Filter press pump
Model FP
The patent-pending solution for filter presses where process stability and result quality matter. Less downtime, more predictability.
For demanding filtration
Shorter cycle times
Stable pressure build-up across the entire filter cycle.
Drier cake
Better dewatering at the end of the cycle — less residual moisture in the filter cake.
Lower energy demand
Hydraulic drive instead of compressed air — energy is transferred directly.
High operational reliability
Dry-run safe and protected with the line closed.
Operational reliability
Our patent-pending filter press pump is developed for demanding filtration — reliable during start-up, with changing solids contents and in continuous operation. The wetted parts made of chemically resistant plastic make it the safe choice for corrosive media and aggressive process conditions.
For maximum robustness, the pump is designed to be dry-run safe and at the same time wear-resistant — ideal for slurries containing solids. The decisive advantage: thanks to the patent-pending design principle, the pump remains protected and takes no damage even with the suction or discharge line closed. In addition, the hermetically sealed design provides the highest level of safety when handling critical media.
Filtration with stable pressure build-up
A filter cycle is not a constant operating point. At the start there is a thin medium and little back pressure, at the end a largely filled plate pack and high pressure. It is precisely this progression that makes filtration one of the most demanding pump tasks of all: the pump has to deliver evenly across the entire cycle although the conditions change continuously.
Model FP is designed for this progression. The hydraulic drive keeps the pressure build-up stable across the cycle instead of dropping off towards the end. This shortens the cycle time — and because the press actually sees the necessary pressure at the end of the cycle, the filter cake comes out drier.
For the downstream process steps this is the real lever: less residual moisture in the cake means less effort in drying, transport and disposal. With continuous plant operation, this effect adds up over every single cycle.
Changing solids contents without special treatment
In practice the slurry is rarely as homogeneous as in the data sheet. Solids contents vary depending on the batch, the upstream process and the raw material quality. Pumps designed for a narrow operating point react sensitively to this — with fluctuating output, increased wear or failures.
Model FP is designed to resist wear and works reliably during start-up, with changing solids contents and in continuous operation. The pump does not have to be readjusted for every batch, and unusual solids contents do not immediately lead to a service call.
Maintenance and downtime
Unplanned downtime at the filter press is expensive because it affects not only the press but the entire process chain behind it. The design decisions on Model FP therefore consistently target availability.
The hermetically sealed design works without a dynamic shaft seal — a classic wearing part that is thereby eliminated both as a maintenance point and as a source of leakage. Dry-run safety and protection with the line closed take two of the most frequent causes of pump damage in filtration operation out of the equation.
Specific maintenance intervals depend on the medium, the solids content and the operating profile. We agree them with you as part of the sizing.
Frequently asked questions
Why does a filter press need a special pump?
Because the operating point changes considerably over the cycle: from thin and pressureless at the start to high back pressure with a largely filled plate pack at the end. A pump that only covers one operating point well loses performance towards the end of the cycle — exactly when the pressure is needed to dewater the cake.
How does Model FP affect the residual moisture in the filter cake?
The stable pressure build-up across the entire cycle ensures that the press sees the necessary pressure at the end of the cycle. The result is a drier cake and therefore less effort in drying, transport and disposal.
What happens when the press closes up and the line is shut?
The pump remains protected and takes no damage — that is the core of the patent-pending design principle and applies to the suction side as well as the discharge side. This very state is the most frequent damage case with conventional pumps in filtration operation.
Does the pump cope with a fluctuating solids content?
Yes. The pump is designed to resist wear and works reliably during start-up, with changing solids contents and in continuous operation — without readjustment for every batch.
Is Model FP suitable for corrosive media?
The wetted parts are made of chemically resistant plastic, which makes them the safe choice for corrosive media and aggressive process conditions. The hermetically sealed design additionally increases safety when handling critical media.
Can Model FP be retrofitted to an existing filter press?
That depends on the existing press, the pipework and the control system. Describe your set-up to us — we will check the integration and come back to you with a concrete assessment.
What technical data is available?
Sizing is done on an application-specific basis. Send us the medium, solids content, flow rate and the required final pressure; you will receive the appropriate technical data sheet from us.
Contact
We are happy to advise you personally — simply send us your enquiry via the form. For reliable sizing it helps us to have details on the medium, solids content, flow rate and pressure requirement.