Breathing Air Compressor MARK III Silent TPS 345 l/min – 232 / 300 bar
The Coltri MARK III 345 ET Silent TPS is a powerful, soundproofed high-pressure breathing air compressor for professional applications with high air demand. With a delivery rate of 345 l/min (20.7 m³/h), this model is particularly suitable for larger dive centers, respiratory protection workshops, industrial facilities, or central filling stations with regular parallel filling of multiple cylinders.
The TPS version (Tropical Plus Superdry) has been specifically developed for demanding environmental conditions. An optimized cooling system ensures stable operating temperatures even at higher ambient temperatures or during extended running times. This maintains consistent compression performance and operational reliability.
The core of the system is the robust MCH 21 TPS high-pressure compressor unit with three compression stages. In combination with the standard dual Hyperfilter system, breathing air quality in accordance with DIN EN 12021 is achieved. The MARK III 345 ET is therefore consistently designed for reliable continuous operation and compliant air purification.
Filter cartridges are available in refillable or disposable versions and are designed for high operating pressures – ideal for intensive professional use.
Extended monitoring and control systems are available as optional equipment.
Technical Data MARK III 345 ET Silent TPS
- Delivery rate: 345 l/min (20.7 m³/h)
- Working pressure: 232 / 300 / 330 bar
- 3 compression stages (MCH 21 TPS)
- Drive power: 7.5 kW at 400 V three-phase
- Weight: approx. 191 kg
- Sound pressure level: approx. 74 dB(A)
- Dimensions (W × D × H): 112 × 73 × 91 cm
- Breathing air quality according to DIN EN 12021
- Two high-pressure filling connections (DIN 232 / DIN 300 / INT-Yoke selectable)
- Automatic final shutdown via electromechanical pressure switch
- Automatic condensate drain
- Dual Hyperfilter system with pressure maintaining valve
- Interstage pressure gauges
- Oil sump capacity: 1.8 liters
- Oil: Synthetic Coltri Oil ST 755
- Stainless steel valves in the 2nd and 3rd compression stages
- Oil change interval: 1 year or according to operating hours
- Permissible ambient temperature: -10 °C to +40 °C
- Maximum inclination: 15°
- Temperature monitoring inside the enclosure
- Rotation direction control
Product safety information
Manufacturer information:
Aerotecnica Coltri
Via dei Colli Storici 177
Desenzano del Garda (BS), Italien, 25015
https://www.coltri.com
