Why does a servo-controlled valve require a minimum differential pressure?

Not every solenoid valve operates independently of the pressure difference between the inlet and outlet.

In traditional servo-controlled valves, the pressure difference in the medium is used to open or close the main valve.

If the differential pressure is too low, the valve may not be able to open fully.

The solution?

Depending on the application, different valve types may be suitable:

- Direct-acting valves

- Forced-acting valves

- Servo-controlled valves

These differ, amongst other things, in whether and how much minimum differential pressure is required for them to function.

That is why, when selecting a valve, not only the maximum operating pressure but also the minimum differential pressure should be taken into account.

If you want to learn more and find the most suitable solution for your processes, contact CSC-Automation!