Comparison of Flow Regulation Capabilities —— Differences in Opening Control Precision between J-VALVES Gate Valves And Globe Valves

In modern industrial production and various fluid transmission systems, valves play a crucial role in the precise regulation of flow. As commonly used fluid control equipment, the gate valves and globe valves of the J-VALVES brand exhibit different flow regulation capabilities in terms of opening control precision. The following will conduct an in-depth analysis of the differences between the two from a technical perspective.

1. DIFFERENCES IN STRUCTURAL PRINCIPLES

· J-VALVES Gate Valves:Their structure mainly consists of the valve body, gate plate, valve stem, and driving device, etc. The gate plate moves vertically up and down along the passage of the valve body to control the flow. When the gate plate is fully raised, the flow channel is almost completely opened, providing the maximum flow area; when the gate plate descends, it will reduce the flow channel area and thus limit the flow. In principle, the change in the relative position between the gate plate and the passage of the valve body determines the flow volume.

· J-VALVES Globe Valves: The main components include the valve body, valve core, valve seat, valve stem, and corresponding driving mechanisms. The valve core makes a linear displacement up and down within the valve seat to regulate the flow. It closely fits with the valve seat and controls the effective cross-sectional area through which the fluid passes by changing the gap between the two, thus realizing the regulation of the flow.

2. INFLUENCE OF DRIVING DEVICES AND CONTROL

· J-VALVES Gate Valves: Their driving devices usually need to provide a relatively large torque to drive the lifting and lowering of the gate plate, especially more obvious in large-diameter gate valves. When driven electrically or pneumatically, although relatively stable movement of the gate plate can be achieved, it is difficult to achieve extremely high precision in the fine control of the opening due to factors such as the structural inertia of the gate plate itself and the friction with the valve body.

· J-VALVES Globe Valves: The driving device acts on the valve stem to drive the movement of the valve core. Since the valve core is relatively light and its movement stroke is relatively short, combined with a high-precision driving system (such as a precision electric actuator), the displacement of the valve core can be controlled more precisely, thus having a better performance in the opening control precision. However, in some cases where large-diameter globe valves require a relatively large torque for driving, it may also have a certain impact on the precision, but overall it is still better than the precision of gate valves in small flow regulation.

3. RECOMMENDATIONS FOR APPLICATION SCENARIOS
Based on the above comparison of the flow regulation capabilities in terms of the opening control precision between J-VALVES gate valves and globe valves, the following suggestions can be referred to in actual application scenarios:

· If it involves large-flow transmission, the requirement for flow regulation precision is not high, and more attention is paid to the fluid passing ability and lower fluid resistance, such as in municipal drainage and large industrial water transmission pipelines, the gate valve is a more appropriate choice.

· For those fields that require precise control of tiny flows, such as pharmaceuticals, fine chemicals, scientific research experiments, etc., where the requirements for flow precision are strict, the globe valve should be given priority to ensure the accuracy of flow regulation and guarantee the smooth progress of production or experiments.

In conclusion, a deep understanding of the differences in the flow regulation capabilities of J-VALVES gate valves and globe valves in terms of opening control precision can help engineers and users make more scientific and reasonable valve selection decisions according to specific working conditions, ensuring the efficient and stable operation of fluid transmission systems.