Amarinth Series III Condensate Recovery Units perform a critical role in the overall condensate recovery system, ensuring that the maximum latent energy is retained by returning hot condensate to the boiler quickly for re-use. They are typically used in industrial buildings such as factories and hospitals.

Series III Condensate Recovery Units are manufactured in 5 tank sizes and incorporate a control panel and Amarinth low NPSH pumps which help reduce the height of the unit saving space and cost.

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CRU Sizing Charts

Amarinth Series III Condensate Recovery Units are designed to handle hot condensate, which is returned for use as boiler feed water. Units are sized based on the head and flow required to get the condensate back to the boiler, along with the operating temperature as this affects the NPSH required by the pump - either 98°C, 94°C or 90°C.

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The images below are provided to help you visualise various Series III CRU product configurations including:

  • General arrangement – simplex pump
  • General arrangement – duplex pump

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General description

Packaged condensate recovery unit incorporating a horizontal receiver with single or twin close coupled motor pumps and control gear.


Galvanised steel receiver with integral control unit and pump

Design methodology

Advanced computer techniques including 3D modelling, FEA & CFD

Design pressure rating

Vented operation

Temperature rating

120°C (standard construction)

Operating temperature

Up to 98°C

Flow rate

Up to 35,000kg/h

Differential head

Up to 35m


Up to 3600 rpm

Control gear

Float operated magnetic level switch linked to control panel


Simplex unit (one pump)
Duplex unit (two pumps)

Design life

20 years (2 years uninterrupted operation)