Difference between pressure relief valves and control valves
Thread Content
I understand that pressure relief valves and control valves operate on similar principles, but pressure relief valves are used to stabilize the pressure downstream of the valve, while reducing the opening degree of a control valve increases the pressure upstream of it. Could someone explain in detail the principles behind each and their differences?
A control valve is a component of an automatic control system; therefore, only the valves that serve as control elements in such systems can be called control valves.
You can understand that control valves cannot be used on their own outside of a control system (with the exception of self-acting control valves), while pressure relief valves can be used independently
The pressure relief valve can be used alone. Control valves generally cannot be used alone
So, can the control valve have its opening degree adjusted before it is turned on, that is, before it is used properly?
So, can the control valve have its opening degree adjusted before it is turned on, that is, before it is used properly?
As long as it is powered on and connected to the signal, it can be adjusted through the control system
The pressure relief valve can be adjusted independently, while the control valve requires an actuator to provide power from the outside.