Difference between revisions of "Swing Valves"
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[[File:Swing valve.jpg|thumb|right|Swing Valves]] | |||
'''Swing Valve''' is a form of butterfly check valve in which the disc swings on and off the seat on a hinge or trunnion to block and allow flow. Swing valves come in various sizes, but are frequently large.These check valve having a hinged gate which permits fluid to pass through the valve only in one direction; esp. used where fluid velocities are low. | |||
* | |||
* | The valve allows full, unobstructed flow and automatically closes as pressure decreases. These valves are fully closed when the flow reaches zero and prevent back flow. Turbulence and pressure drop within the valve are very low. | ||
* | |||
* | Swing valves are available in either Y-pattern or straight body design. In either style, the | ||
* | disk and hinge are suspended from the body by means of a hinge pin. Seating is either metal-to-metal or metal seat to composition disk. Composition disks are usually recommended for services where dirt or other particles may be present in the fluid, where noise is objectionable,or where positive shutoff is required. | ||
==Features== | |||
* Body and cover made from high quality casting with liberal sections. The castings are precision machined for high performance | |||
* Body seat ring and disc machined to close tolerances providing smooth action and accurate seating. | |||
* Seat ring screwed in to the body and replaceable type. Seal welded type seat ring and integral seat cab also be offered on special request. | |||
* Stellited seat ring and disc also can be offered on special request. | |||
* In built wear life for long duration of service. | |||
Latest revision as of 08:56, 10 January 2013
Swing Valve is a form of butterfly check valve in which the disc swings on and off the seat on a hinge or trunnion to block and allow flow. Swing valves come in various sizes, but are frequently large.These check valve having a hinged gate which permits fluid to pass through the valve only in one direction; esp. used where fluid velocities are low.
The valve allows full, unobstructed flow and automatically closes as pressure decreases. These valves are fully closed when the flow reaches zero and prevent back flow. Turbulence and pressure drop within the valve are very low.
Swing valves are available in either Y-pattern or straight body design. In either style, the disk and hinge are suspended from the body by means of a hinge pin. Seating is either metal-to-metal or metal seat to composition disk. Composition disks are usually recommended for services where dirt or other particles may be present in the fluid, where noise is objectionable,or where positive shutoff is required.
Features
- Body and cover made from high quality casting with liberal sections. The castings are precision machined for high performance
- Body seat ring and disc machined to close tolerances providing smooth action and accurate seating.
- Seat ring screwed in to the body and replaceable type. Seal welded type seat ring and integral seat cab also be offered on special request.
- Stellited seat ring and disc also can be offered on special request.
- In built wear life for long duration of service.