Super, but without making a sound. 

The SUPER SILENT model stands out for its high level of noise reduction. Easy to use, it features a high monitoring capability using control systems that track compressor operations.

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.

The highest air quality is the goal of a Coltri compressor. 

Air purity and quality are two essential characteristics of our compressors. The air you breathe from Coltri compressors complies with the EN 12021: 2014 standards: this is why you can work, have fun and exercise with them in absolute safety.

Standard equipment 

2 Cylinder connections to choose from DIN 232, DIN 300 or INT / YOKE 232 bar 

2 whips 1.2m long 

Pressure maintenance valve 

Interstage control gauges 

Maxifilter filter system 

Cabin internal temperature with automatic switch-off 

Automatic direction of rotation control 

Pressure switch with automatic shutdown 

Oil level control with automatic shutdown 

Automatic condensate drain with conveyor system in the tank 

Frame color Blue RAL 5015

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 - 232 bar / 300 bar / 330 bar 

Max working pressure - 420 bar 

Permissible ambient temperature range - -10° C ÷ +40° C 

Permissible altitude 0 ÷ 1.500 m SLM 

Max permissible tilt - 6° 

Design - Cabinet insonorizzato con fonoassorbente 

Operating voltage, standard - 4000v/50Hz 

Other operating voltage 230v/50Hz / 230v/60Hz / 440v/60Hz 

Oil - Synthetic Coltri Oil ST 755 

Oil change interval - 1 year / 1,000 h 

Frame Steel thickness - 1.5 mm – color Blue RAL 5015 – Powder coating – scratch-resistant Noise LpA 65 dB 

Compressor 

Charging rate (Measured during 10 liters cylinder filling from 0-200 bar tolerance +/- 5% at + 20° C ambient temperature.) 

235 ET - 235 l/min 14.1 m3/h 8.2 CFM 

315 ET - 315 l/min 18.9 m3/h 11.1 CFM 

330 ET - 330 l/min 19.8 m3/h 11.6 CFM 

Purification system - Maxifilter 

Cooling air flow, min. 

235 ET - 1.440 m3/h 

315 ET - 2.180 m3/h 

330 ET - 2.400 m3/h 

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

235 ET - 192 kg 423 lb 

315 ET - 202 kg 445 lb 

330 ET - 202 kg 445 lb 

Dimensions (W x D x H) - 90 x 91 x 132 cm 35.4 x 35.8 x 52 in 

Motor 

Power 

235 ET - 4 kW 5.5 Hp 

315 ET - 5,5 kW 7.5 Hp 

330 ET - 7,5 kW 10 Hp 

Type 

235 ET - Three-phase electric 

315 ET - Three-phase electric 

330 ET - Three-phase electric 

Operating voltage/frequency (Different voltage / frequency available on request.) 

235 ET - 400v/50Hz / 230v/50Hz / 230v/60Hz / 440v/60Hz

315 ET - 400v/50Hz / 230v/50Hz / 230v/60Hz / 440v/60Hz 

330 ET - 400v/50Hz / 230v/50Hz / 230v/60Hz / 440v/60Hz

Rated current 

235 ET - 12.2 A 

315 ET - 13.2 A 

330 ET - 13.2 A 

Speed (RPM) 

235 ET - 2.850 1/min 

315 ET - 2.840 1/min 

330 ET - 2.850 1/min 

Protection class - IP55 (TEFC)