• Automatic actuation of each of the valves
  • Individually control indoor temperatures
  • Suitable replacement for the 22c/2.5w Actuator

Watts Electrothermic Actuators, series 22CX, are ON/OFF devices used for automatic actuation of each of the valves. When mounting the actuator on the valve body, the valve plug shuts off the flow of fluid (normally closed version / NC). When voltage is applied, a linear movement of the thermostatic element causes the valve plug to open, which then allows the fluid to flow. When the voltage is removed, the valve plug is closed again.


  1. Display window
  2. Thermostatic element
  3. Close Spring
  4. Electronic contact
  5. Connection Wire
  6. Valve connection (threaded ring nut / M30x1.5)

Suitable replacement for the 22c/2.5w Actuator


Action ON/OFF

Power supply: 230 VAC/DC (+10% / -15%)
Frequency: 50 ÷ 60 Hz
Power consumption: 1.8 W (normal operation)
Peak starting current: 0.20 A x 0.5 sec (230V)

Initial opening  time (power ON); 230V / 75 s
Final opening time (power ON); 3 min

Actuator stroke: Max 3.5 mm
Valve stroke: 2.5 mm
Protection class: IP44 to EN60529

Electrical Protection: class II
Safety (contamination level) 2
Cable length * 1 m
2-pole x 0.75 mm2

Operation temperature limit: 0°C to 50°C
Storage temperature limit: -25°C to 60°C
Fluid temperature limit: Max 110 °C

Nominal closing force (power OFF) (Closed type) 100 N (±10%)
Cover Ral 9016 Polyamide +30 F.V.
Self Estinguished
Valve connection Threaded ring nut M30x1.5

Weight: 150g


Watts Industries


Watts Industries are the leading innovators and manufacturers of thermostatic control systems for Underfloor Heating systems throughout the world. Watts thermostatic control systems have been developed to be easy to use and long lasting. Watts supply many leading companies throughout the world with thermostats including Floor Heating-Direct and Magnum Heating.

Watts Industries manufacture an extensive range of products dedicated to the comfort and safety in the area of water and heating, for domestic, commercial and industrial applications. Shop our range of Watts thermostats today. If you have any questions then get in touch and one of our specialist engineers will be on hand to answer any questions.


Buying Watts Thermostats and Control Units

  • Quick and easy ordering process, via website or telephone
  • Highest European approvals and certifications on all products ensuring quality & reliability
  • UK based technical support service, along with a full CAD design service ensures your total support along the whole design/purchase/installation process
  • Fast free delivery anywhere in the UK mainland
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