ARE THE ELECTRIC ACTUATORS AVAILABLE IN DIFFERENT VOLTAGES?
Are electric actuators available normally closed? Electric actuators are power to open, power to close. They do not have a normal position. What does “Duty Cycle” mean and why is it important? Duty cycle is a rating that is given on all electric actuators. It is a relationship between actual running time and necessary rest. A unit which has a 100% (continuous) duty cycle would be able to run in ideal conditions indefinately at ambient temperature. However, a unit which has a 25% duty cycle would require 3 times the amount of rest time as actual running time. This is important when using an electric actuator for modulating service. When a unit is in modulating service, it is coninuously making corrections to the valve position as the process demands. In this case it would be important to have a unit with a 100% duty cycle. A unit that is in open/close service and would remain in either open or closed position for extended periods of time would not require the 100% duty cycle as the valv
