Can anyone tell me how the actuator part of a mid position 3 way
motrised valve work?
Is it by adjusting the motor torque against a spring till it comes to
rest in a particular position?
I am asking this primarily because I am trying to understand why my
newly replaced valve actuator hums away at 50 Hz (quite loudly). The
valve itself is new also and it is a Danfoss Randall HSV3 and HSA3
I really would ike to understand the working of the valve actuator.
Please point me to any resources on the web - if any. That wil be aan
immense help too. I have searched without too much success.