In the common ball valve demonstration animations found online, there are often scenes showing fluid entering the interior of the valve – does this refer to floating ball valves?
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1. In the common ball valve demonstration animations found online, there are often scenes showing fluid entering the interior of the valve – does this refer to floating ball valves? 2. If it is a fixed ball valve, won’t the medium enter the interior cavity of the valve? After all, there are seals between the valve seats at both ends and the valve body. In that case, these seals must be very important; if they fail, the medium will be able to pass through without going along the sealing surfaces between the valve seats and the ball, thus creating a path from one side to the other within the cavity. But why isn’t any information regarding these seals included in the design documents? 3. If 2 is correct, when the fixed ball valve is closed, some medium remains inside the ball valve. At this point, the ball valve is at a 90-degree angle to the valve body. To prevent this medium from leaking out, it is necessary for there to be a sealing effect between the ball valve and the interior cavity of the valve body Is it possible with a ball valve?
1. The medium entering the valve chamber in the ball valve demonstration animation does not necessarily indicate a floating ball valve. Ball valves are divided into floating ball valves and fixed ball valves, and in both types, it is possible for the medium to enter the interior cavity. 2. Fixed ball valves typically have good sealing between the valve seats at both ends and the valve body, to prevent leakage of the medium. If this seal fails, the medium can indeed leak directly through the inner cavity, bypassing the sealing surfaces of the valve seat and valve ball. The design documents may not provide detailed information on the sealing parts, but in practical use, these seals are extremely important and are subject to regular inspection and maintenance. 3. When the fixed ball valve is closed, some of the medium may remain inside the valve ball. Ensuring that this portion of the medium does not overflow usually requires a good seal between the valve ball and the valve body. Some ball valve designs can achieve this, for example by using additional sealing elements to ensure that no fluid leaks even when the valve is closed. .