Resilient Seated Gate Valve Outside Screw And Yoke

What is a Resilient Seated Gate Valve (OS&Y)?

A resilient seated gate valve with outside screw and yoke (OS&Y) is a type of gate valve where the stem rises visibly when the valve opens. The resilient seat ensures tight sealing by embedding a rubber-coated gate, typically used in water supply pipelines.

Working Principle

The OS&Y gate valve operates by lifting a fully encapsulated rubber gate through an externally threaded stem. As the handwheel turns, the threaded stem moves vertically, raising or lowering the gate. This design offers clear visual indication of the valve's open or closed status. The resilient rubber coating provides a secure, leak-tight seal even under low-pressure conditions.

Key Features

• ● Fully rubber-encapsulated wedge for superior sealing
• ● Forged bronze rising stem nut for durability
• ● Compliant with GSK eco-friendly epoxy coating standards

Applications

• ● Municipal water distribution systems
• ● Industrial and commercial plumbing
• ● Water treatment facilities
• ● Building service water lines

Alternative Type

Non-rising stem resilient seated gate valves offer a compact and efficient design ideal for limited-space installations such as underground pipelines or chambers. Unlike rising stem valves, the stem does not move vertically during operation, making them suitable for buried or concealed systems. These valves maintain excellent sealing performance with a resilient rubber seat and corrosion-resistant coating.