Difference between revisions of "Disc Valves"

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[[Category:Valves]]{{Knoppen}}
[[Category:Valves]]{{Knoppen}}
[[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.




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
==Construction==
(as in a  
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.
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.

Latest revision as of 00:25, 12 January 2013

Disc Valves
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.

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