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The EMAX EP10DW120V3-460 is a NEMA4-compliant, weather-resistant duplex 10 HP piston air compressor delivering 76 CFM from a 120-gallon horizontal tank, wired for 460V 3-phase power. Its two-stage, pressure-lubricated cast iron pump design and alternating switch suit shops and facilities that need dependable, high-volume compressed air in demanding, continuous-duty environments.
Duplex Configuration & Package Features
Duplex with Alternating Switch: A duplex compressor package equipped with an alternating switch on a single 120-gallon horizontal tank.
NEMA4 Compliant, Weather-Resistant: Built as a NEMA4-compliant, weather-resistant unit.
TEFC Motor & Mag Starter: Totally enclosed fan-cooled (TEFC) motor with a magnetic starter, configured for 460V 3-phase power.
Convenience Features: Includes an automatic tank drain, pump riser, belt tensioner, and a 1" outlet.
Pressure Lubrication System
Gear-Driven Oil Pump: Mounted to the rear of the crankshaft, the gear oil pump generates positive oil pressure and delivers a continuous flow of oil to each bearing point, keeping bearings cool and extending pump life.
Rifle-Drilled Crankshaft & Rods: The crankshaft and connecting rods are rifle-drilled for direct oil flow to bearings, the piston pin, and other high-friction wear points.
Spin-On Oil Filter: An automotive-style spin-on oil filter keeps oil clean and simplifies maintenance during oil changes.
Analog Oil Pressure Gauge: Lets operators monitor oil pressure accurately.
Critical Components Coverage: Unlike splash-lubricated systems, pressure lubrication delivers oil precisely where it's needed, reducing friction, wear, and heat in high-stress, continuous-duty applications.
100% Cast Iron Two-Stage Pump
Cast Iron Construction: All major components are cast iron, including the crankcase, cylinder heads, cylinders, connecting rods, crankshaft, and high-pressure piston. Cast iron offers greater durability and rigidity than the aluminum components used in many compressors.
Cast Iron High-Pressure Pistons: Designed to withstand heavy loads and prevent cylinder scoring and pump failure.
Aluminum Low-Pressure Pistons: Used for balance and efficiency, since they operate under low stress (approximately 45 PSI).
CNC-Machined Solid Cast Iron Connecting Rods: Provide maximum rigidity and strength, maintaining strength at the crankshaft end, where aluminum rods commonly fail.
Fully Rebuildable Rods: Replaceable bearing inserts and wrist pins allow the connecting rod assembly to be rebuilt rather than thrown away.
Sealing & Valve Design
Four-Ring Piston Design: Two oil control rings remove excess oil on the downstroke, and two overlapping compression rings seal under compression to prevent blow-by. This reduces oil carryover and extends ring life.
Non-Oil-Absorbent Gaskets: High-quality gaskets minimize oil leakage and reduce maintenance requirements.
CNC-Machined Disc Valves: Precision surface-ground concentric ring (disc) valves provide superior sealing and longer service life than feather or fixed reed valves.
Quick Valve Service: To service a valve, remove the retainer, lift out the valve for inspection, and reinstall it within minutes.
Head Unloader Ready: All valves are engineered to support an automatic head unloader system. Head unloaders relieve the intake valve during constant-run operation, improving pump cooling and reducing wear.
Heavy-Duty Flywheel & Belt Drive
Cast Iron Flywheels: Heavy-duty cast iron flywheels add mass for greater kinetic energy, reducing amp draw and lowering overall energy consumption. The 10 HP flywheel is 20" with 9 large cooling fins for improved pump cooling.
Multiple B-Groove Belts: This unit uses 4 B-groove belts, which provide a larger contact surface to extend belt life.
Need help confirming whether this duplex 10 HP, 76 CFM, 460V 3-phase compressor is the right fit for your facility? Call Pittsburgh Spray Equipment at 888-714-1410 for sizing help.
Specifications — EP10DW120V3-460
| HP | 10 |
| Tank Size | 120 |
| Voltage +/- 10% | 460 |
| Phase | 3 |
| Drive Type | Electric |
| Tank Drain | Automatic |
| Pump Type | Pressure |
| CFM | 76.00 |
| Silent Air | N |
| Smart Air | N |
| Compressor Type | Piston |
| Motor Type | TEFC |
| Tank Orientation | Horizontal |
| Outlet Size | 1" |
| Belt Count | 4 |
| Pump Stage | 2 |
| Pump Riser | Y |
| Belt Tensioner | Y |
| Mag Starter | Y |
| Radiator | N |