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Thermodrive TELVA-2

EAN: 8595188181938 | Kód: 8198 (24V) NO
EAN: 8595188181990 | Kód: 8199 (24V) NC
EAN: 8595188181969 | Kód: 8196 (230V) NO
EAN: 8595188181976 | Kód: 8197(230V) NC


  • Thermodrive is intended for opening or closing valves in heating, cooling or air conditioning systems. It is also suitable for use in a floor heating or ceiling cooling manifolds.
  • Available in NO (open without voltage), NC (closed without voltage) and for 230 V and 24 V.
  • The internal principle of operation of thermodrive mechanism = its movement so that the valve opens/closes is provided by an electric heating element with expansion material, which expands due to temperature changes in the supply voltage.
  • Thermodrive is maintenance-free and works completely silently.
  • Thermodrive is fi tted with a metal nut M30 x 1.5, thanks to which it becomes a 100% fixed part of the valve with this corresponding thread size after installation.
  • The stated nut size predetermines the use of a thermocouple with valves from manufacturers such as Herz, HoneyWell, Danfoss, Oventrop and others.
  • Telva thermo drive:
    • is characterized by absolutely quiet and maintenance-free operation
    • is designed for installation - control of heating and cooling systems
    • method of mounting the actuator on the controlled valve using an M30 x 1.5 nut
    • any working position
  • Type of use:
    • Floor heating – the RFTC-50/G wireless controller measures the room temperature and, based on the set program, sends a command to the RFSA-66M switching element to open/close  the TELVA thermodrive on the distributor.

Technical parameters 

  • Supply voltage (frequency): AC 24 V; AC 230 V (50/60 Hz)
  • Design: valve thread 
  • Dimensions: 63 x 42 x 45 mm
  • Protocol: wired


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