Mark III Silent

Control is everything.

Designed with control systems that allow effective monitoring of operations: interstage pressure, oil level, cabin internal temperature and direction of rotation detector.

3-stage high pressure pumping unit.

  • Monobloc in aluminum,
  • Gooseneck in forged steel
  • Splash lubrication
  • Forged aluminum connecting rods
  • Main roller bearings
  • Roller connecting rod bearings
  • 1st and 2nd stage cylinders in aluminum with hard nicasil coating
  • 2nd and 3rd stage slide guide cylinders in aluminum with hard nicasil coating
  • 3rd stage cylinder in special treated steel.
  • Stainless steel intake and exhaust valves
  • Interstage cooling pipes in stainless steel
  • Separator after the 2nd and 3rd stage
  • Safety valves after each stage
  • Maxifilter filter system
  • Oil level sensor

Maxifilter motor and purification system

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

The Maxifilter purification system enables reliable treatment of the breathing air according to DIN EN 12021¹ when using original filter cartridges. Placed after the last compressor separator and before the pressure maintenance valve, it has the separator after the 2nd and 3rd stage to create a first, fundamental barrier against humidity. The filtering capacity with inlet air at 20 ° C and 200 bar is 620m³.

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 the individual stages and also of the final separator during compressor operation.
  • Timer for automatic condensate drain.
  • Integrated no-load start (automatic drain every time the unit is switched off).
  • 5 liter condensate collection tank, with silencer; capacity of about 3 liters, for the ecological disposal of condensate.
  • Interstage pressure gauges display the working pressure for the individual compression stages. This pressure information allows you to check the tightness of the valves (inlet and outlet) of each stage and to quickly identify potential sources of failure.

Chassis

Silenced cab chassis designed and built to facilitate maintenance operations. The tilting motor-holder plate ensures constant V-belt tension. Compressor management and maintenance are facilitated by important devices and tools: the oil level and drain shown outside, the control console equipped with inter-stage pressure gauges, the internal temperature indicator, the presence alarm and incorrect phase sequence, the oil lack alarm and the start stop and manual condensate drain commands.

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.

Specifications

Standard equipment

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

Motor

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

Single-phase electric
4 kW – 5.5 Hp
2.800 engine revolutions
(RPM)
230 V, 50 Hz, 24 A
3.400 engine revolutions
(RPM)
230 V, 60 Hz, 22 A
Three-phase electric
4 kW – 5.5 Hp
2,850 engine revolutions (RPM)
230/400 V
50 Hz
16.8 / 9.7 A
3,420 engine revolutions (RPM)
230/400 V
60 Hz
16.8 / 9.7 A
3,420 engine revolutions (RPM)
440/480 V
60 Hz
9.7 A
Single-phase electric
5.5 kW – 7.5 Hp
2,850 engine revolutions (RPM)
230 V
50 Hz
25.2 A
3,450 engine revolutions (RPM)
230 V
60 Hz
25.2 A
Three-phase electric
5.5 kW – 7.5 Hp
2,840 engine revolutions (RPM)
230/400 V
50 Hz
21.8 / 12.6 A
3,410 engine revolutions (RPM)
230/400 V
60 Hz
21.8 / 12.6 A
3,410 engine revolutions (RPM)
440/480 V
60 Hz
12.6 A

Pumping group

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

Range:
210 l/min
12,6 m³/h
7,4 CFM (ft³/min)
Number of laps:
1,040 RPM
Range:
235 l / min
14.1 m³ / h
8.3 CFM (ft³ / min)
Number of laps:
1,240 RPM
Range:
270 l / min
16.2 m³ / h
9.5 CFM (ft³ / min)
Number of laps:
1,600 RPM
Range:
315 l / min
18.9 m³ / h
11.1 CFM (ft³ / min)
Number of laps:
1,600 RPM

Operating pressure

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

232 bar
3,300 PSI
From 232 to 420 bar
3,300 to 6,100 PSI
232 bar
3,300 PSI
From 232 to 420 bar
3,300 to 6,100 PSI

Charging time

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

10 minutes

(10 l tank empty
at 0-200 bar)

8.30 minutes

(10 l tank empty
at 0-200 bar)

6.40 minutes

(10 l tank empty
at 0-200 bar)

6.20 minutes

(10 l tank empty
at 0-200 bar)

Noisiness

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

86 dB (Lwa guaranteed)
83 dB (Lwa measured)
63 dB (Lpa measured)
86 dB (Lwa guaranteed)
83 dB (Lwa measured)
63 dB (Lpa measured)
88 dB (Lwa guaranteed)
85 dB (Lwa measured)
65 dB (Lpa measured)
88 dB (Lwa guaranteed)
85 dB (Lwa measured)
65 dB (Lpa measured)

Dry weight

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

162 kg / 357 lb
162 kg / 357 lb
168 kg / 370 lb
168 kg / 370 lb

Dimensions

Mark III Silent 210 EM

Mark III Silent 235 ET

Mark III Silent 270 EM

Mark III Silent 315 ET

103 x 73 x 91 cm (W x D x H)
40.5 “x 28.7” x 35.8 “(W x D x H)
103 x 73 x 91 cm (W x D x H)
40.5 “x 28.7” x 35.8 “(W x D x H)
103 x 73 x 91 cm (W x D x H)
40.5 “x 28.7” x 35.8 “(W x D x H)
103 x 73 x 91 cm (W x D x H)
40.5 “x 28.7” x 35.8 “(W x D x H)

Optional

C-Monitor

C-monitor

Final filter monitoring system, oil change and technical interface.

Remote Charging Panel – Single press

Remote charging panel. Available with 4 connections to choose between QR DIN 232 bar, QR DIN 300 bar or QR INT / YOKE.

Included in the product:

  • 4 cylinder connections
  • 1 Manometer
  • 4 HP filling hoses 1.20 m – 3.9 ft
  • 1 HP hose 3 m – 9.8 ft

Remote Charging Panel – Double Press

Remote charging panel. Available with 2 QR DIN 232 bar connections and 2 QR DIN 300 bar connections.

Included in the product:

  • 4 cylinder connections
  • 1 Manometer
  • 4 HP filling hoses 1.20 m – 3.9 ft
  • 1 HP hose 3 m – 9.8 ft

Filling connections

DRV DIN 232 bar
DRV DIN 300 bar
DRV DIN 232 bar con manometro
DRV DIN 300 bar con manometro
DIN / INT adapter
DRV INT/YOKE 232 bar

SAM Multigas Analysis System

The Coltri Multigas Analysis System is a measuring instrument capable of monitoring air quality. Its application includes continuous monitoring of environmental gases, hyperbaric chambers, safety, medical, air quality.

Tornado cooler

The TORNADO chiller is an accessory for our recharging stations dedicated to professional use that operates between the separators and the filtering system. Available in 350 or 420 bar version.

HOW TORNADO WORKS

The incoming hot and humid air passes through the evaporator of this machine, where it cools.

This allows the moisture to condense. The condensate is then easily removed from the separator, ensuring a general improvement in the operation of the charging station over time and the longevity of its filters.

Allows up to 3 times longer filter life.

Filling hoses

Available in 1.5, 2, 3, 4, 5, 8 and 10 meters.

Mark III Silent models available

(Non-standard models available upon request)

Discover Mark III Silent at 360 °!