For this product we offer the service of actuator assembly with armature. More informations

THIS PRODUCT IS REPLACED BY TYPE SFA-S2

Belimo SF actuator with fail-safe for ball valves (eg. Giacomini R250D with adapter). The actuator is designed for damper size up to apporox. 4m2. The actuator control is open/closed..

Functions

In the event of a power failure, the return spring begins to rotate the actuator to the starting position. Eg. closes the damper or ball valve in the event of a power failure. The same can be done upside down, depending only on the initial position of the valve. The actuator is equipped with two auxiliary contacts. One adjustable and one fixed. It is possible to signal an operating angle of 10% - resp. 10-90%. 

• By using the hand crank the valve can be operated manually and engaged with the locking switch at any position

Features

• The actuator is overload protected, no end stops are required.
• Simple mounting on the ball valve with only one screw.
• Adjustable working angle with mechanical stop.
• The actuator can be retrofitted with auxiliary changeover contacts S...A or with a feedback potentiometer.