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Dive compressor Force Four
for commercial divingbreathing airpiston

Dive compressor - Force Four - AEROTECNICA COLTRI S.p.A. - for commercial diving / breathing air / piston
Dive compressor - Force Four - AEROTECNICA COLTRI S.p.A. - for commercial diving / breathing air / piston
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Dive compressor - Force Four - AEROTECNICA COLTRI S.p.A. - for commercial diving / breathing air / piston - image - 3
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Go to the AEROTECNICA COLTRI S.p.A. website for more information

Characteristics

Applications
dive, for commercial diving
Type
breathing air
Technology
piston, reciprocating, gear
Power source
electric
Lubrication
oil-lubricated, oil-injected
Pressure

Max.: 420 bar
(6,092 psi)

Min.: 232 bar
(3,365 psi)

Flow

24 m³/h, 27 m³/h, 39 m³/h
(848 ft³/h, 953 ft³/h, 1,377 ft³/h)

Power

Max.: 11 kW
(15 hp)

Min.: 8 kW
(11 hp)

Net weight

250 kg, 260 kg
(551 lb, 573 lb)

Length

124 cm
(49 in)

Width

71 cm
(28 in)

Height

80 cm
(31 in)

Description

Overview
  • Heavy-duty 4-stage high-pressure pumping unit designed for breathing-air production and other high-pressure applications.
  • Monoblock aluminium construction with integrated Hyperfilter purification for compliance with DIN EN 12021 when original cartridges are used.


Pumping unit — main features
  • Aluminum monoblock construction.
  • Forced lubrication via low-pressure gear pump; minimum lubricating oil pressure switch and oil pump with level control and automatic shutdown.
  • Suction filter: 10 µm.
  • Pipes, fittings and nuts in AISI 316 stainless steel.
  • Intermediate condensate separators after the 2nd and 3rd stages and a final separator with automatic condensate drain (standard interval configurable).
  • Safety valves after each compression stage.
  • Special cast-iron cylinders with low-roughness lapping; hardened steel third stage with 6 special cast-iron bands.
  • Second and third stages fitted with thrust pads to eliminate lateral piston forces.
  • High-flow valves for stages 1–3 and heavy-duty roller bearings.
  • Forged aluminum connecting rods and forged steel crankshaft.


Electric motor
  • Motor transmits motion to the pumping unit via V-belt; tilting motor carrier plate ensures consistent belt tension.
  • Available options: single-phase 7.5 kW or three-phase 7.5–11 kW.


Hyperfilter purification system
  • High-capacity two-cartridge system mounted after the final separator and before the pressure-holding valve: first cartridge molecular sieve (moisture removal), second cartridge molecular sieve + activated carbon (oil vapour and contaminant removal).
  • When using original cartridges, enables breathing-air treatment according to DIN EN 12021.
  • Filtering capacity (inlet air 20°C at 200 bar): 3,050 m³.


Electrical cabinet
  • Motor protection switch.
  • Fixed calibration pressure switch: 232 or 300 bar.
  • Autostart with pressure differential 15 bar (optional).
  • Transformer (when configured).
  • Automatic drainage of all intermediate separators and final separator during operation; timer for condensate drain.
  • Interstage pressure gauges mounted in the frame to display operating pressure of each compression stage.


Frame and controls
  • Open frame for easy maintenance and transport; frame in powder-coated steel RAL 9005.
  • Thermoformed protective casing channels cooling air over cylinders and interstage piping to maintain compression efficiency.
  • Control console with interstage pressure gauges, internal temperature indicator, phase-sequence and oil-level alarms, run/stop and manual condensate drain controls.


Standard equipment
  • 4 cylinder connections selectable: DIN 232, DIN 300 or INT/YOKE 232 bar.
  • 4 whips (hoses) 1.2 m long.
  • Pressure holding valve and interstage control manometers.
  • Dual PED-certified Hyperfilter system mounted on a stand-alone structure.
  • Automatic condensate drain; oil level control with automatic shutdown; oil pump included.
  • Frame colour: Black RAL 9005.


Compatible accessories (examples)
  • Remote charging panels (single and double pressure) and remote refill panels with lever taps.
  • Cylinder connections and adapters (DIN 232, DIN 300, INT/YOKE 232).
  • Presec system, Tornado chiller, fill hoses and ColTrimix options.


Technical specifications
  • Model / series: Force Four.
  • Compression stages: 4-stage high-pressure pumping unit.
  • Motor options: single-phase 7.5 kW; three-phase 7.5–11 kW.
  • Suction filter rating: 10 µm.
  • Materials: pipes/fittings/nuts AISI 316 stainless steel; special cast-iron cylinders; forged aluminum connecting rods; forged steel crankshaft.
  • Bearings: heavy-duty roller bearings.
  • Third stage: hardened steel with 6 special cast-iron bands.
  • Lubrication: forced via low-pressure gear pump; minimum lubricating oil pressure switch; oil pump and oil-level control with automatic shutdown.
  • Condensate management: separators after 2nd and 3rd stages; automatic condensate drain (configurable).
  • Safety: safety valves after each stage; motor protection switch.
  • Filtration / purification: Dual PED-certified Hyperfilter (molecular sieve + molecular sieve+activated carbon); capacity 3,050 m³ (20°C @ 200 bar) with original cartridges.
  • Pressure options and controls: fixed calibration pressure switch 232 or 300 bar; optional autostart differential 15 bar; pressure holding valve and interstage gauges.
  • Cylinder connections: configurable DIN 232 / DIN 300 / INT-YOKE 232 bar; standard whips 4 x 1.2 m.
  • Frame: open frame, thermoformed protective casing, tilting motor carrier plate; powder-coated steel RAL 9005.

Catalogs

Go to the AEROTECNICA COLTRI S.p.A. website for more information

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.