Mi-T-M Heavy-Duty Industrial Duplex Compressors

Mi-T-M Heavy-Duty Industrial Duplex Compressors

Mi-T-M Heavy-Duty Industrial Duplex Compressors represent the pinnacle of system redundancy, high-volume capacity, and industrial reliability. Designed for continuous-duty applications where air demand is fluctuating but downtime is not an option—such as large automotive collision centers, commercial repair facilities, and industrial manufacturing plants—these units mount two independent motors and two-stage cast-iron pumps onto a single 120-gallon horizontal receiver tank.

By utilizing an automatic alternating control system, these duplex units balance operating hours evenly between both pumps under normal loads, while maintaining the ability to run both systems simultaneously when air demand spikes.

Understanding the Product Line: ACD, ADD, & AED Series

This premium lineup is categorized by horsepower and pump configurations to deliver the precise cubic feet per minute (CFM) your facility requires.

1. The ACD 5.0 HP Series

Equipped with dual 5.0 HP industrial motors and two-stage pumps, these units are ideal for mid-sized commercial shops requiring an ultra-reliable, redundant 175 PSI air system.

• Performance Output: 36.0 CFM @ 175 PSI (200 PSI Max)
• Standard Models: ACD-23105-120H, ACD-20305-120H, ACD-23305-120H, ACD-46305-120H

2. The ACD 7.5 HP Series

Stepping up the horsepower while maintaining the high-efficiency “C” pump architecture, the 7.5 HP series delivers rapid recovery times for higher-frequency tool usage.

• Performance Output: 47.0 CFM @ 175 PSI (200 PSI Max)
• Standard Models: ACD-23175-120H, ACD-20375-120H, ACD-23375-120H, ACD-46375-120H

3. The ADD 10.0 HP Series

Engineered for large-scale industrial operations, the ADD series pairs dual 10.0 HP motors with massive, larger-displacement “D” two-stage pumps to handle heavy continuous pneumatic loads like multi-user sandblasting and production machinery.

• Performance Output: 69.0 CFM @ 175 PSI (200 PSI Max)
• Standard Models: ADD-23110-120H, ADD-20310-120H, ADD-23310-120H, ADD-46310-120H

4. The AED 15.0 HP Series

The flagship of the Mi-T-M reciprocating lineup. The AED series features dual 15.0 HP motors and ultra-high-displacement “E” pumps. Available exclusively in three-phase power configurations, this series rivals small rotary screw units in raw CFM volume while maintaining the straightforward maintenance of a piston design.

• Performance Output: 93.0 CFM @ 175 PSI (200 PSI Max)
• Standard Models: AED-20315-120H, AED-23315-120H, AED-46315-120H

Standard vs. Deluxe M-Series (Suffix “HM”)

Every model configuration is available in a Standard package or a factory-upgraded Deluxe M-Series package (indicated by the “M” suffix).

• Standard Models (“120H”): Feature industrial pumps, motors, magnetic starters, a 120-gallon horizontal ASME tank, and alternating control logic.
• Deluxe M-Series (“120HM”): Factory-loaded with a premium air-treatment and component-protection package, including:
  • Dual Air-Cooled Aftercoolers: Lowers compressed air temperatures dramatically to drop out up to 70% of moisture before it enters the tank.
  • Low Oil Sensor Indicators: Automatically prevents a pump from running if the oil level drops below a safe threshold, protecting your crankshaft and cylinders.
  • Electronic Tank Drain: Programmed to automatically purge accumulated water from the bottom of the tank at set intervals, eliminating manual maintenance.

Core Engineering & Control Features

• Smart Alternating Logic: A built-in alternating control switch allows the user to select Compressor 1 Lead, Compressor 2 Lead, or Automatic Alternating mode. In alternating mode, the system switches the starting pump on every cycle. If line pressure drops below a secondary set point, the lag pump activates automatically to supply full-load tandem power.
• 100% Cast-Iron Two-Stage Pumps: Splash-lubricated with a durable cast-iron crankcase, cylinders, and heads. Precision Swedish steel reed valves offer high volumetric efficiency and maximum thermal resistance.
• Industrial ODP Motors & Starters: Equipped with heavy-duty open drip-proof (ODP) industrial motors. Premium magnetic starters come standard on every model to provide independent thermal overload protection.
• Vibration-Dampened Construction: Units feature a 3/16-inch thick steel base plate to eliminate harmonic vibration, lower ambient shop noise, and prevent mechanical stress on tank welds.

Electrical Configuration Guide

Use the model numbers to quickly identify the exact voltage and phase required for your building’s electrical service:

(Note: Append -120H for standard or -120HM for deluxe configurations).

Installation & Placement Note: Due to high amperage starting spikes and complex duplex control wiring, all hardwired stationary models must be installed by a licensed electrician. For continuous system durability, the unit must be anchored onto a level concrete slab using industrial-grade vibration isolation pads. Regular checkups of the oil sight glass and keeping intake filters clear ensure your system delivers maximum CFM capacity for decades.