These types of actuators are used in situations that require valves to automatically and immediately enter a safe position upon loss of power.
Fail safe spring return electric actuator.
Spring return actuators rely on mechanical energy stored by a spring to.
Do rotork electric actuators have fail safe functionality.
Spring return electric actuators are used in critical processes to return quarter turn valves to their safe position even with the absence of power.
Once the power is lost or removed the controlled.
A non intrusive intelligent fail safe quarter turn actuator for on off and modulation control in fail safe applications.
Smart non intrusive electric fail safe quarter turn actuator with mechanical spring return ensures reliable shut down on loss of power or input command.
With no dependency on super capacitor or battery backup this state of the art design is widely.
There are two types of fail safe electric actuators.
Rts fail safe mechanical spring return electric actuator.
Available in 300 600 1200 and 1800 in lb units in both on off and modulating.
The electric spring return actuator uses an electric motor to drive a series of gears to rotate a drive shaft counter clockwise or clockwise depending on the desired fail safe position.
Fail safe spring return electric actuators more simply known as spring return electric actuators are used on linear and rotary valves in a range of applications across nearly all industrial process systems.
Explosion proof class i division 1 groups c d t4 design weatherproof type 4 4x.
Based on the standard running direction that the actuator fails clockwise on loss of power.
When power is supplied the spring mechanism is compressed to store energy for movement.
Our exmax product provides a quarter turn spring return failsafe solution.
Sun yeh s series spring return electric valve actuators and tunnel damper valve actuator utilizes spring driven pinion and rack mechanism to provide torque ranges from 50n m to 260n m mechanical fail safe quarter turn electric actuators.
The actuator can be controlled by external controller to open close and stop at any position between 0 and 90 degree and will fail clockwise to the end position on loss of power.
As the drive shaft rotates a series of springs are compressed or in some styles a spiral spring is tensioned storing energy in the springs.
Spring return electric actuators and battery back up bbu actuators.
Rts fail safe electric actuators with true mechanical spring return for fail safe positioning are designed and field proven for reliable shutdowns on loss of power or signal.
Although they serve the same purpose they mainly differ in their operating principle.
The design has the ability to independently adjust motor speed and fail safe shutdown time.
The robust and compact mechanical spring return design can be triggered to fail safe action either on loss of power or signal.
