The electrothermal actuator STP161.65 from Siemens is designed for precise control of radiator, small, and zone valves, as well as PICV. This model is maintenance-free and engineered for long-term and quiet operation, making it ideal for technical applications where reliability and minimal maintenance are crucial. The actuator is equipped with stroke detection, which allows for automatic calibration for optimal performance, ensuring reliable operation without the need for constant maintenance.

Application

• Control of terminal units on the water side, heating, and cooling zones
• Combination with Siemens radiator valves (VDN, VEN, VPD, VPE....)
• Can also be combined with radiator valves from other manufacturers (Heimeier, Cazzaniga, Oventrop M30 x 1.5, Honeywell-Braukmann, and MNG - without the need for an adapter)
• Stroke detection: Ensures precise valve adjustment and prevents dry running

Features

• Power supply 24 VAC
• Setting time 270 s
• Control 0...10V
• Connection cable 1m
• Stroke 6.5 mm
• Valve open without voltage