A Jacketed Ball Valve is a specialized valve designed with an external jacket that allows for heating or cooling of the valve body. This design ensures that the material passing through the valve remains at a consistent temperature. Jacketed ball valves are particularly useful in industries such as chemicals, pharmaceuticals, and petrochemicals, where the flow of viscous or temperature-sensitive media needs to be maintained.

Typically, Jacketed Ball Valves are constructed from durable materials such as stainless steel, carbon steel, or alloy steel to withstand high temperatures and pressures. The choice of material often depends on the operating conditions and the type of fluid being handled. For the jacket, materials compatible with the heating or cooling fluid are used.

A jacketed ball valve is a type of ball valve that features an additional outer shell or "jacket" around its main body. This jacket creates a cavity through which a heating or cooling medium (like steam, hot oil, hot water, or coolant) can be circulated. The purpose of this jacket is to maintain the temperature of the process fluid flowing through the valve, preventing it from solidifying, crystallizing, or becoming too viscous, or conversely, to keep it cool.