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Difference between revisions of "Ball Valves"
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[[File:Ball Valves.jpg|thumb|right|Ball Valves]] | |||
[[File:Ball valve2.jpg|thumb|right|Ball Valves]] | |||
'''Ball Valve''' is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you see the valve's position. The ball valve, along with the butterfly valve and plug valve, are part of the family of quarter turn valves. | '''Ball Valve''' is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle or lever will be inline with the port position letting you see the valve's position. The ball valve, along with the butterfly valve and plug valve, are part of the family of quarter turn valves. | ||
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A ball-check valve is a type of check valve with a ball without a hole for a disc, and is not covered in this article. | A ball-check valve is a type of check valve with a ball without a hole for a disc, and is not covered in this article. | ||
==Types of ball valve== | ==Types of ball valve== | ||
There are five general body styles of ball valves: single body, three piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve especially the casing that contains the ball itself—are manufactured and assembled. The valve operation is the same in each case. | There are five general body styles of ball valves: single body, three piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve especially the casing that contains the ball itself—are manufactured and assembled. The valve operation is the same in each case. | ||