for radiator valves, small valves and Combi valves
Electrothermal actuators, stem extended in a deenergized state (NC) for 2-position and quasi-proportional control of heating systems, chilled ceilings and terminal units. With position indication.
Suited for valves:
Additional info
For fitting to valve: Cap nut M30 x 1.5
SIEMENS
Siemens STP121.65L10, S55174-A203 for small valvesElectrothermal actuators, stem retracted in a deenergized state (NO) for 2-position and quasi-proportional control of heating systems, chilled...
SIEMENS
Siemens STA161.65L10, S55174-A214 for radiator valves, small valves and Combi valvesElectrothermal actuators, stem extended in a deenergized state (NC) for 2-position and quasi-proportional control...
SIEMENS
Siemens STP321.65L10, S55174-A202 for small valvesElectrothermal actuators, stem retracted in a deenergized state (NO) for 2-position and quasi-proportional control of heating systems, chilled...
SIEMENS
Siemens STA121.40L10, S55174-A219 for radiator valves and floor heatingElectrothermal actuators, stem extended in a deenergized state (NC) for 2-position and quasi-proportional control of heating...
SIEMENS
Siemens STA161.40L10, S55174-A222 for radiator valves and floor heatingElectrothermal actuators, stem extended in a deenergized state (NC) for 2-position and quasi-proportional control of heating...
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