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Difference between revisions of "Disc Valves"
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Disc Valve is a movable obstruction inside the stationary body that adjustably restricts flow through the valve. Although traditionally disc-shaped, discs come in various shapes. Depending on the type of valve, a disc can move linearly inside a valve, or rotate on the stem , or rotate on a hinge or trunnion | |||
(as in a | |||
check valve | |||
). A | |||
ball | |||
is a round valve member with one or more paths between ports passing through it. By rotating the ball, flow can be directed between different ports. | |||
Ball valves | |||
use spherical rotors with a cylindrical hole drilled as a fluid passage. | |||
Plug valves | |||
use cylindrical or conically tapered rotors called | |||
plugs | |||
. | |||
[ambiguous] | |||
Other round shapes for rotors are possible as well in | |||
rotor valves | |||
, as long as the rotor can be turned inside the valve body. However not all round or spherical discs are rotors; for example, a ball | |||
check valve | |||
uses the ball to block reverse flow, but is not a rotor because operating the valve does not involve rotation of the ball. | |||