BW Return-Temperature Control Valves (KALORIMAT)

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Reduce installation costs

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Reduce operating costs

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Save energy

Economical utilisation of energy in hot water or thermal-oil heating systems

The BW return-temperature control valves (KALORIMAT) ensures that heating systems run efficiently and are stable. 

By limiting the return-temperature to the desired value, KALORIMAT maintains a constant discharge temperature from the heat exchanger. 

The integral thermostatic regulator accurately senses the temperature of the heating medium and modulates the flow to guarantee uniform distribution of heat and maintain a stable pressure and temperature in the system. 

This ensures optimal performance of your system, saving energy and reducing operating costs.


What are the features?

  • Easy and stable extension of heating systems
  • Prevents overheating or under heating
  • Integral quick acting thermostatic regulator, no external sensor required
  • Directly controlled, pilot flow operated
  • Compact design, standard face-to-face dimensions
Return temperature control valve

Sales brochures (PRO)

Document Language Reference number Download
A - B Product overview English PRO_810815 Download PDF
Mechanical Limiters For the Economical Utilization of Cooling Water and Pressurized Hot Water English PRO_810266 Download PDF
Product range technical information, 2021 English PRO_850128 Download PDF

Data sheets (DBL)


Calorimat Return-Temperature Control Valves BW 31, BW 31A PN 40 / Class 150, DN 15 – 25 PN 25 / Class 150, DN 40



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Installation and maintenance instructions (BAN)


Return-temperature control valve BW 31, BW 31A



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