MCH36D Kubota Diesel High Pressure Compressor

Nuvair's flagship open horizontal, continuous-duty, commercial high pressure compressor line utilizes the Coltri MCH36 pumping unit. The compressor can pump up to 27 SCFM (764 L/min) at 5000 psi (345 bar) when charging cylinders. The Coltri compressor block and Kubota diesel engine are mounted onto a steel base frame with vibration isolators, which is then placed into a powder-coated steel crash frame with belt guard.


Compressor Features

  • Four cylinder, four stage, air cooled
  • Visual CO / moisture indicator
  • Interstate pressure gauges
  • Two large interstage condensate separators
  • Large stainless steel interstage cooling tubes
  • Low pressure oil pump with filter
  • Oil level sight gauge and oil pressure gauge
  • Automatic condensate drains
  • Low oil shutdown switch
  • High temperature switch
  • SEP-15 high pressure moisture separator
  • Triple filter filtration (90,000 cu ft)
  • Powder-coated steel frame & belt guard
  • Vibration isolation frame mounts

Engine Features

  • Kubota D1803 diesel
  • Hayes bearing support block
  • Hour meter
  • Loadless start
  • Digital engine control panel monitors and displays engines oil pressure, coolant temperature, engine RPM, engine hours, battery voltage, fault indication, and manual throttle control. Engine shuts down when safety switch activates.


  • Water cooling [ More Information ]
  • Certified lifting eyes
  • Pro CO with audible alarm
  • Diester based lubricant
  • Moisture analyzer
  • 6000 psi (414 bar) upgrade
  • Quad filtration (120,000 cu ft)


Model Nuvair MCH36D Kubota
Fill Time* ~3 minutes
Charging Rate* 27 SCFM (764 L/min)
CFM FAD 22.5 CFM (637 L/min)
Maximum Operating Pressure 5000 psi (345 bar)
RPM 1300
Number of Stages 4
Oil Pressure 5.8 to 58 psi (0.4 to 4 bar)
Air Quality Grade E
Engine Kubota D1803 Diesel, 37 hp (28 kW), 2400 RPM
(L x W x H)
64 x 44 x 42 in
(163 x 112 x 107 cm)
Weight 1600 lb (726 kg)

*Based on 80 cu ft cylinder from 500 to 3000 psi.