Any type of manufacturing or production process that includes the use of acids creates a problem for system designers and engineers. Acids are difficult to work with at any time, and it is imperative to ensure that all elements used in any systems will not corrode or degrade due to the exposure to the acid.
The choice of acid resistant valves, which may also be marketed as corrosion-resistant valves, needs to be selected carefully for these types of systems. Even with a relatively weak acidic or corrosive media, the constant exposure of the interior of a standard valve quickly leads to valve failure. In some cases, the valve may simply fail to seal or function properly, which can also create problems in system performance and safety while being more difficult to detect.
The Right Valve for the Job
Selecting the correct type and configurations in acid resistant valves is always the first step. Even with top quality products, installing valves that are not correctly sized or that do not offer the control required in the system results in operational problems.
Sizing the valve includes calculating the volume of flow, the type of media, the viscosity issues with the media as well as the pressure through the system. Other factors, such as media temperature and system-specific configurations, make some valve types a better option than others.
One of the most effective options in acid resistant valves is offered through the application of a PTFE valve. PTFE or polytetrafluoroethylene is also known as Teflon, and it provides a surface to the interior of the valve that prevents the media from attaching or sticking on the surface while also providing resistance to acids and other types of corrosive materials.
Take the time to research the manufacturer. Look for companies with a top reputation in providing quality valves that can stand up to the most demanding applications.