Basic Overview About Pressure Relief Valves
Pressure Relief Valves are used to limit the amount of pressure, or in some cases to regulate, to be built up in a system over time (tank, water pump, etc.) It can lead to a process upset, equipment failure, or even a fire when this pressure goes uncontrolled. Such pieces of equipment typically work by allowing an additional passage from the tank or pump to stream out of the pressurized fluid or gasses. Once a certain amount of pressure has been accumulated, these safety relief valves can be set to open. The device is secured in this way.
The bypass Pressure Relief Valves are sometimes used in a system that can also help relieve pressure by adding some or all of the fluid that a pump or compressor removes to the inlet or storage reservoir of the pump It effectively prevents the compressor or pump from feeling too much pressure, as well as any other related equipment. The bypass equipment can be installed inside the system, constructed directly inside the pump, or as an external unit, typically installed as part of the fluid path. These are frequently found in fire trucks to prevent overpressure of the hoses.
High pressure is certainly not the only reason for the need for Pressure Relief Valves. Too little pressure can produce a vacuum that is less than your device can bear. Thus valves are sometimes used when the pressure is too low.
Home-water valves, industrial pipes, chemical pressurizing systems and much more are also available. Always select the Pressure Relief Valves for your purpose and when you are unsure, consult an expert to avoid all possible harm.
