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

Belimo NRFA actuator with fail-safe for ball valves (eg. Giacomini R250D with adapter ). The actuator is designed for damper size up to approx. 2m2. 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.

• By using the hand crank the valve can be operated manually and egaged 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.