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OS&Y Gate Valve
OS&Y Gate Valve is a fire-rated isolation valve designed for fire protection systems, providing clear visual indication of valve position and reliable shut-off performance.
Product Features
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Outside Screw & Yoke (OS&Y) design for visual position indication
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Rising stem for easy open/close status verification
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Designed specifically for fire protection systems
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Flanged ends for secure installation
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Smooth gate movement with tight shut-off
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Corrosion-resistant epoxy coating
Technical Specifications
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Valve Type: Gate Valve (OS&Y)
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Stem Type: Rising stem (Outside Screw & Yoke)
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Connection Type: Flanged
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Application: Fire protection & sprinkler systems
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Operation: Handwheel operated
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Body Material: Ductile iron / cast iron
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Coating: Red epoxy, fire-rated
The OS&Y (Outside Screw & Yoke) Gate Valve is widely used in fire protection and sprinkler systems as a primary isolation valve. Its externally mounted stem design provides a clear and visible indication of whether the valve is open or closed, making it ideal for safety-critical applications.
When the valve is opened, the stem rises; when closed, the stem lowers—allowing instant visual status verification. This feature makes OS&Y gate valves compliant with fire safety standards and suitable for supervisory monitoring systems.
Manufactured from high-strength materials and coated with corrosion-resistant epoxy, the OS&Y Gate Valve ensures long service life, smooth operation, and dependable sealing under high-pressure fire system conditions.


