Well it's -4F today and I have some frozen valves, imagine that. Our typical valve is a steel ball valve with an air actuator, solenoid, and limit switches. Sizes range from 1/2" to 6" with 2" being very common. These are full open / full closed valves, not control valves.
The problem is not the fluid in the pipe or the valve itself. We use electric heat tracing as needed on the pipe lines and valves. The problem is in the air actuator or solenoid. Any tips or tricks to keeping these from freezing? The utilities guys claim the compressed air is dry.
Is anyone using an electrically driven valve for applications like this? Can you recommend a brand and model?
The problem is not the fluid in the pipe or the valve itself. We use electric heat tracing as needed on the pipe lines and valves. The problem is in the air actuator or solenoid. Any tips or tricks to keeping these from freezing? The utilities guys claim the compressed air is dry.
Is anyone using an electrically driven valve for applications like this? Can you recommend a brand and model?