Fit and Test a Pressure Relief Valve

Pressure relief valves have the task of controlling and regulating the pressure in a hydraulic system and in parts of the system

The input pressure (p) acts on the surface of the sealing element and generates a force.

The relief valve must always be fitted in the pressure line between the pump and the last control valve

The pilot valve is held closed by a spring. The tension of the spring can’t be altered by means of the adjusting screw

The pilot valve on a Pilot operated pressure relive valve is held closed by a spring. The tension of the spring can be altered by means of the adjusting screw

Pressure relief valves are designed in the form of poppet or _______ valves

_________ open the connection to other consuming devices when the set pressure is exceeded

If a spring-loaded relief valve is used in a system which has a large _________, the taper seat will vibrate

It often happens that in certain applications, _________ pressure relief valves with different pressure settings are required in a circuit.

A pressure relief valve is termed a _______ when it is attached to the pump, for example, to protect it from overload.