Oil & Gas

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Screw Pumps with Internal Bearings

Application

As fuel-oil supply-, ring lin and transfer pump. Lubricating oil supply and circulating pump, tank drain pump, cooling-oil and hydraulic pump. Generally applicable to self-lubricating liquids without any content of grinding particles.

Design

• Three spindle, self-priming screw pump for low noise and continuous flow. As overpressure protection a safety valve is provided. The pump can be delivered with heating device electric or steam

Connections

• Suction and discharge on the same level (in-line).

Temperature

• max. approx 150 °C (Please consider recommended inlet pressure for fuel pumps up to max. 150 °C)

Pump pressure

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

Capacity

• 0,5 – 250 m3/h

Shaft sealing

• Radial sealing ring, stuffing box, mechanical seal

Bearings of the pump

• spindles are supported in replaceable bearing bushes or in bearing housings. A roller bearing on the drive end cover used for the axial fixing of spindle block. The axial thrust, which acts on the supply screws is hydraulically balanced.

Suction lift

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

Viscosity

• marine standard up to 760 cst