What Is Pressure Relief Valve?

  A Pressure Relief Valve (PRV) is a safety valve used to control the pressure in a system or device. Its main function is to automatically release the pressure when the internal pressure of the system exceeds the set value to prevent the system from being damaged or causing an accident due to excessive pressure.

Main features and functions:

Safety protection: PRV is mainly used as a safety device to ensure that the pressure of the system or equipment is within the normal operating range. Once the pressure exceeds the set value, the valve will open and release part of the fluid or gas to reduce the pressure and protect the equipment from damage.

Automatic operation: PRV usually works automatically, that is, it will automatically open and release the pressure when the preset pressure is reached without external intervention.

Flexible design: It can be designed and adjusted according to the needs of specific applications to adapt to different pressure requirements and fluid properties. PRV can be used in liquid, gas and even steam systems.

Various applications: It is widely used in many fields such as industrial equipment, processing plants, water supply systems, boilers, oil and gas pipelines, etc.

Regular inspection and maintenance: To ensure its normal operation and system safety, PRV usually requires regular inspection, calibration and maintenance.

Working principle:

The basic working principle of PRV is to use a preset spring force or other adjustment mechanism. When the internal pressure of the system reaches the set value, the valve opens and releases a portion of the fluid or gas to reduce the system pressure until the pressure drops to a safe range.

Summary:

Pressure relief valves are a key component to ensure the safe operation of industrial and commercial equipment. They protect the system from damage and accidents by automatically releasing excessive pressure. Its design and selection need to take into account factors such as the system's pressure range, media type and flow rate to ensure that it can work reliably when needed.