Siemens Air Damper Actuator SSA161 For pressure independent combi valves (PICV), radiator valves, MiniCombi valves (MCV) and small globe valves Technical Data Sheet SSA151.05HF: Operating voltage AC/DC 24 V, positioning signal DC 4...20 mA SSA161.05HF, SSA161E.05HF: Operating voltage AC/DC 24 V, positioning signal DC 0...10 V Self-calibrating to the valve stroke Direct mounting with coupling nut, no tools required Download PDF Now