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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

  • Outside Screw & Yoke (OS&Y) design for visual position indication

  • Rising stem for easy open/close status verification

  • Designed specifically for fire protection systems

  • Flanged ends for secure installation

  • Smooth gate movement with tight shut-off

  • Corrosion-resistant epoxy coating


Technical Specifications

  • Valve Type: Gate Valve (OS&Y)

  • Stem Type: Rising stem (Outside Screw & Yoke)

  • Connection Type: Flanged

  • Application: Fire protection & sprinkler systems

  • Operation: Handwheel operated

  • Body Material: Ductile iron / cast iron

  • 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.