GIRA Θερμοηλεκτρικός επενεργητής 24 V 217900

The GIRA 217900 thermoelectric actuator is a compact, normally closed valve drive for 24 V AC/DC systems, delivering reliable on/off control for heating and cooling circuits. Its M30 x 1.5 connection and 100 N closing force make it a direct fit for most radiator and manifold valves, while the 1 m connection cable simplifies installation in tight spaces.

Highlights

• 24 V AC/DC operating voltage, 1 W power consumption
• Normally closed (NC) function for fail-safe operation
• M30 x 1.5 thread, 4 mm stroke, 100 N closing force
• IP54 protection for use in damp environments
• 1 m connection cable included

In daily use

The actuator opens and closes within 3–5 minutes, providing smooth, quiet regulation without water hammer. It mounts in any position and withstands medium temperatures up to 100 °C, making it suitable for both radiator and underfloor heating applications. The white/grey plastic housing blends discreetly into most installations.

Full specifications

• Operating voltage: 24 V AC/DC
• Power consumption: 1 W
• Function: Normally closed (NC)
• Protection class: IP54
• Connection thread: M30 x 1.5
• Stroke: 4 mm
• Closing force: 100 N
• Cable length: 1 m
• Control type: 2-point (on/off)
• Ambient temperature: 0 to +60 °C
• Storage temperature: -25 to +60 °C
• Max. medium temperature: 100 °C
• Opening/closing time: approx. 3–5 min
• Mounting position: any
• Housing material: plastic
• Colour: white/grey
• Certification: CE

Final note

This actuator is engineered for dependable zone control in 24 V heating systems, offering a straightforward retrofit solution with proven GIRA quality.