Coltri Compact Nitrogen Booster

With a maximum operating pressure of 5000 psi (345 bar), Coltri Compact Nitrogen Boosters compress and purify nitrogen gas. Available with a 5.5 or 7.5 hp electric motor that delivers 7-9.4 CFM (200-265 L/min).

A booster compressor receives gas under pressure and is therefore more efficient and pumps more gas per horsepower than a standard compressor. Charging rate is variable and is based upon intake pressure that can vary between 29-73 psi (2-8 bar).

A nitrogen booster is equipped with a service stage to recover nitrogen blowby from the crankcase. The booster units are vented at each start-up to remove the nitrogen amount which eventually has been contaminated during booster standby.

6914.2 / 6915.2

Standard Features

  • Compact cabinet for quiet, stationary operation
  • Conveniently located control panel with hour meter and alarms
  • Magentic starter with thermal overload protection
  • Inlet regulator with gauge and pressure switch
  • Inlet small volume tahnk to absorb surges
  • Stage pressure gauges
  • Pressure relief valves at all stages
  • Automatic condensate drains and collector
  • High temperature warning
  • Low oil alert
  • External oil level sight glass indicator with oil drain
  • Nitrogen purification system with molecular sieve
  • Steel frame with scratch-proof powder coating
  • Pressure maintaining valve
  • Final pressure gauge


SKU  6914.2 6915.2
Charging Rate 9.4 CFM (265 L/min) 10.8 SCFM 7 CFM (200 L/min) 8.4 SCFM
Power Three-phase electric motor Three-phase electric motor
Motor Power 7.5 hp (5.5 kW) 5.5 hp (4 kW)
Power System

208-230 V / E3 / 60 Hz
Required: 80 A breaker and #8 wire

Stages 3
Maximum Working Pressure 5000 psi (345 bar)
Dry Weight 450 lb (204 kg)
Noise Level 81 dB at 3 m
Dimensions (L x W x H) 41.5 x 27.75 x 3.25 in (105 x 70 x 82 cm)