The QP MAX 10 HP compressor in this configuration is built for 460V 3-phase power, delivering the same industrial performance as the other voltage versions while potentially reducing installation costs where 460V service is already available. It combines a 1,750 RPM motor, two-stage cast-iron pump, and 120-gallon horizontal receiver, with a 100% continuous-duty rating and maximum working pressure of 175 PSI. The higher supply voltage means lower operating current for the same motor output, which can simplify conductor and breaker requirements on suitable installations. Note: this model requires 460V 3-phase power; it cannot be adapted to a different supply voltage with an external adapter.
The two-stage compression system uses a high-efficiency fin-and-tube intercooler between the cylinders to remove heat before the second compression stage. Cooler, denser intake air helps the second stage compress more efficiently while reducing thermal stress on the pump's valves, gaskets, and oil. Stainless steel reed valves with bumpers help control valve movement during repeated operation, while cast-iron cylinders, aluminum heads, and graphite gaskets are designed to withstand the temperature changes associated with continuous-duty compression. A magnetic starter provides motor thermal overload protection, with a spin-on oil filter and oil sight glass for routine maintenance.
This compressor is a practical choice for industrial facilities, manufacturing plants, and busy service shops with existing 460V 3-phase distribution. It is particularly well suited to installations with longer electrical runs or facilities standardizing equipment around a 460V supply. The horizontal 120-gallon receiver measures approximately 78" L × 28" W × 55" H and weighs about 850 lbs dry, so allow adequate space for service access, cooling airflow, delivery, and floor support before installation.
The Electrical Case, Explained Properly
Voltage choice is more than a checkbox — it affects installation cost. For the same power output, a higher-voltage motor draws less current, and current is what drives much of the electrical installation cost: conductor size, conduit requirements, breaker capacity and labour on longer runs.
On a 10 HP motor, the difference can determine whether an existing circuit is usable or whether a new supply has to be installed. Higher voltage can also improve starting performance by reducing voltage drop during motor inrush, especially on longer runs.
What voltage does not change is the compressor itself. Capacity, receiver size, working pressure and duty rating remain the same across the family. Choose the build that matches the electrical service already available at your site.
Why Two-Stage Compression Matters
A two-stage compressor compresses air in two steps: a large cylinder handles the first stage, then a smaller cylinder completes compression after the air passes through a high-efficiency fin-and-tube intercooler.
That cooling step is the reason two-stage designs are efficient. Compression creates heat, and feeding hot air into the second stage increases the work required and raises discharge temperatures. Cooling the air between stages gives the second cylinder a denser charge, reducing energy demand and thermal stress on the valves, gaskets and oil.
The pump uses cast-iron cylinders with aluminium heads — iron for stability and wear resistance, aluminium where heat dissipation matters. Graphite cylinder and head gaskets handle repeated temperature cycles, while stainless steel reed valves with bumpers help control valve movement and reduce fatigue over long service intervals.
Will It Fit?
This machine uses a horizontal 120-gallon receiver measuring 78" L × 28" W × 55" H and weighing 850 lbs dry.
Plan for service access, not only footprint. The belt guard, oil sight glass and spin-on filter need to remain accessible, and cooling airflow should come from fresh room air rather than recirculated heat.
The tank outlet is 3/4" and maximum working pressure is 175 PSI.
Electrical supply is 460V, 3-phase. This is an industrial service voltage and may not be available in smaller facilities. The magnetic starter is included and provides motor thermal overload protection. Breaker and conductor sizing should be completed by a certified electrician using your actual service, cable run and local requirements.
Before ordering, verify the electrical supply, doorway clearance, access route and floor capacity.
Perfect For
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Industrial facilities with existing 460V three-phase distribution.
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Long electrical runs where reducing current helps control installation cost.
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Continuous-duty compressed air systems feeding multiple workstations.
- Facilities standardising equipment around one electrical supply.
What Arrives
The compressor arrives assembled on its horizontal receiver with:
- Two-stage cast-iron pump
- Industrial motor
- Magnetic starter
- Spin-on oil filter
- Stainless steel reed valves with bumpers
- Graphite cylinder and head gaskets
- Fin-and-tube intercooler
Not listed as included: compressor oil, hose, dryer, air treatment, regulator or isolation valve. Confirm any required accessories before commissioning.
Specifications
| Motor |
10 HP, 460V, 3-phase, 1750 RPM, magnetic starter fitted |
| Duty rating |
100% continuous |
| Compression |
Two-stage belt drive, cast-iron cylinders with aluminum heads |
| Valves and sealing |
Stainless steel reed valves with bumpers, graphite cylinder and head gaskets |
| Cooling |
High-efficiency fin and tube intercooler |
| Maximum pressure |
175 PSI |
| Receiver |
120 gallons, horizontal, 3/4-inch outlet |
| Dimensions |
78 inches long, 28 inches wide, 55 inches high |
| Weight |
850 lbs |
| Warranty |
1-year factory, extending to the 3-year No Bull cover on registration |
Two Specifications to Confirm Before Ordering
Published information differs on two points. We are showing both versions rather than guessing.
Pump lubrication. The manufacturer feature list and page description call this a fully pressure-lubricated system with a positive-displacement oil pump feeding the crankshaft, bearings and rods. The specification data lists splash lubrication instead. These are different systems. If lubrication type matters to your purchase, ask us to confirm the as-shipped configuration with Quincy in writing before ordering.
Tank drain. The feature list and specification table list an automatic electronic tank drain, while another specification line says it is not fitted. Ask us to confirm this with Quincy before ordering.
These discrepancies do not affect the published capacity, receiver, electrical supply or warranty.
Certification, Stated Plainly
The specification sheet lists ASME, UL and CSA marks. Their scopes are different:
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ASME applies to the pressure vessel/receiver, including its design, materials and construction.
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UL and CSA apply to electrical components and controls.
- None certifies air quality, replaces local permitting, or eliminates required pressure-vessel inspections.
Confirm the requirements that apply at your installation site before commissioning.
Shipping & Delivery
Ships by freight within the lower 48 states, with shipping calculated at checkout based on your delivery address.
Plan for unloading with a forklift or loading dock. If neither is available, terminal pickup is an alternative. Residential deliveries incur a residential fee where applicable.
Inspect the compressor before signing. Photograph any damage and record it on the bill of lading while the driver is present. This is especially important for damaged guards, gauges, oil leaks or receiver dents.
Warranty
Quincy provides a 1-year factory warranty, extending to the 3-year No Bull warranty when the unit is registered with Quincy and maintained using Quincy kits.
Register the compressor as part of commissioning. If a problem occurs, contact us before opening or disassembling the pump or starter. A dismantled machine can make diagnosis and warranty evaluation difficult.
Warranty Details
