3 Factors to Consider When Selecting Pressure Relief Valves for Plant Operations

When installing plant piping systems, it is essential for contractors to use parts and components that keep plant operations moving smoothly, efficiently and safely. Pressure relief valves are one such component, and the primary function is to protect piping systems from fatal overpressure situations. However, different applications require varying types of pressure relief valves; therefore, making the right selection is critical. This article provides a guide for choosing a pressure relief valve that meets the specific needs of the piping system. 

Valve Materials 

One crucial thing you must understand when sourcing for pressure relief valves is that the components are made from different materials. Most importantly, you want a valve material that matches your project. For instance, the main media that flow through plant piping systems are gas and liquids, and these can affect the proper functioning of a valve if it is made of the wrong material. Notably, if you want a pressure valve to control the flow of corrosive media such as acid, then choose valves that are made of steel. On the other hand, if the piping system primarily handles gases, then a plastic or rubber pressure relief valve is adequate. Ultimately, choose a valve material whose performance is not adversely affected by the media. 

Set Pressure

Although all pressure relief valves are designed to withstand pressure, and they are not one-size-fits-all. Different valves have various limits, and putting this into consideration is essential. When choosing pressure relief valves, first confirm what the maximum set pressure limit is. It will guide you to install the right valve in optimal pressure conditions. A general rule in pressure valve selection is that the valve's set pressure should not pass the maximum allowable working pressure. It ensures that every valve you install can withstand the system's maximum pressure at any given time. Most manufacturers code the maximum allowable pressure on the relief valves' surface.

System Temperature 

The media flowing through a plant piping system vary in temperature. For example, the piping system in a geothermal plant primarily transports steam and boiling water. The pressure relief valves for such an application must, therefore, handle the high temperatures of the entire system or pose a danger to workers and the surrounding community. Notably, rubber and nylon pressure release valves are best used in systems where the media has low temperatures. For high-temperature applications, make sure that you choose steel pressure relief valves.

Contact a company that sells products like Bailey valves for more information.