hot water pump / oil / electric / centrifugal
ZDI series

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hot water pump / oil / electric / centrifugal hot water pump / oil / electric / centrifugal - ZDI series


  • Media:

    for hot water, oil

  • Operation:


  • Technology:


  • Domain:


  • Other characteristics:

    two-stage, compact, single-stage, with mechanical seals, in-line, transfer, circulation, process, transport, suction, unloading

  • Flow:

    140 m³/h (4,944.0533 ft³/h)

  • Pressure:

    25 bar (362.594 psi)

  • Head:

    60 m (196'10")


Single-stage pumping units in compact design with nominal performances according to EN 733 / DIN 24255, where suction and discharge branch are arranged opposite to each other for direct installation into the pipe work. There is no common shaft for motor and pump. The motors used are standard motors. Due to the process design it is possible to withdraw the whole insert unit without detaching the pump casing from the pipe work.


The volute pumps of the series ZDI are part of the overall programme heat transfer and circutation pumps. They are primarily used for circulation of hot water in closed pipe and vessel systems. Therefore their fields of application are the energy production, the heat transport industry and here mainly in systems where hot water as heat carrier is given preference, despite its high system pressure, over oil as heat carrier.

Technical Data:

Flow rate: up to 140 m³/h

Head: up to 60 m

Speed: max. 3,600 rpm

Temperature: max. 150 °C

Casing pressure: up to 25 bar

Shaft seal: mechanical seal

Material: nodular iron