Ball valve (ball valve), standard gb/t21465-2008 "valve term" is defined as: headstock (ball) driven by the stem, and around the ball valve axis for rotating motion valve. can also be used for fluid regulation and control, including the hard seal V-type ball valve its V-core and surfacing cemented carbide metal seat between the strong shearing force, especially for fiber, micro-solids and other media.
The multi-pass ball valve can not only control the confluence, shunt and flow of the media flexibly, but also can close any channel and connect the other two channels. Ball valve is widely used in petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, Water Conservancy, electricity, municipal, steel and other industries, occupy a pivotal position in the national economy.
It has a rotational 90 degree movement, the plug body is a sphere, there is a circular through hole or passage through its axis.
V-type ball valve can be more accurate flow regulation and control, and tee ball valve is used to allocate media and change the flow of media.
The main advantages of ball valves are:
1, the fluid resistance is small;
2. Fast and convenient switch;
3. Good sealing performance;
4, valve stem sealing reliable;
5, easy to achieve automatic control and long-distance control; 6, the channel smooth, not easy to deposit medium, can carry out the pipeline ball.