Function of Globe Valves
Before understanding the shortcomings of globe valves, we first need to understand their function. A globe valve is a common pipeline control device used to control the flow of fluid in a pipeline. When stopping or controlling the flow of fluid is necessary, this can be achieved by closing the globe valve.
Disadvantages of Globe Valves
1. High Pressure Loss
Globe valves create a certain amount of resistance in the pipeline, causing pressure loss when the valve is closed. Therefore, globe valves with high pressure loss are not suitable for some applications, so you need to be careful when selecting a valve.
2. Long Closing Time
Globe valves take a long time to close, resulting in poor flexibility. When the flow of fluid needs to be stopped or controlled quickly, the closing time of the globe valve may not meet the required requirements, which is also a disadvantage of globe valves.
3. High Maintenance Cost
Globe valves have high maintenance costs and require regular maintenance, otherwise they are prone to failure. This is especially stringent in applications with high temperatures, high pressures, and corrosive media, requiring frequent inspection and replacement.
4. Inability to Adjust Flow
Globe valves can only switch the flow on and off; they cannot adjust the flow rate. When the flow needs to be adjusted, other control devices such as regulating valves are required.
