Compared to other types of valves, ball valves have angular stroke output torque, quick and smooth opening, wide applicability, and the following advantages:
Reduced Friction Torque: The thrust bearing reduces the friction torque on the valve stem, allowing for long-term smooth and flexible operation.
Antistatic Function: Springs are placed between the ball, valve stem, and valve body to discharge static electricity generated during the switching process.
Long Service Life: Materials such as PTFE have good self-lubricating properties, resulting in minimal friction loss against the ball, contributing to the long service life of ball valves.
Low Fluid Resistance: Ball valves have the lowest fluid resistance among all valve categories, even in reduced bore configurations, where fluid resistance remains quite low.
Reliable Stem Seal: Since the valve stem only undergoes rotational motion without vertical movement, the stem's packing seal is less prone to damage, and its sealing ability increases with higher medium pressure.
Excellent Seat Sealing Performance: Sealing rings made from elastic materials like PTFE are used, offering easy sealing and improved sealing capacity as medium pressure increases.
Low Fluid Resistance: Full-bore ball valves exhibit minimal flow resistance.
Simple Structure, Small Size, Light Weight: The structure is simple and compact, resulting in a small size and lightweight design.
Tight and Reliable Sealing: With two sealing surfaces, ball valves utilize various plastic materials for sealing, achieving complete sealing. They are extensively used in vacuum systems.
Convenient Operation: Ball valves are easy to operate, with a 90° rotation from fully open to fully closed, allowing for remote control.
Easy Maintenance: The simple structure of ball valves, along with movable sealing rings, makes disassembly and replacement convenient.
Isolation of Sealing Surfaces: During full open or full close positions, the sealing surfaces of the ball and seat are isolated from the medium flow, preventing erosion of the valve sealing surfaces.
Wide Applicability: Ball valves can be applied in a wide range of sizes, from a few millimeters to several meters, from high vacuum to high pressure.
Suitable for Suspended Solids: Due to their wiping action during opening and closing, ball valves can be used with media containing suspended solid particles.
High Machining Precision, Expensive: Ball valves are highly precise in their construction, which can increase their cost. They are not recommended for high-temperature applications, and if there are impurities in the pipeline, there is a risk of blockage that prevents valve opening.