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POLY - Discharge Gear Pump

Offered with either a round inlet port, by means of which the suction flange of the pump is directly connected to the outlet flange of the reactor or as a low NPSH version, where the pump is connected between the pump and reactor flanges, in order to achieve an even larger and shorter inlet port.

Housing

Non-alloyed and alloyed steels · cast steel · with optional surface coating

Gears

Nitrated steel · tool steel · special steel · with optional surface coating · helical gearing · herringbone gearing

Friction Bearings

Tool steel · NiAg (nickel-silver) · Al-bronze · special materials · with optional surface coating

Shaft Seals

(Vacuum) viscoseal · stuffing box · combination of viscoseal and stuffing box · double-action, buffered mechanical seal

Heating Systems

Heat transfer oil · steam

Operating Parameters

Viscosity

up to 40000 Pas

Temperature

up to 350°C (662°F)

Inlet pressure

Vacuum to max. 40 bar (580 psig)

Differential Pressure

Up to 250 bar (3225 psig)

The values listed are maximum values and must not coincide under certain circumstances.

Pump Sizes

From 22/22 (4.7 cm3/U - 10 kg/h) up to 280/280 (12,000 cm3/U - 30,000 kg/h). Intermediate sizes, with wider gear wheels for lower differential pressure, are available as standard, e.g. 152/254 (3,170 cm3/U).

Details

  • WITTE PUMPS & TECHNOLOGY GmbH

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