Description

The EMAX ESP10V120V3PK-208 Industrial Plus package pairs a 10 HP two-stage Silent Air compressor with a 58 CFM refrigerated air dryer as one complete air system. The V4 pressure-lubricated pump delivers 38 CFM (34 CFM at the maximum 175 PSI) into a 120-gallon vertical tank, running on 208V three-phase power with a TEFC motor and magnetic starter. The package is ETL, ASME, and CRN certified.

EMAX's patented Silent Air system attacks intake noise — the loudest source of compressor sound — with noise-reducing baffle plates and high-capacity filter media that provides up to 1000% more filtration than standard setups. The result is operation up to 50% quieter, at or below conversational volume, without the cost and restricted service access of an enclosed cabinet.

This is a continuous-run unit rated for a 60% duty cycle, with a head unloader system that relieves the intake valves at preset pressure so the motor keeps running instead of repeatedly starting under load — reducing amp draw by up to 60% while unloaded and protecting the motor and magnetic starter. A dual-timer electric auto drain expels tank moisture on an adjustable 1–45 minute cycle, and the included dryer removes the rest before air reaches your tools.

Features

Pressure-Lubricated Pump

A gear-driven oil pump mounted to the rear of the crankshaft generates positive oil pressure, delivering a continuous flow of oil to every bearing point. The crankshaft and connecting rods are rifle-drilled so oil travels directly to bearings, wrist pins, and other high-friction components, while an automotive-style spin-on oil filter keeps the oil clean and simplifies oil changes. A liquid-filled gauge gives accurate oil-pressure readings, a bleeder valve allows quick priming, and an adjustable regulator sets oil pressure across RPM ranges. EMAX estimates pump life at 70,000 hours.

100% Cast Iron Pump

All major components of the APP4V1043TP pump are cast iron — crankcase, cylinder heads, cylinders, connecting rods, crankshaft, and high-pressure piston. Unlike aluminum-sleeved designs, the cast iron cylinders are CNC-machined with deep cooling fins, deep-bored threaded head-bolt holes, and precision-honed bores that reduce oil carryover and extend ring life.

Pistons and Connecting Rods

Cast iron high-pressure pistons withstand heavy loads and prevent cylinder scoring, while the low-pressure pistons of the two-stage design are aluminum for balance at their lower operating stress. The CNC-machined solid cast iron connecting rods use replaceable bearing inserts and wrist pins, making the rod assembly fully rebuildable rather than throw-away. A four-ring piston design overlaps two oil-control rings and two compression rings to minimize blow-by and oil carryover, and non-oil-absorbent gaskets keep the seal reliable between services.

Cast Iron Cylinder Heads with Disc Valves

The cast iron heads use CNC-machined, surface-ground concentric ring (disc) valves rather than reed valves — serviceable in minutes by removing the retainer and lifting out the valve, and engineered to hold a secure head-gasket seal without retorquing. All valves support the automatic head unloader system included on fully packaged electric units like this one.

Heavy-Duty Flywheel and Belt Drive

The 10 HP pump runs a 20-inch cast iron flywheel with two B-style groove belts and nine large cooling fins. The added flywheel mass builds kinetic energy that lowers amp draw, the multi-belt B-width drive grips with more surface area at lower belt tension than narrow single-belt drives, and the fins push extra cooling air across the pump.

Dual-Bolt Belt Tensioner

The dual-bolt tensioner keeps the drive aligned while setting belt tension precisely — no pry bars required — reducing belt wear and simplifying service.

Pump Riser

The pump mounting plate riser raises the pump for 360-degree airflow from the flywheel across the oil reservoir, and lets air flow under the pump for maximum cooling.

Auto Drain

The dual-timer electric auto drain expels moisture from the tank automatically. Drain cycles adjust from 1 to 45 minutes, and the open-time of each drain cycle is adjustable as well.

What's Included

• EMAX Industrial Plus 10 HP two-stage Silent Air compressor on a 120-gallon vertical tank, with pressure-lubricated pump, magnetic starter, dual-bolt belt tensioner, and pump riser
• 58 CFM refrigerated air dryer with built-in .001 micron prefilter and .005 micron coalescing prefilter
• Dual-timer electric automatic tank drain
• Isolator pads

Specifications

Warranty

The compressor carries a 1-year standard warranty against defects in material, workmanship, and parts, including one year of warranty labor from an authorized technician. Registering the unit at emaxwarranty.com and following the required maintenance schedule using EMAX SMART OIL extends coverage to a 5-year extended warranty. Units ship with break-in oil that must be changed within the first 70 hours, then every 6 months or 1,000 hours.

The refrigerated dryer carries its own 1-year standard warranty, extendable to 3 years by registering and purchasing one Airbase dryer filter replacement kit per year with routine maintenance.

The EMAX 5-Year Extended Warranty Kit (EFKIT008AWBS, sold separately) is built for 5–10 HP Silent Air electric models and includes the components and lubricants required for startup and the scheduled maintenance that supports extended coverage.

FAQ

What electrical service does it need?

Three-phase power with a 50 A recommended breaker. Full-load amps are 27.9 with the 1.15 service factor, and peak starting (locked rotor) draw is 171 A. The magnetic starter is included. The model is designated 208V; the supplier spec sheet lists supply voltage as 230V ±10%.

Is the air dryer included?

Yes. The package ships as a complete air system with a 58 CFM refrigerated dryer, including a built-in .001 micron prefilter and a .005 micron coalescing prefilter.

Can it run continuously?

Yes. The unit is rated at a 60% duty cycle and equipped for continuous run: above a 40% duty cycle, the ball valve on the pilot valve can be opened so the head unloader holds the intake valves open at preset pressure, letting the motor run unloaded instead of cycling on and off.

How quiet is it?

EMAX rates its patented Silent Air system at up to 50% quieter operation, with noise at or below conversational volume. Each 10 dBA drop reads as a 50% reduction to the human ear.

What maintenance does it need?

Change the break-in oil within the first 70 hours, then every 6 months or 1,000 hours (oil capacity is 2 quarts) — using EMAX SMART OIL keeps extended-warranty eligibility. The spin-on oil filter changes like an automotive filter, and the EFKIT008AWBS service kit covers the scheduled-maintenance components for this model.

Documents

• Piston Compressor Manual
• Refrigerated Air Dryer Manual
• Compressor Warranty Statement
• Air Dryer Warranty Statement