key Specs

Brand	NorthStar
Manufacturer’s Warranty	4 Yr Consumer/2 Yr Commercial
Ship Weight	492.0 lbs
Horsepower	12 HP
Air Tank Size	20 Gal
Engine Brand	Honda
Engine Displacement	390 cc
CFM at 90 PSI	24.4
Max. PSI	175
CFM at 40 PSI	26.8
Engine Start Type	Electric w/recoil backup
Stage	2

NorthStar 20 Gallon Air Compressor Additional Specs

Drive Style	Belt
Duty Cycle	100 %
Air Outlet Size	3/4 in. NPT
Fuel Capacity	1.6 Gal
Pump Material	Cast Iron
Oil Required	Yes
Low Oil Shutdown	Yes
Low Oil Protection	Yes
Drain Type	Manual
After Cooler Included	Yes
Tank Orientation	Horizontal
Dimensions L x W x H (in.)	41 x 19 x 40

NorthStar Air Compressor 20 Gallon

Features & Benefits

• Honda GX160 OHV engine with low oil shutdown
• Full cast iron pump for long service life
• Delivers 13.7 CFM @ 90 PSI
• 130 max. PSI
• 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
• 100% duty cycle
• Durable steel belt guard
• Liquid-filled pressure gauge
• Oversized flywheel for cooler operation
• Heavy cast iron flywheel provides extra momentum
• 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
• Easy start lever on unloader valve isolates pump from tank pressure, so engine won’t have to start under load
• Pressure regulator to control outlet pressure
• 20-gallon ASME-certified horizontal tank
• Built-in wheels with handle for easy portability

Best NorthStar Air Compressors

NorthStar GX390 20 Gallon Air Compressor Conclusion:

In this article, we tried to cover NorthStar 20 Gallon Air Compressor GX390 Review in detail. It’s a heavy-duty 20-gallon horizontal air compressor. NorthStar GX390 is powered by a quality Honda gasoline engine with 3 Amp charging system.

The unit is particularly heavy (492 lbs) and is expensive (typically ~$1,000-2,000).

But at the same time, its biggest benefit is high CFM PSI. It operates with a maximum 175 PSI pressure; it boasts an output of 18.7 CFM at 175 PSI, as well as 24.4 CFM at 90 PSI.

In short, if you have budget, this air compressor is a must have for all of your garage and other heavy-duty requirements.