Chemicals are indispensable and integral part of modern life, touching almost all spheres of human activity. Chemicals play an important role in our diet. Preservatives, flavor enhancers, and flavorings help foods taste palatable and increase their shelf life. The food industry thrives because preservatives not only help keep them the quality of food but also help them to import food to different parts of the world. Due to these advancements, we can enjoy fruits, canned food products, and ready-to-eat food products worldwide.

A control valve is used as a final control element in a closed-loop system to automate specific processes which involve the transportation of fluids from one place to another. It is a device used to control the flow of fluid by varying the size of the flow passages. The size of the flow passages is dictated by a signal which cannot be pneumatic, hydraulic or electric. The flow of a moving fluid is controlled directly by a control valve, with the help of which process quantities such as liquid level, temperature and pressure can be controlled indirectly. They can be seen as consequences of the regulatory action on the flow rate of the fluid. The signaling instructions are provided by a controller present in the closed regulation loop.

Chemical ball valves can be used in low flow situations. They can work well with gases and vapors. For ball valves, there can be single body, split body, three piece body, welded and top inlet. They are known to form a good seal and are also reliable for longevity. Ball valves can open and close quickly. Chemical resistant ball valves have a crucial role in the chemical industry and the other valves.