MCH22 / MCH30 Diesel Open Horizontal

8046-DL / 8048

Nuvair set out to develop a flagship commercial continuous-duty, high pressure compressor when we came up with the open horizontal models. These packages are built around the Coltri MCH22 and MCH30 pumping unit and can deliver up to 20.4 SCFM (577 L/min) at up to 6000 psi (414 bar).

The Nuvair commercial compressor series use our largest compressor block made from top quality materials: Connecting rods from aluminum alloy, stainless steel intercoolers and aftercoolers, and cylinders of special cast iron. The Coltri compressor block and a Kohler diesel are mounted on a steel plate that is placed into a marine grade, aluminum frame with a belt guard that can be left raw or powder-coated. Bottom drip pan and four-point lifting eyes round out the package. All packages come with an electric start, 60,000 cu ft of Grade E filtration, auto condensate drains, tach/hour meter, loadless start, independent vibration isolators, 9-gallon fuel tank, and an enclosed drip pan. These packages are built for continuous use and heavy-duty durability.


  • Grade E breathing air filtration
  • Dual filter filtration (60,000 cu ft)
  • Interstage pressure gauges
  • Low oil shutdown
  • Automatic condensate drains
  • High temperature shutdown
  • Hour meter
  • Two (2) fill whips
  • Diesel engine
  • Stainless steel intercoolers
  • Electric start and 12-volt battery with box
  • Visual CO and moisture indictator
  • Lifting eyes


  • Water cooling [ More Information ]
  • 7000 psi (482 bar) pressure
  • Stainless steel frame
  • Steel frame
  • Powder-coated blue paint
  • Auto pressure shutdown
  • Audible and visual CO and high temperature alarm with shutdown
  • Filtration upgrade (90,000 cu ft)
  • Certified lifting eyes
  • Large base mount fuel tank
  • Remote fill panel
  • Yanmar diesel or Hatz diesel


Model Open Horizontal MCH22D Open Horizontal MCH30D
Fill Time* Approx 5 minutes Approx 4 minutes
Charging Rate* 15.8 SCFM (447 L/min) 20.4 SCFM (577 L/min)
CFM FAD 13.2 CFM (374 L/min) 17 CFM (481 L/min)
Engine Make
and Model
Kohler 19 hp (14 kW)
SKU: 8046-DL

Kohler 19 hp (14 kW)
SKU: 8048

RPM 3600 3600
Max Operating Pressure 6000 psi (414 bar) 6000 psi (414 bar)
Number of Stages 4 4
Number of Fill Hoses 2 2
Condensate Drain Auto Drains Auto Drains
(L x W x H)
32 x 64 x 44 in
(81 x 163 x 112 cm)
32 x 64 x 44 in
(81 x 163 x 112 cm)
Weight 760 lb (345 kg) TBD
Lubrication Gear Driven Oil Pump lubrication, capacity 4.5 qt
Air Quality DIN 3188 - CGA Grade E - NFPA 1500 - EN12021

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

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