CNG HD

Professionally,
a compressor ahead.

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

High-pressure 4-stage methane 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 made of special treated steel
  • Stainless steel intake and exhaust valves
  • Stainless steel interstage cooling tubes
  • Separator after the 2nd, 3rd and 4th stage
  • Oil level sensor

Simplicity comes standard.

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

With them you are safe.

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

Standard equipment

Intake filter
Hitch-hiking
Double PED certified Hyperfilter filter system with molecular sieve
Natural gas refueling gun with direct action NGV1
Low pressure switch at gas inlet
Methane gas detector
Oil pump
Frame color RAL 7035

Technical data

Type of gas

Natural Gas – Methane

Intake pressure

Max 200 millibars

Nominal pressure

250 bar

Working pressure

200 bar o 250 bar (da definire all’ordine)

Max working pressure

200 bar o 250 bar

Permissible ambient temperature range

-10° C ÷ +40° C

Permissible altitude

0 ÷ 1.500 m SLM

Max permissible tilt

15°

Design

Cabinet insonorizzato

Operating voltage, standard

400 V; 50 Hz

Other operating voltage

230 V, 50 Hz / 230 V, 60 Hz / 400 V, 60 Hz

Oil

Synthetic Coltri Oil ST 755

Oil change interval

1 year / 1,000 h

Frame

Steel thickness 1.5 mm – color RAL 7035 – RAL 7016 Powder coating – scratch-resistant

Noise

LpA 66 dB

Compressor

Charging rate

Measured during 10 liters cylinder filling from 0-200 bar tolerance +/- 5% at + 20° C ambient temperature.
330 ET

330 l/min
19.8 m3/h
11.6 CFM

400 ET

400 l/min
24 m3/h
14.1 CFM

550 ET

550 l/min
33 m3/h
19.4 CFM

Purification system

Maxifilter

Cooling air flow, min.

330 ET

3.000 m3/h

400 ET

3.000 m3/h

550 ET

3.000 m3/h

Weight

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

451 kg
994 lb

400 ET

452 kg
1.003 lb

550 ET

463 kg
1.020 lb

Dimensions

(W x D x H)

79 x 130 x 155 cm
31 x 54 x 61 in

Motor

Power

330 ET

9 kW
12 Hp

400 ET

11 kW
15 Hp

550 ET

15 kW
20 Hp

Type

330 ET

Three-phase electric

400 ET

Three-phase electric

550 ET

Three-phase electric

Operating voltage/frequency

Different voltage / frequency available on request.
330 ET

400/690 V, 50 Hz

400 ET

400/690 V, 50 Hz

550 ET

400/690 V, 50 Hz

Rated current

330 ET

13.2 A

400 ET

13.2 A

550 ET

13.2 A

Speed (RPM)

330 ET

1.050 1/min

400 ET

1.250 1/min

550 ET

1.420 1/min

Protection class

IP55 (TEFC)

The available models of CNG HD

(Non-standard models available upon request)

Discover CNG HD at 360°