The main difference between the double jacket gate valve and the ordinary gate valve lies in its special double jacket structure. This structure allows the double jacket gate valve to operate over a broader temperature range and provides more precise control over the fluid temperature. Here are some key distinctions:

Double jacket structure

Double Jacket Gate Valve: Features a dual-layer jacket structure. The inner jacket is used to control the flow of fluids, while the outer jacket is employed to maintain the temperature around the valve, allowing temperature adjustment through the introduction of a thermal carrier or cooling medium.

Ordinary Gate Valve: Lacks a double jacket structure and typically consists of basic components such as the valve body, valve cover, valve stem, and gate. Primarily used for fluid cutoff.

Temperature control

Double Jacket Gate Valve: Possesses precise control capabilities over the temperature in the vicinity of the valve, suitable for high-temperature or low-temperature environments.

Ordinary Gate Valve: Has relatively weaker temperature control capabilities and is typically not suitable for extreme temperature conditions.

Application scenarios

Double Jacket Gate Valve: Primarily employed in specialized industrial sectors that require temperature control of fluids, such as in the chemical, petroleum, and natural gas industries.

Ordinary Gate Valve: Suitable for general fluid control scenarios in typical industrial applications where precise temperature control is not required.

Antifreeze and insulation

Double Jacket Gate Valve: The design of the outer jacket makes it suitable for preventing the freezing of the valve structure, ensuring normal operation in cold environments.

Ordinary Gate Valve: In cold environments, additional measures may be needed to prevent structure freezing.

Complexity and cost

Double Jacket Gate Valve: Due to its complex structure and temperature control features, it is generally relatively intricate, and costs may be higher.

Ordinary Gate Valve: With a comparatively simple structure, it typically incurs lower costs.

Overall, double jacket gate valves play a crucial role in specialized industrial applications that require temperature control of fluids, while ordinary gate valves are more suitable for general fluid control scenarios. Choosing the appropriate valve type depends on specific process requirements and environmental conditions.