The HERZ 7708 motor valve drive is an electromotive 3-point actuator for control valves in heating and cooling systems. It is designed for energy-efficient control of water-bearing valves in building services, and pairs with HERZ M28 x 1.5 valves including the 4006 SMART PICV used in HerzCON 4600 DN15–DN20 valve stations.
The drive delivers 200 N actuating force over a maximum 8.5 mm stroke and mounts with the red M28 x 1.5 adapter supplied in the box. An LED shows operating status, and a manual stroke setting allows the valve to be opened for commissioning, flushing or maintenance without power.
Two versions are available. The 24 V AC/DC model (1-7708-40) has a plug-in connection cable and suits 24 V room thermostats and controllers. The 230 V AC model (1-7708-41) is normally closed with a fixed connection cable, for 230 V thermostats or a building management system. For 0–10 V modulating control, see the HERZ 7708 modulating drive (1-7708-42).
FlowQuip supplies HERZ products in New Zealand. For project pricing, actuator selection or help matching drives to valves, contact our team.
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