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Difference between revisions of "Disc Valves"
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[[File:Disc Valves.jpg|thumb|right|Disc Valves]] | |||
[[File:Disc Valves1.jpg|thumb|right|Disc Valves]] | |||
'''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. 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. | |||
Disc valves are suitable for all types of ventilation systems. They have been redesigned and thus satisfy the highest standards for comfort criteria. Depending on the application, different constructions for supply and extract air are available. By rotating the central disc, the air volume flow rate can be changed. This results in changes to acoustic and pressure drop figures. | |||
==Construction== | |||
Disc valves consist of the valve ring and central disc. To guarantee a perfect seat, the valve ring is fitted with a peripheral sealing strip. The air volume flow rate is adjusted by rotating the central disc which alters the size of the gap. The central disc is held in position with a locknut. | |||