Why are people using gate valves for flow control?

Despite their limitations, gate valves are still in use for flow control in several applications. While they are not ideal for precise throttling, they offer advantages that make them suitable in certain scenarios. For instance, gate valves can maintain an open or closed state without obstructing flow, which is crucial in systems where a quick shut-off is required, such as in water supply lines from a water meter.
In residential plumbing, gate valves are commonly employed to isolate sections of the piping system. When fully opened, they provide minimal resistance to flow, making them preferable over globe valves and cartridge-type faucets, especially in applications that require a large volume of fluid to be redirected or stopped quickly. However, it's important to note that when using gate valves in higher pressure systems, throttling can lead to cavitation issues due to the rapid change in velocity and pressure.
Research has shown that in non-residential or industrial contexts, gate valves can be selected based on their simplicity and cost-effectiveness. The reality is that many applications show better performance with gate valves when there is a requirement for them to be fully open or fully closed, minimizing wear and extending the lifespan of the components involved. In systems such as aquariums, where the pressure differences are lower, the wear and tear on gate valves is significantly diminished, allowing for usage in a more throttling-like manner without severe damage.
Overall, while the use of gate valves for throttling should be avoided whenever possible due to the drawbacks of increased wear and cavitation risks, their role in flow control remains pivotal in various applications. With proper selection and understanding of the limitations, gate valves can serve as effective components within hydraulic systems.
If you seek more information or a detailed assessment of your specific needs, feel free to explore flow control gate applications with us. Additionally, for a broader context on the use of these systems, you can check out our overview of hydraulic gate solutions. We at IWHR are here to assist with any queries.