Goole Valve Technology Co.,Ltd
Address: He_yi Industrial Zone,Oubei Town,Wenzhou City,Zhejiang Province,P.R.China
Tel: 86-577-57781015
E_mail: goole4@goolevalve.com
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Structural principle of ball valve（3）
Structural Principle
Ball valves evolved from plug valves, and their opening and closing parts act as a sphere, rotating 90 degrees around the axis of the valve stem to achieve the purpose of opening and closing. The difference is that the plug body is a sphere, with a circular through-hole or channel passing through its axis. The ratio between the sphere and the channel should be such that when the sphere rotates 90 degrees, it should all appear spherical at the inlet and outlet, thereby cutting off the flow. The function of ball valves on pipelines is mainly to cut off, distribute, and change the direction of medium flow. Ball valves designed with V-shaped openings also have good flow regulation function.
Working Principle
When the ball valve rotates 90 degrees, both the inlet and outlet should present spherical surfaces, thereby closing the valve and cutting off the flow of the medium. When the ball valve rotates 90 degrees, the inlet and outlet should all present ball ports to open the flow, and there is basically no flow resistance.
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