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The difference between fixed and float ball in ball valves

by Adamant Valves

Sanitary ball valves are suitable for frequent operations. They open and close quickly, are lightweight, have a small fluid resistance, a simple structure, a relatively small size, are easy to maintain, have a good sealing performance, are not subject to restrictions of installation directions, have no vibration and low noise.

According to the structures, ball valves can be divided into: float ball valves, fixed ball valves, flexible ball valves and oil sealing ball valve. According to the channel types, they can be divided into: direct energy type, angle type and three-way type. Three-way type can again be divided into T-shaped and L-shaped. According to the connection type, they can be divided into: threaded connection, flange connection and welded connection.

switching ball valve

The float ball valve is a type of ball valve whose sphere doesn’t have a fixed axis. The fixed ball valve is a type of ball valve whose sphere has a fixed axis. The fixed ball valve is a new type of high performance ball valve for long-distance pipelines and general industrial pipelines. In design stage, its safety and resistance to harsh environment have been intentionally considered. It’s suitable for all kinds of corrosive and non-corrosive media.

switching ball valve

Compared with the float ball valve, the force generated by the fluid pressure on the sphere is passed on to upper and lower bearings, so the sphere will not move. The sealing of the valve is achieved by the spring and medium pushing the valve seat, so the valve seat will not bear too much pressure. Therefore, the valve seat of the fixed ball valve keeps its form well and has a light operating torque, a reliable sealing performance and a long service life. It’s particularly suitable for high-pressure, large-caliber occasions.


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