EFFICIENT LINE

Super Silent

Scroll Down

Super, but without making noise

The model Super Silent stands out for its high level of noise reduction. User-friendly, it has a high monitoring capability through control systems that track compressor operations.

Quiet performance in any environment

Super Silent is the ideal compressor for those seeking high performance with minimal noise impact. Designed to work unobtrusively, it is perfect for environments where comfort and quietness make all the difference.

Standard equipment includes: two high-pressure hose connections, interstage pressure gauges, oil level and internal cabin temperature control, rotation detector, electric motor, automatic condensate drain and autostop. Depending on the need, the most suitable pumping unit can be chosen.

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

3-stage high pressure pumping unit

Aluminum monoblock
Spray lubrication with tang immersed in oil
Suction filter: 10 um
Pipes, fittings and nuts made of AISI 316 stainless steel
Intermediate condensate separator after the second stage
High-pressure final condensate separators
Safety valves after each compression stage
High heat-dispersion die-cast aluminum cylinders with nicasil barrel coating
Forged aluminum connecting rods
Forged steel crankshaft
Stainless steel second and third stage valves
Heavy-duty roller bearings
Hardened steel third stage with 5 segments made of special cast iron
Second and third stages with thrust pads to eliminate lateral forces on the pistons
Filter system Maxifilter

Electric motor

One of the basic parts of the compressor: the motor transfers motion to the pumping unit through the belt. On this model, the single-phase or three-phase electric motor is available from 4 to 5 ,5 kW.

Purification system Maxifilter

The purification system Maxifilter enables reliable treatment of breathing air according to DIN EN 12021 when using original filter cartridges. Placed after the compressor 2nd and 3rd stage separator and before the pressure maintenance valve to create a first fundamental barrier against moisture. Filter capacity with inlet air at 20°C and 200 bar is 890 m³.

Electrical cabinet

ON/OFF switch with motor protection switch.
Electromechanical pressure switch that stops the compressor at the final pressure.
Drainage of all separators between individual stages and also of the final separator during compressor operation
Timer for automatic condensate drainage device.
Integrated no-load startup (automatic discharge each time the unit is turned off).
Condensate collection tank 5 liters, with silencer; capacity about 3 liters, for environmentally friendly disposal of condensate.
Interstage pressure gauges display the operating pressure for individual compression stages. This pressure information allows the tightness of the valves (inlet and outlet) of each stage to be checked and potential sources of failure to be quickly identified.

Frame

Silenced cab chassis made for environments requiring low noise level. Oil level and drain reported externally, control console equipped with inter-stage gauges, internal temperature indicator, presence and wrong phase sequence alarm, oil shortage alarm, and run stop and manual condensate drain controls allow easy operation and maintenance of the compressor. Made of steel with scratch-resistant powder coating in RAL 5015 blue.

3-stage high pressure pumping unit

Aluminum monoblock
Spray lubrication with tang immersed in oil
Suction filter: 10 um
Pipes, fittings and nuts made of AISI 316 stainless steel
Intermediate condensate separator after the second stage
High-pressure final condensate separators
Safety valves after each compression stage
High heat-dispersion die-cast aluminum cylinders with nicasil barrel coating
Forged aluminum connecting rods
Forged steel crankshaft
Stainless steel second and third stage valves
Heavy-duty roller bearings
Hardened steel third stage with 5 segments made of special cast iron
Second and third stages with thrust pads to eliminate lateral forces on the pistons
Filter system Maxifilter

Electric motor

Purification system Maxifilter

Electrical cabinet

ON/OFF switch with motor protection switch.
Electromechanical pressure switch that stops the compressor at the final pressure.
Drainage of all separators between individual stages and also of the final separator during compressor operation
Timer for automatic condensate drainage device.
Integrated no-load startup (automatic discharge each time the unit is turned off).
Condensate collection tank 5 liters, with silencer; capacity about 3 liters, for environmentally friendly disposal of condensate.
Interstage pressure gauges display the operating pressure for individual compression stages. This pressure information allows the tightness of the valves (inlet and outlet) of each stage to be checked and potential sources of failure to be quickly identified.

Frame

Highest air quality is the goal of a compressor Coltri

Air purity and quality are two indispensable features of our compressors. The air you breathe from Coltri compressors complies with EN 12021:2014 standards: that’s why with them you can work, have fun, practice in absolute safety.

Purification System Maxifilter

The Maxifilter is a high-performance purification system designed for use with high-pressure compressors intended for the production of breathing air. It uses a combined molecular sieve and activated carbon filter cartridge, ensuring effective removal of moisture, oil vapors, and other contaminants.

This system ensures that the compressed air meets the standards required for underwater, industrial and emergency use, offering maximum breathing safety and reliability.

Discover more

Featured on Efficient Line compressors

Standard Equipment

2 Cylinder connections of your choice of DIN 232, DIN 300 or INT/YOKE 232 bar

2 Filling hoses 1.2 m long

Pressure holding valve

Interstage control manometers

Filter system Maxifilter

Inside cabin temperature with automatic shutdown

Automatic rotation direction control

Pressure switch with automatic shutdown

Oil level control with automatic shutdown

Automatic condensate drain with conveying system into the canister

Frame color Blue RAL 5015

Technical specifications.

Type of gas

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

Suction pressure

Atmospheric max 300 millibars

Pressure rating

250 bar / 330 bar / 360 bar

Operating pressure

232 bar / 300 bar / 330 bar

Max working pressure

420 bar

Allowable temperature range

-10° C ÷ +40° C

Allowable altitude range

0 ÷ 1,500 m SLM

Maximum allowed inclination

6°

Design

Soundproof cabinet with sound absorber

Operating voltage, standard

400 V, 50 Hz

Other operating voltages

On three-phase electric motors at 60 hz power (kW / hp) increase by 20%.

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

Oil

Coltri ST 755 Synthetic Oil

Oil change interval

1 year / 1,000 h

Frame

Steel – Color Blue RAL 5015 – Powder coated – Scratch resistant

Compressor

Pump group flow rate

Measured while filling a 10-liter cylinder from 0-200 bartolerance +/- 5% at + 20 °C room temperature.

235 ET

235 l/min
14.1 m³/h
8.3 CFM

315 ET

315 l/min
18.9 m³/h
11.1 CFM

Purification system

Maxifilter

Cooling air flow

235 ET

1.440 m³/h

315 ET

2.180 m³/h

Weight

Standard model. Dimensions and weight may vary depending on accessories..

235 ET

162 kg
357 lb

315 ET

168 kg
370 lb

Dimensions

(W x D x H)

90 x 91 x 132 cm
35.4 x 35.8 x 52 in

Noisiness

235 ET

LpA 63,3 dB

315 ET

Engine

Power

235 ET

4 kW
5.5 Hp

315 ET

5.5 kW
7.5 Hp

Engine type

235 ET

Elettrico trifase

315 ET

Elettrico trifase

Operating voltage/frequency

Different voltage and frequency available upon request.

235 ET

400 V, 50 Hz

315 ET

400 V, 50 Hz

Rated current

235 ET

16.8 A

315 ET

12.6 A

Engine RPM (RPM)

235 ET

2.840

315 ET

2.850

Protection class

IP55

Compatible Accessories

Discover the options designed for your new compressor

EFFICIENT LINE

Super Silent

Super, but without making noise

The model Super Silent stands out for its high level of noise reduction. User-friendly, it has a high monitoring capability through control systems that track compressor operations.

Quiet performance in any environment

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.

Highest air quality is the goal of a compressor Coltri

Air purity and quality are two indispensable features of our compressors. The air you breathe from Coltri compressors complies with EN 12021:2014 standards: that’s why with them you can work, have fun, practice in absolute safety.

Purification System Maxifilter

Featured on Efficient Line compressors

Standard Equipment

Technical specifications.

Type of gas

Suction pressure

Pressure rating

Operating pressure

Max working pressure

Allowable temperature range

Allowable altitude range

Maximum allowed inclination

Design

Operating voltage, standard

Other operating voltages

Oil

Oil change interval

Frame

Compressor

Pump group flow rate

235 ET

315 ET

Purification system

Cooling air flow

235 ET

315 ET

Weight

235 ET

315 ET

Dimensions

Noisiness

235 ET

315 ET

Engine

Power

235 ET

315 ET

Engine type

235 ET

315 ET

Operating voltage/frequency

235 ET

315 ET

Rated current

235 ET

315 ET

Engine RPM (RPM)

235 ET

315 ET

Protection class

Compatible Accessories

C-monitor

Single pressure remote charging panel

Double pressure remote charging panel

CO SafeGuard – Carbon Monoxide Analyzer

ColTrimix

Cylinder connection DRV DIN 232 bar

Cylinder connection DRV DIN 300 bar

Cylinder connection DRV INT/YOKE 232 bar

Cylinder connection adapter DIN 232 bar INT YOKE

Multigas Analysis System CO + CO2 + H2O

1.5 meter 7/16" fill hose

2 meter fill hose 7/16"

3 meter 7/16" filling hose

Documentation Super Silent