Melt pump for the production of HDPE / LDPE / LLDPE. Melt pumps of this type are used in the production and processing of HDPE / LDPE / LLDPE. The EXTRU series is exkat adapted to the requirements in these processes and thus works with highest precision. Special serrations allow an almost pulsation-free conveyance of the melt, which guarantees a constantly high product quality.
Compact and compatible
EXTRU III pumps are of compact design and impress through their extraordinary compatibility. Their light construction and compact design allow simple installation, thus saving time and valuable floor space.
The EXTRU III can be operated with viscosities of up to 30.000 Pas., températures of 350°C, suction pressures of up to 120 bar and diffe-rential pressures of up to 250 bar.
The standard EXTRU III pump is delivered with aluminium-bronze Visco-
seals. This dynamic shaft seal is designed especially for high viscosities and suction pressures and can be provided with cooling if required.
Because of the efficient build-up of pressure in comparison to extruders, the product can be conveyed in a very gentle manner with the WITTE EXTRU III gear pump, as comparatively little energy or heat is transferred to the polymer. They allow an extremely précisé and almost pulsation-free conveyance of polymer, so that fluctuations in conveyance by the extruder will be compensated for. The friction bearings are provided with spécial lubrication pockets and channels to ensure long-term, reliable operation.
Housing: Heat resistant carbon steel
Cover: Carbon steel
Gears: Nitrited tool steel,
optional: coating, herringbone gearing