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Screw Pumps with External Bearings

Application

Marine: as cargo pumps for the transfer of H.F.O., M.D.O. gasoline etc. as a coolant pump or lubrication pump for marine diesel engines, turbines and gearboxes, for ballast transfer.

Refinery: for the transfer of mazut, waste oil, fuel oil, lubricating oil, turbine hydraulic and gear oil, naphta and bitumen.

Chemical industry: for the transfer of thin, highly viscous, neutral or aggressive mediums.

Special feature

• pump is able to pump non-lubricating medium such as for example water

Design

• For the transfer of mazut, waster oil, fuel oil, lubricating oil, turbine hydraulic and gear oil, naptha and bitumen.

Connections

• suction at both sides (big advantage), discharge at top

Temperature

• max. approx. 120 °C

Pump pressure

• normal up to 16 bar, for medium with good self-lubricating property higher pressures up to 100 bar are available

Capacity

• 10 – 1500 m3/h

Total head

• up to 160 m

Shaft sealing

• stuffing box, mechanical seal

Materials

• casing: cast steel, steel welded, spheroidal graphite iron, bronze, aluminium and stainless steel

Driver

• electric motor, diesel engine, steam turbine, mechanically, electrically or hydraulically controlled variable speed drives, V-belt drive.

Bearings of the pump

• the bearings are arranged outside the supply room. Driving of the running spindle is driven via a cogwheel gearing.

Suction lift

• max. 8 m vacuum metric depending on viscosity and speed

Viscosity

• up to 15000 ° E or more, if a free flow of the liquid to the pump or a supply by a booster is ensured.