What is the function of a bolted jacket in valve design?

The function of a bolted jacket in valve design is primarily to apply heat to the valve body. This design feature allows for efficient heat transfer to the valve, which is particularly important in processes where temperature control is critical. The bolted jacket, often fluid-filled, circulates a heating medium such as steam or hot water around the valve body, ensuring that the valve does not become cold and potentially lead to issues such as freezing or solidification of materials being handled. This is crucial in applications involving viscous fluids or where the prevention of crystallization and clogging is necessary.

In addition, the bolted jacket helps maintain the operating temperature of the valve, thereby ensuring proper function and longevity. Keeping a consistent temperature in the valve body is important to prevent thermal stress and to maintain the integrity of the sealing components within the valve assembly. Proper heat application also aids in preventing material build-up and ensures reliable performance in high-temperature applications.