Deutsch 
English SKD 32.21 electrohydraulic actuator for Siemens straight-through and three-way valves of the VVF.., VVG.., VXF.., and VXG.. series with 20 mm stroke for water-side control of cold, warm, and hot water in heating, ventilation, and air conditioning systems.
Technical data:
Type: SKD 32.21
1000 N, 20 mm stroke, AC 230 V, 3-point control signal, emergency control function 8 sec.
Open/close time: 30/10 sec.
Technical data:
Type: SKD 32.21
1000 N, 20 mm stroke, AC 230 V, 3-point control signal, emergency control function 8 sec.
Open/close time: 30/10 sec.