Calder Offshore Vacuum Units

Calder diesel-powered vacuum units are designed for use in Zone 2 hazardous area environments for operation in accordance with ATEX and IECEx. The MultiVac unit follows the same principles of quality, reliability, safety, ease of operation and ease of maintenance as our successful range of MultiJet high pressure water jetting machines.

The offshore vacuum units can utilise positive displacement or liquid ring technologies to provide vacuum performance with pressures up to 810 mbar and flows up to 50m³/min.

The MultiVac unit is used by customers for a variety of vacuum applications including: material/waste removal, chemical and liquid recovery, bulk powder removal, ventilation, and pigging, descaling and de-sanding operations.

Whether crash frame mounted for weight minimization, or container mounted for maximum protection and noise attenuation, our range of standard vacuum units and our bespoke design capabilities ensure we can provide the right vacuum unit for your offshore, hazardous area requirements.

Positive Displacement Blowers:

MultiVac Offshore Vacuum Unit MultiVac Offshore Vacuum Unit

MultiVac 40-500-D-Z2-CS

  • Diesel engine: 57 kW at 2,000 rpm
  • Exhaust gas cooler, spark arrestor
  • Vacuum blower rated: 500 mbar @ 38m³/min
  • Pneumatic control system and shutdowns
  • Vortex separator for solids removal
  • Solids tank capacity: 1.7 m³
  • Waste tank drain pump - automatic
  • Waste tray capacity: 1.0 m³
  • Hazardous area rating:
    Zone 2 IECEx, ATEX 94/9/EC Group II Cat 3G, Gas Group IIA Temp Class T3

MultiVac 120-810-D-Z2-CS

  • Diesel engine: 160 kW at 2,100 rpm
  • Exhaust gas cooler, spark arrestor
  • Vacuum blower rated: 810 mbar
    @ 20m³/min
  • Pneumatic control system and shutdowns
  • Vortex separator for solids removal
  • Solids tank capacity 1.7 m³
  • Waste tray capacity 1.0 m³
  • Hazardous area rating:
    Zone 2, ATEX 94/9/EC Group II Cat 3G,
    Gas Group IIA Temp Class T3



Liquid Ring Vacuum Pumps:

MultiVac Offshore Vacuum Unit MultiVac Offshore Vacuum Unit

MultiVac 90-500-D-Z2-CF

  • Diesel engine: 93 kW at 2,100 rpm
  • Exhaust gas cooler, spark arrestor
  • Liquid ring rated: 500 mbar and 41 m³/min
  • Pneumatic control system and shutdowns
  • Syphon filter tank capacity: 0.25 m³
  • Drain for solids removal
  • Water recovery tank: 1 m³
  • Hazardous area rating:
    Zone 2, ATEX 94/9/EC Group II Cat 3G, Gas Group IIA Temp Class T3

MultiVac 130-500-D-Z2-CS

  • Diesel engine: 145 kW at 1,500 rpm
  • Exhaust gas cooler , spark arrestor
  • Oil free liquid ring pump
  • Liquid ring rated: 500 mbar and
    50 m³/min
  • Pneumatic control system and shutdowns
  • Syphon filter tank capacity: 0.25 m³
  • Drain for solids removal
  • Water recovery tank: 1 m³
  • Hazardous area rating:
    Zone 2, ATEX 94/9/EC Group II Cat 3G, Gas Group IIA Temp Class T3

Offshore Vacuum Unit - Calder

MultiVac Hazardous Area Calder (7040)

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