OS&Y Rising Stem Gate Valve 

The OS&Y (Outside Screw and Yoke) rising stem gate valve is a versatile linear motion valve designed for flow regulation in industrial piping systems. It consists of a rugged cast iron body and bonnet, an internal gate disc, threaded rising stem, and handwheel operator.

The gate disc is the flow control element. It slides up and down within the valve body, perpendicular to the flow path. When lowered fully into the seat, the gate provides drip-tight shutoff, stopping fluid flow through the valve. Raising the disc opens the flow way to allow fluid passage.

The gate is actuated by the threaded rising stem, which connects the disc solidly to the handwheel on top. Turning the handwheel raises and lowers the stem in a smooth, precise motion to throttle flow with control. The stem threads into the bonnet, providing a robust seal against pressure and preventing exposure of the stem to corrosive media.

OS&Y valves are ruggedly constructed for strength, durability and long service life. The cast iron body and bonnet resists wear, pressure surges, vibrations, and high temperatures. The rising stem design enables tight sealing and prevents stem exposure to protect against corrosion. The threaded bonnet provides easy access to internal components for inspection, cleaning and part replacement.

With their superior flow control abilities, OS&Y rising stem gate valves are well-suited for isolation, throttling, and diversion duties in water, steam, oil, gas, chemical, and general industrial piping applications.

OS&Y Rising Stem Gate Valve Technical Advantages

OS&Y Rising Stem Gate Valve Materials

OS&Y Rising Stem Gate Valve features:

     • Rising stem design – The threaded stem rises up out of the valve bonnet as the valve is opened, allowing visual confirmation of valve position. The non-rising stem prevents exposure of the stem to the fluid media.

     • Threaded bonnet – The bonnet is threaded to the valve body, providing a robust seal and easy access to internal components for maintenance.

     • Handwheel operation – A handwheel is attached to the stem top for opening and closing the valve. The handwheel provides leverage for ease of operation.

     • Cast iron body – Durable cast iron construction allows the valve to withstand high pressures and temperatures across various applications.

     • Tight sealing – The gate provides drip-tight shutoff when fully closed, preventing fluid leakage past the valve seat.