Dive compressor Ergo Petrol

three-stagebreathing airpiston

Overview
The Ergo Petrol is a portable petrol-driven breathing air compressor from Coltri's Efficient Line, engineered for mobile high-efficiency production of breathing-quality air. It combines a 3-stage high-pressure pumping unit with the Maxifilter purification system to provide reliable breathing air for diving, industrial and emergency applications.

Key features

• 3-stage high-pressure pumping unit (aluminum monoblock)
• Spray lubrication with tang immersed in oil
• 10 µm suction filter
• Pipes, fittings and nuts in AISI 316 stainless steel
• Intermediate condensate separator after second stage; high-pressure final condensate separators
• Safety valves after each compression stage
• Die-cast aluminum cylinders with Nicasil liner for high heat dispersion
• Forged aluminum connecting rods; forged steel crankshaft
• Stainless steel valves on 2nd and 3rd stages; hardened steel 3rd stage with 5 cast-iron segments
• Heavy-duty roller bearings; thrust pads on 2nd and 3rd stages to eliminate lateral piston forces
• Filtration system: Maxifilter (molecular sieve + activated carbon)

Engine
Equipped with a Honda GX 270 petrol engine (6.6 kW). Power is transmitted to the pumping unit via belt drive; a tilting motor carrier plate ensures constant V-belt tension.

Purification system — Maxifilter
The Maxifilter uses a combined molecular sieve and activated carbon cartridge to remove moisture, oil vapors and contaminants. When original cartridges are used, it enables breathing-air treatment compliant with DIN EN 12021. Filter capacity: 890 m³ (inlet air 20°C, 200 bar).

Frame and casing
Open steel frame with scratch‑resistant powder coating (RAL 9005) for easy maintenance and transport. Thermo-formed protective casing channels cooling air over cylinders and inter-stage pipes to maintain compression efficiency.

Standard equipment

• 2 cylinder connections — choice of DRV DIN 232 with gauge, DRV DIN 300 with gauge or DRV INT/YOKE 232 bar
• 2 filling hoses, 1.2 m long
• Pressure-holding valve
• Maxifilter purification system
• Oil level control with automatic shutdown
• Frame color: Black RAL 9005

Applications
Designed for diving and multiple professional/industrial breathing-air applications requiring portable, high-efficiency, high-quality compressed breathing air.

Technical specifications

• Pumping unit: 3-stage high-pressure unit, aluminum monoblock
• Engine: Honda GX 270 petrol — 6.6 kW
• Lubrication: spray lubrication with tang immersed in oil
• Suction filtration: 10 µm
• Pipework & fittings: AISI 316 stainless steel
• Condensate separation: intermediate after 2nd stage; high-pressure final separators
• Safety: safety valves after each stage; oil level control with automatic shutdown
• Cylinders: die-cast aluminum with Nicasil liner
• 3rd stage: hardened steel with 5 special cast-iron segments
• Purification: Maxifilter (molecular sieve + activated carbon), capacity 890 m³ @ 20°C / 200 bar; DIN EN 12021 compliant with original cartridges
• Standard fittings: DRV DIN 232 / DRV DIN 300 / DRV INT/YOKE 232 bar
• Filling hoses: 2 × 1.2 m
• Frame: open steel frame, powder coated RAL 9005; thermo-formed protective casing