- Size of handwheel is designed for safe and efficient emergency manual operation. - When operated the manual override lever engages the handwheel. Manual override is automatically disengaged when motor power is applied. - Base mounting is standard to ISO 5211. Drive bush is removable for machining to valve stem requirement. The actuator position on the valve can be selected for 4 positions by means of 4 bolt holes in the drive bush. - A space heater inside the actuator prevents condensation due to temperature and weather changes. Standard 200W heater keeps all electrical components in the actuator clean and dry. - The limit switch is activated by means of a simple and yet reliable cam mechanism mounted and driven by the center column. The valve position can be accurately and easily set with a simple adjustable switch mechanism. The set position is permanent and is not affected by over- travel resulting from manual operation. - Cam activated torque switches are easily adjustable to provide over-load protection. - Rolled steel wormgear on aluminium bronze wormwheel self-locks to prevent valve back drive on control signal or power failure and transfers high torque with high efficiency at low sound levels.
Trustpilot
2 weeks ago
2 weeks ago
