Fail Safe Electric Valve Actuators

Our exmax product provides a quarter turn spring return failsafe solution.

Fail safe electric valve actuators.

The robust and compact mechanical spring return design can be triggered to fail safe action either on loss of power or signal. Without electrical power the electric actuator cannot move and stays put. Torques up to 2640 in lbs. The actuator is configurable to either fail close or fail open on loss of power supply.

There are 2 basic ways of achieving fail safe functionality. Avc is the industry leader when it comes to fail safe electric actuators for emergency shutdown esd and other fail safe applications. In normal operation a simple electrical supply will do the job. The actuator s output drive shaft make mechanical switches.

Corrosion resistant housing and enclosure type 4 4x 6 ip65. Or the actuator can be set to fail closed where the actuator moves the valve to the closed position commonly referred to as an emergency shut off valve esv. Types of fail safe electric actuators. Spring return electric actuators and battery back up bbu actuators.

Do rotork electric actuators have fail safe functionality. Battery backup fail safe electric actuators for emergency shutdown applications. Electric actuator fail safe the advantage of a failsafe electric actuator over a failsafe pneumatic or hydraulic actuator is that it does not require a supply of pressurized air or oil. When power is supplied the spring mechanism is compressed to store energy for movement.

A fail safe electric actuator has a way of driving the actuator to the desired fail safe position when external power is unavailable. 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 battery recharges automatically when re energized. Our cva cma products and waterproof iqt model through additional battery pack can all provide fail to position functionality.

With no dependency on super capacitor or. 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. These types of actuators are used in situations that require valves to automatically and immediately enter a safe position upon loss of power. 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.

Fail safe electric actuators electrical power supply with emergency shutdown at loss of power or signal. There are two types of fail safe electric actuators. The design has the ability to independently adjust motor speed and fail safe shutdown time.