45% Lighter. 50% Quieter. More Powerful.

Vanair once again is listening and meeting the demands of the marketplace with the introduction of the new Reliant™ RS45 air compressor; the most powerful, lightweight system in its class. At 45% less weight than its predecessor, the RS45’s featherweight rust-proof aluminum canopy reduces truck weight and fuel consumption. Providing an impressive 45 cfm and up to 175 psi of on-demand air power at 100% duty cycle, the RS45 has the highest cfm rating in its class. Advanced sound attenuation technology has significantly reduced the sound level by 50% on the machine. Quieter, lighter and more powerful, the RS45 will meet your toughest challenges out in the field.

  • Literature
  • Product Specifications
  • Special Features
  • Options/Accessories
  • Hydraulic System Recommendations
  • Parts

Capacity (CFM) 30 30 30 35 35 35 40 40 40 45 45 45
Air Pressure (PSI) 100 125 150 100 125 150 100 125 150 100 125 150
Hydraulic Flow (GPM) 7 7.2 7.3 8.4 8.4 8.6 9.6 9.7 9.8 11 11.1 11.2
Hydraulic Pressure (PSI) 1950 2175 2375 2000 2200 2450 2050 2250 2475 2150 2350 2550

Contact Vanair for 175 PSI systems.

Compressor dimensions with fittings (In.) – 35.3L x 21W x 22.81H

Dimensions listed are not a complete representation of total space necessary. Please consult Vanair for overall space and air requirements.

Dry Weight (Lbs.) – 195

Ratings are approximate and are based on 120 ˚F hydraulic fluid temperature. Add 400 PSI minimum to hydraulic requirements for hydraulic system continuous pressure ratings. The RS45 hydraulic relief valve is set at 3200 PSI. Consult Vanair for specific details.


  • 30-45 CFM and Up to 150 PS
  • Lightweight - Only 195 lbs
  • 12V and 24V DC Models Available


  • Rotary Screw Air Compressor
  • Bolt-On Electric Inlet Valve
  • Integral Air-to-Oil Separator Tank
  • Lifetime Warranty on Air End


  • Capable of Cooling Up to 175 PSI
  • Ambient Operating Range of -20 ˚F to + 125 ˚F


  • Integrated Cooler Reduces Heat in Truck Hydraulic System


  • Gear-Type Motor
  • Hydraulic Oil In – 3/4” 37 Degree JIC #12)
  • Hydraulic Oil Out - 1” 37 Degree JIC (#16)
  • Open Center or Closed Center
  • Hydraulic Case Drain - 3/8” 37 Degree JIC (#6)
  • Hydraulic Load Sense Line - 1/4” 37 Degree JIC (#4)*


  • Conveniently Located and Easy to Read or Remote Mountable
  • LED Electronic Display for Temperature, Pressure, and Machine Hours

Safety Equipment

  • Air Pressure Relief Safety Valve
  • Hydraulic Oil Pressure Relief Valve
  • Automatic Blow-Down on Shutdown
  • High-Temperature and High-Pressure
  • Compressor Shutdown
  • Oil Fill Plug Safety Relief


  • Reversible Hinged Hood and Oil Fill Service
  • Access Panel for Easy Accessibility
  • JIC Fittings on Front of Machine for Hydraulic and Air Connections for Convenience


  • Lightweight Powder-Coated Aluminum Sheet Metal Enclosure
  • Single Point Lifting Bail


  • Cold Weather Package with Thermal Valve
  • 20 - 60 Gallon Air Reservoirs
  • Aftercoolers
  • Air Hoses
  • Air Tools
  • Hose Reels and Fittings
  • OSHA Safety Valve (Velocity Fuse)
  • Service/Control Line Moisture Separators
  • Tool Oiler/Lubricator
  • Service Airline De-Icer
  • Filter Lubricator Regulator (FLR) 1/2”

*Load sense line for closed center hydraulic system only.

All hydraulic ratings and pressures are at the machine and do not take into account the pressure drops of individual hydraulic systems. These pressure drops need to be taken into account and added to the rating of the hydraulic pump and components. Vanair highly recommends consulting a hydraulic supply expert for specifying the correct hydraulic pump size and type, oil reservoir size, hydraulic cooler, hydraulic pressure relief, and other hydraulic supply components for your application. Please take into consideration the following: The hydraulic flow and pressure requirements of the air compressor, the continuous hydraulic load when the compressor is running, the duty cycle and ambient operating temperatures, and any other hydraulic equipment that may share the same hydraulic supply system (Vanair recommends a dedicated pump and hydraulic circuit).

For more information please consult Vanair.

Part Description Part Number
Vanguard™ Premium Green Oil (Four Pack) 264626-4GREEN
Vanguard™ Premium Oil (Four Gal.) 264626-4PACK
Service Kit, Initial 50 Hours for Reliant™ RS45 (Vanguard™ Oil and Oil Filter) KIT1285
Service Kit, Lifetime Warranty for Reliant™ RS45 (Vanguard™ Oil, Oil Filter, Air Filter, and Spin-On Coalescer) KIT1095