Model TP

Transfer tasks sound simple at first: a medium is to go from A to B. In practice, however, it is the medium that determines how long a pump lasts. Slurries with a high solids content attack impellers and seals, corrosive liquids take their toll on the materials, and changing operating states push pumps to limits they were never designed for.

Model TP starts exactly here. The pump works according to the patent-pending hydraulic double diaphragm principle: two diaphragms displace volume alternately, driven by a hydraulic circuit. The medium only touches the wetted parts made of chemically resistant plastic and the diaphragms — the drive remains completely separated.

The decisive difference does not show in normal operation but in the exceptions. An accidentally blocked or closed suction line is a damage case for many pump designs. Not for Model TP: thanks to the patent-pending design principle, the pump remains protected and takes no damage even with the suction line closed.

The same applies to dry running. An emptied feed vessel, starting against a line that is still empty, the end of a batch — all situations in which conventional pumps take damage. Model TP is designed to be dry-run safe and survives these states without intervention.

In practical terms this means: fewer unplanned downtimes, fewer service calls and considerably less dependence on everything running exactly to plan in operation.

With critical media, the question of tightness is not a matter of convenience but a matter of safety. Model TP is of hermetically sealed design. There is no dynamic shaft seal through which medium could reach the outside — and therefore no wearing part that gradually loses precisely this function in operation.

On the media side, chemically resistant plastics provide resilience against corrosive and aggressive process conditions. Combined with the wear-resistant design, this results in a pump designed against both chemical and mechanical attack — the typical dual load with abrasive, aggressive slurries.

Within its optimal performance range, Model TP converts the energy applied into flow with particular efficiency. The electric drive, minimal internal friction losses and a high hydraulic efficiency ensure that hardly any energy is lost.

Especially at small to medium flow rates, the HODD pump leaves many other pump types behind in terms of efficiency. That saves energy, lowers operating costs and makes efficiency the easiest of exercises.