Ball Valve Operating Principle
A ball valve is like a rotary switch on a water pipe, its core being a perforated metal ball. When the handle is turned 90 degrees, the ball's orifice aligns with the pipe (fully open) or is perpendicular to it (fully closed). This design makes the switching action as crisp as a light switch-a half-turn completes the transition from fully open to fully closed, with a response speed three times faster than ordinary valves.
The Ingenious Design of the Sealing System
The sealing performance of a ball valve depends on three key fits:
Ball Polishing: Surface roughness less than 0.8 micrometers, equivalent to 1/100th the thickness of a mobile phone screen.
Resilient Seat: Made of special composite material, maintaining a tight fit even under 5MPa pressure.
Pre-tightening Structure: Applying appropriate pre-pressure to the seal during installation ensures leak-free long-term use.
Applicable Scenarios and Selection Considerations
Ball valves are not suitable for all situations. They excel at handling clean fluids such as water, oil, and gas, but are prone to wear when encountering media with many particles. When purchasing, note:
For low-pressure pipelines, plastic ball valves are more economical.
High-temperature environments require a hard metal seal.
For applications requiring frequent adjustments, it is recommended to install a positioner.
