EMAX ESP07V080V3-460 7.5 HP Silent Air | 31 CFM | 460V 3Ph

7.5 HP | 31 CFM at 100 PSI | 175 PSI Max | 460V Three-Phase | 80-Gallon Vertical Tank

The EMAX ESP07V080V3-460 E450 Silent Air is a premium industrial two-stage piston compressor for facilities with 460V three-phase electrical service. It combines a pressure-lubricated cast-iron pump, patented Silent Air™ intake noise suppression, an automatic tank drain, and an adjustable belt tensioner. These features provide a practical balance of dependable air delivery, cooling and maintainability for demanding workshops.

Key Features and Benefits

• 31 CFM at 100 PSI: Industrial airflow for demanding air tools and equipment.
• 460V three-phase TEFC motor: Designed for industrial electrical infrastructure.
• 175 PSI maximum working pressure: Supports appropriately rated and regulated compressed air systems.
• Pressure-lubricated cast-iron pump: Gear-driven oil delivery to critical internal components.
• Patented Silent Air™: Intake sound suppression with accessible service components.
• Dual-timer automatic drain: Helps remove condensate on an adjustable schedule.
• Dual-bolt belt tensioner: Helps maintain belt alignment and drive efficiency.
• Pump riser: Improves airflow around the crankcase and oil reservoir.
• Magnetic starter: Included for this exact model.

Why Pressure Lubrication Matters

A gear-driven oil pump circulates lubricant through rifle-drilled crankshaft and connecting-rod passages, delivering oil to critical wear points. An automotive-style spin-on filter captures contaminants, while the oil pressure gauge provides operating feedback. This differs from traditional splash lubrication and helps protect internal bearings, provided oil and filter service is maintained.

Built for Service: Cast-Iron Pump and Disc Valves

EMAX's pressure-lubricated pump family features cast-iron crankcases, heads, cylinders, crankshafts, connecting rods and high-pressure pistons. The low-pressure piston in its two-stage pumps is aluminum. Four piston rings help manage sealing and oil carryover, and serviceable concentric disc valves, bearing inserts and wrist pins support rebuildability.

Silent Air™ Noise Suppression

The patented intake silencer channels air through noise-reducing baffles and high-capacity filter media. EMAX advertises up to 50% quieter operation for this technology, subject to installation conditions. This approach does not hide the motor and pump behind a full enclosure.

Learn more from EMAX Silent Air™ and What Is Silent Air?.

Drive, Drain and Cooling Features

The heavy-duty cast-iron flywheel in the 7.5 HP pump family has dual B-style belt grooves and cooling fins to promote durable power transfer. Dual belts provide greater contact area and distribute load. The dual-bolt tensioner simplifies adjustments, while the pump riser allows cooling air beneath the crankcase. The automatic drain has adjustable discharge intervals from 1 to 45 minutes with adjustable opening duration.

E350 Versus E450

Both 7.5 HP versions deliver 31 CFM at 100 PSI. The E450 adds an automatic tank drain, belt tensioner and pump riser. These features support easier maintenance and cooling rather than increasing rated airflow. The separate 208/230V and 460V versions should be selected according to the facility's electrical service.

Technical Specifications

Selecting a Complete Air System

Check the combined CFM demands of tools that will run together, the pressure required at the point of use, and actual daily compressor run time. For moisture-sensitive applications, match the compressor with an appropriately sized air dryer and filtration. Routine service products are in our maintenance collection.

Frequently Asked Questions

Is the ESP07V080V3-460 460V three-phase?

Yes. It is the 460V three-phase version, separate from the 208/230V three-phase model.

How much air does it deliver?

31 CFM at 100 PSI, with a maximum operating pressure of 175 PSI.

What type of motor does it use?

A TEFC electric motor operating at 1,740 RPM.

Does it come with an automatic tank drain?

Yes, a programmable timed drain is included to remove receiver condensate.

What is the difference between this model and the E350?

The E450 includes an automatic tank drain, pump riser and belt tensioner, in addition to its pressure-lubricated pump and Silent Air intake.

Is a refrigerated air dryer included?

No. Air drying and additional filtration must be sized and purchased separately.

Can it run continuously?

EMAX describes head-unloader options for continuous-run applications, but continuous-run capability should not be confused with a confirmed 100% duty-cycle rating.

How much electrical power does it require?

EMAX lists 10.30 full-load amps including the 1.15 service factor, 66.2 peak starting amps and a 20A recommended breaker. An electrician must confirm installation requirements.

What maintenance kit is specified?

EMAX lists EFKIT008AWBS for this compressor. Follow manufacturer maintenance instructions and warranty requirements.

For help with electrical configurations and compressor sizing, call 877-247-2381.