BOOSTER - Gear pump for polymer processing The reliable transfer and booster gear pump for polymer processing BOOSTER gear pumps are used in the polymerisation process, to boost the pressure of medium to high viscosity media. They transport pre-polymers and polymers, e.g. PET, PBT, PS, ABS any many more, very gently Heating is either by way of heat transfer oil or steam. The core components like shafts and friction bearings originate from the WITTE building block system. Technical Features Housing Heat resistant carbon steel, e.g. 1.6582 · rust-free stainless steel 1.4313 · with optional coating Gears Tool steel · nitrated steel · special steel · with optional surface coating · helical gearing · herringbone gearing (for extremely low-pulsation conveyance) Friction Bearings Tool steel · NiAg (nickel-silver) · Al-bronze · special materials · with optional surface coating Shaft Seal Viscoseal · stuffing box · (Vacuum viscoseal) Heating Systems Heat transfer oil · steam Operating Parameters Viscosity up to 40000 Pas Temperature up to 350°C (660°F) Inlet pressure Vacuum up to max. 120 bar (1740 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 (12000 cm3/U - 30000 kg/h).