When it comes to ball valves, the first reaction of many people is their distinctive 90° rotation, which enables them to quickly cut off or reconnect the fluid. This feature makes them particularly suitable for use in situations requiring emergency shut-off, with a response time as short as within one second.
But its capabilities go far beyond this. It has two core functions.
First, there is flow regulation. If you need to precisely control the flow, the V-type ball valve is the right choice for you. Its adjustable ratio can reach 300:1. Additionally, it is particularly suitable for controlling media containing fibers or particles.
The next aspect is the flow direction change. The design of the multi-port ball valve enables it to flexibly alter the flow direction of the medium. Whether it is achieving a combined flow, a split flow, or a channel switch, it can handle all of these scenarios with ease.
Therefore, the application scenarios of ball valves are also quite extensive.
In the industrial field, it is often used in oil, chemical and natural gas pipelines, responsible for controlling high-pressure or high-temperature media.
In the water treatment system, it also plays an important role. For instance, in branch pipes with a diameter of DN200 or smaller, it can not only achieve regional isolation but also perform flow control.
In the field of automation control, electric ball valves are used to achieve remote and precise regulation, and they are very common in HVAC systems.
The reason why it can handle so many roles lies in several key performance advantages.
Firstly, there is low flow resistance. The ball valve adopts a full bore design, which results in a flow resistance coefficient ζ ≤ 0.5, leading to significant energy-saving benefits.
The next feature is high sealing performance. It has two sealing methods. One is soft sealing (PTFE), which can achieve zero leakage; the other is hard sealing (metal), which can withstand temperatures up to 650℃.
Finally, there is the aspect of long service life. The hard-sealed ball valve can undergo up to 500,000 cycles of operation.
Of course, when making the selection, it is also necessary to make the decision based on specific circumstances.
If the medium itself is corrosive, a ball valve made of 316L stainless steel or fluorine-lined material should be selected.
If the medium contains particles, then it is more appropriate to consider using a V-type ball valve or a hard-sealing structure.
Furthermore, for high-pressure systems (with a pressure rating of ≥ PN10), a fixed ball valve must be used.