Overview
The Belimo SY9-110 is a heavy-duty non-fail-safe electric valve actuator designed to deliver high-torque floating and on/off control. It is built to operate large butterfly valves in demanding HVAC and industrial environments.
Features
- Powerful rotary actuation for large valve assemblies
- Integrated dual SPDT auxiliary switches for position indication
- NEMA 4X and IP66/IP67 rated protective enclosure
- Manual hand wheel override for manual operation when needed
- Non-fail-safe design with terminal connections
Specifications
- Nominal Voltage: AC 120 V
- Control Type: On/Off, Floating/3-point
- Auxiliary Switches: 2 x SPDT
- Angle of Rotation: 90°
- Running Time: 62 s
- Degree of Protection: IP66/IP67, NEMA 4X
- Actuator Type: Non fail-safe
Applications
- On/off and floating control of large butterfly valves
- Chiller and cooling tower isolation in commercial buildings
- Industrial water management and central plant HVAC systems



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