Structural principle of floating ball valve
Thread Content
Dear experts, I would like to ask whether the floating ball in a floating ball valve is the ball that operates the valve by being connected to the valve stem. There are explanations in the forums, but they aren’t very clear. The difference between this type of valve and a track ball valve lies in the way the ball makes contact with the valve seat. Could there be a more detailed explanation or some actual images to help illustrate this?
A floating ball valve is a common type of valve, and its structural principle is as follows: A floating ball valve is mainly composed of a ball, a valve seat, a valve stem, and sealing elements. The sphere is usually spherical and can float freely inside the valve. The valve seat is fixed to the valve and is used to support the ball and provide sealing. The valve stem connects the ball and the operating mechanism, and switching control is achieved by rotating the valve handwheel or using an electric motor. When the valve is closed, the sphere is subjected to pressure, causing it to move toward the valve seat and create a seal. When the valve is opened, the ball moves away from the seat and remains inside the pipe, creating a passage that allows the fluid to flow through the valve. Unlike track ball valves, the ball in a floating ball valve is floating; it is not directly connected to the valve stem but is supported by the valve seat. As a result, the ball can float freely under the influence of the medium, thereby achieving a better sealing effect. I hope this can answer your questions. .
Refer to Floating Ball Valve: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1329997&shareuid=301199 Floating Ball Valve: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=165882&shareuid=301199
In the sealed version of the 23072308 floating ball valve, under the action of the medium, the ball is pressed against the sealing ring on the outlet side; in other words, this ball can move back and forth, thereby achieving single-sided sealing； The sealing of a ball valve in a track design relies on the guide grooves on the valve stem, which move the ball toward the seal ring to achieve sealing.