- English
POLY high-pressure gear pump for the discharge of medium to high viscosity media from the reactor. The extra large inlet opening guarantees an even flow of product to the gear wheels even under vacuum or extremely low NPSH conditions.
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 Seal | (Vacuum) viscoseal · stuffing box · combination of viscoseal and stuffing box · double-action, buffered mechanical seal |
| Heating Systems | Heat transfer oil · steam |
| Viscosity | up to 40.000 Pas |
| Temperature | up to 350°C (662°F) |
| Inlet Pressure | Vacuum to max. 40 bar (580 psig) |
| Differential Pressure | Up to 250 bar (3625 psig) |
| 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) |