CNG HD
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LINE CNG

CNG HD

Professionally,
a forward compressor

Designed for medium-sized charging stations, the series compressors CNG HD can compress up to 250 bar of previously treated and filtered natural gas and biomethane from the feed line. Four compression stages and low RPM make for a machine suitable for professional use. The remote control panel (5-meter cable) provides all indications for operating in maximum safety. The compressors are equipped with a 4.5 m high-pressure hose and a dispensing gun with NGV1 direct connection, suitable for charging pressures up to 250 bar.

Watch it closely

Simplicity comes as standard

Imagine having a compressor capable of great performance and endowed with extraordinary robustness. What would all this be without absolute simplicity in operating it? We believe that’s what innovation is for: to make it simpler.

And now for all the details
4-stage high pressure pumping unit for methane
  • Aluminum monoblock
  • Forced lubrication with low-pressure gear pump
  • Input filter
  • Pipes, fittings and nuts made of AISI 316 stainless steel
  • Intermediate condensate separators after the second and third stages
  • Double-acting high-pressure final condensate separators
  • Safety pressure switch after each compression stage
  • Special cast iron cylinders with low roughness lapping
  • Forged aluminum connecting rods
  • Forged steel crankshaft
  • High-flow second- and third-stage valves
  • Roller Bearings for intensive work
  • Hardened steel fourth stage with 6 special cast iron piston rings
  • Second and third stages with thrust pads to eliminate lateral forces on the pistons
  • Filter system Hyperfilter
Electric motor

One of the key parts of the compressor: the motor transfers motion to the pumping unit through the belt. A three-phase electric motor from 9 to 15 kW is available on this model.

Purification system Hyperfilter

Placed after the last compressor separator and before the pressure maintenance valve, the purification system Hyperfilter 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 stages of the purification circuit makes it possible to extract as much moisture as possible. The filtering capacity with inlet air at 20°C and 200 bar is 3,050 m³.

Electrical cabinet
  • Control panel
  • Emergency button
  • ON/OFF switch
  • Operating hour meter
  • Gas temperature
  • Voltage presence indicator light
  • Wrong direction indicator light
  • Oil level sight glass
  • Gas temperature alarm indicator light
  • Pressure alarm light 1st, 2nd and 3rd stage
  • Suction pressure alarm light
  • Compressor light at work
  • Power button
  • Stop button
Frame

Silenced steel cab chassis with scratch-resistant powder coating in RAL 7016 Anthracite and RAL 7035 Gray.

With them you are safe

Compressors CNG Coltri put safety first: they are equipped with sensors that stop the machine in case of leakage; and they are equipped with solenoid valves at the outlet and inlet to regulate machine and system operation.

Standard Equipment

Input filter
Hitchhiking
Dual filter system Hyperfilter certified PED with molecular sieve
NGV1 natural gas refueling gun with direct action
Low pressure switch at gas inlet
Methane gas detector
Oil pump
Frame color Anthracite RAL 7016 and Gray RAL 7035

Technical specifications.

Compressor

Engine

Documentation CNG HD

Check out all the downloadable documents

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