Withstanding all pressures
Maag are the specialists when it comes to working under pressure! Depending on the flow channel geometry of the die head and if there are high Mooney values, low processing temperatures and high filler content, it can be of significant advantage to use a particularly robust gear pump that allows gentle handling of the medium even at extremely high counterpressures.
In this case in particular, it is important to know the quantity of medium required to lubricate the rotating pump parts. To be more specific, the backflow produced in the gear pump as a function of the counterpressure needs to be as little as possible and as much as is needed. This is only achieved through perfectly-selected clearance classes in the pump with the simultaneous selection of suitable material combinations. The extrex RB and extrex UHP models have been optimised especially for these types of application.
Benefits
extrex RB
- Flow channels suitable for flow
- Excellent self-cleaning behaviour
- Low-pulsation transport even at high differential pressure
- Compact design
Application limits
extrex RB
Outlet pressure [bar]: | Up to 450 |
Differential pressure [bar]: | Up to max. 350 |
Pump size: | 56 to 110 |
Specific volume [cm3/rev]: | 59 to 457 |
Throughput range [kg/h]: | |
Viscosity [Pas]: | Up to 30,000 |
Temperature [°C]: | Up to 130 |
extrex UHP
- Flow-optimised inlet and outlet channels
- Adapted bearing load capacity – throughput ratio
- Improved tooth root strength compared to the RB
- Ultra-compact construction also available as a dual pump
extrex UHP
Outlet pressure [bar]: | Up to 700 |
Differential pressure [bar]: | Up to max. 550 |
Pump size: | 60/30 to 120/60 |
Specific volume [cm3/U]: | 44 to 88 |
Throughput range [kg/h]: | 5 to 300 |
Viscosity [Pas]: | Up to 15 000 |
Temperature [°C]: | Up to 90 |
- extrex RV
