Coltri MCH 22 – FORCE FOUR – 450L


The compact size of this light weight 3-Stage Compressor makes it very easy to transport. It is an extremely reliable unit and is ideal for filling 30—50  tanks (80cf) per day.

MCH22 , , ,

He goes the extra mile
To give you the best.

The FORCE FOUR model meets professional needs that require large charging capacities in hot, poorly ventilated environments or tropical countries. It is equipped with an intuitive control panel and electric motor. The pumping unit, a choice of 3 most powerful, is exposed to ensure a better cooling cycle. It is equipped with the Hyperfilter purification system mounted on a stand-alone system, with automatic condensate drainage. For longer filter life, the Tornado high pressure dryer is recommended. Available as options: the Presec system for filter saturation control, Megafilter oversized filter cartridges, and 2- or 4-outlet remote refill panel.

4-stage high pressure pumping unit.

  • Monobloc in aluminum,
  • Crankshaft in forged steel
  • Forced lubrication on the 4th stage cylinder by gear pump
  • Oil filtration
  • Aluminum connecting rods
  • Main roller bearings
  • Roller connecting rod bearings
  • 1st, 2nd and 3rd stage cylinders in special cast iron
  • 4th stage cylinder in special treated steel.
  • Low oil pressure switch.
  • Stainless steel intake and exhaust valves
  • Interstage cooling pipes in stainless steel
  • Separator after the 2nd, 3rd and 4th stage
  • Safety valves after each stage
  • Oil level sensor
  • Prepared for Hyperfilter filter system

Purification at the highest level.

Placed after the last compressor separator and before the pressure holding valve, the Hyperfilter purification system enables reliable treatment of the breathing air according to DIN EN 12021¹ when using original filter cartridges. The separator present between the 2nd and 3rd stage of the purification circuit allows to extract the greatest possible humidity. The filtering capacity with inlet air at 20 ° C and 200 bar is 4300 m³.

Compressor control and automatic condensate drainage system

  • Motor protection switch.
  • Fixed calibration pressure switch 232 or 300 bar.
  • Autostart with pressure differential 15 bar. (optional)
  • Transformer.
  • Drainage of all separators between individual stages and also of the final separator during compressor operation (standard drainage interval every 15 minutes for a period of 6 seconds).
  • Timer for automatic condensate drain.
  • Interstage pressure gauges display the working pressure for the individual compression stages. This pressure information allows you to check the tightness of the valves (inlet and outlet) of each stage and to quickly identify potential sources of failure.

Interstage pressure gauges are mounted in the compressor frame.

Standard equipment

4 Filling connections of your choice of DIN 232, DIN 300 or INT/YOKE 232 bar
4 filling hoses of 1.2 m in length
Pressure maintenance valve
Interstage control gauges
Double PED certified Hyperfilter filter system
Purification system on “stand-alone” structure
Automatic condensate drain
Oil level control with automatic shutdown
Oil pump
Frame color Black RAL 9005

Technical data

Type of gas

Breathing air (EN 12021) – Nitrox 40% max O2 – Helium – Nitrogen

Intake pressure

Atmospheric max 300 millibars

Nominal pressure

250 bar / 330 bar / 360 bar

Working pressure

250 bar / 330 bar / 360 bar

Max working pressure

420 bar

Permissible ambient temperature range

-10° C ÷ +40° C

Permissible altitude

0 ÷ 1.500 m SLM

Max permissible tilt



Cabinet aperto

Operating voltage, standard

230 V, 60 Hz  400 V, 50 Hz

Other operating voltage

230 V 50 Hz / 440 V 60 Hz / 230 V 60 Hz

On three-phase electric motor at 60Hz the power (kW / Hp) increases by 20%..


Synthetic Coltri Oil ST 755

Oil change interval

Every year / 1,000 h


Steel thickness 1.5 mm – Color RAL Black 9005 – Powder coating – scratch-resistant


Charging rate
Measured during 10 liters cylinder filling from 0-200 bar tolerance +/- 5% at + 20° C ambient temperature.
450 l/min
27 m3/h
15.9 CFM
Purification system 2 Hyperfilter
Cooling air flow, min. 4.050 m3/h

Standard model. Weight and dimensions may vary depending on accessories.

250 kg
551 lb

(W x D x H)

115 x 60 x 79,6 cm
45.3 x 23.6 x 31.3 in


Power 7.5 kW
10 Hp
Type Single-phase electric

Three-phase electric

Operating voltage/frequency

Different voltage / frequency available on request.

400 V, 50 Hz
Rated current 15 A
Speed (RPM) 2.870
Protection class IP55 (TEFC)

1,000 hours or 1 year, whichever comes first. Warranty is voided in case warranty guidelines as provided by AWDS were not followed.

Warranty repairs: ONLY labors and PARTS are covered under warranty. Travel expenses, accommodation and food of the technician will be covered by the customer/owner of the compressor.

We use cookies to improve your experience on our website. By browsing this website, you agree to our use of cookies.