محرك مؤازر Siemens SAS31.50

Siemens SAS31.50 valve actuator — precise control of valves with return spring function. Siemens SAS31.50 is an electric motor actuator for seat valves with an important distinguishing feature: a built-in return spring function. This ensures automatic valve closure upon power failure — a critical property for systems where emergency shutdown requires guaranteed flow shut-off. Application: The SAS31.50 electric motor actuator with a stroke of 5.5 mm and positioning force of 400 N is designed for use with two- and three-way control or shut-off valves in heating and ventilation systems. Key technical specifications: SAS31.50 actuator — electromechanical, for seat valves, force 400 N, stroke 5.5 mm, power supply AC 230 V, control signal 3-point, positioning time 120 seconds, medium temperature range 1…130 °C. The return spring returns to the initial position in 28 seconds. Reliable backlash-free mounting: A special threaded coupling allows easy installation of the actuator onto the valve. The connection design ensures zero clearance between the actuator rod and the valve, guaranteeing precise control even with minimal stem position changes. Ease of operation: SAS actuators feature manual control, a position indicator, and LED status indication. Everything needed for monitoring and manual intervention is right on the device housing. The actuator requires no adjustment and is ready for operation immediately after installation on the valve. The valve position is determined by the increase in positioning force and is stored in the actuator memory during commissioning. If an increase in force is detected in an intermediate position during operation, the actuator opens/closes up to three times.