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Turbine Bypass Valves in Steam Applications

by | Oct 14, 2020 | Valves, Actuators & Regulators

Jim Cahill

Jim Cahill

Chief Blogger, Social Marketing Leader

Steam is widely used across many industrial processes to perform mechanical work and serve as a heat transfer fluid. Based on the application steam can range from dry, superheated steam to desuperheated steam near its saturation point. Steam conditioning valves help to control the temperature, pressure and quality of the steam.

A 4-minute YouTube video, Sempell Turbine Bypass Valves explains how these steam conditioning valves control steam with greater efficiency and accuracy. These valves include unique steam atomizing steam desuperheating nozzles, tailor made trims, and pressure balancing features to support a wide range of applications.

For turbine bypass systems which require superheated steam, the Sempell turbine bypass valves enable precise steam flow control, pressure reduction, and accurate temperature control. The video highlights key design elements such as spring-loaded packing with safety function, self-sealing bonnets, pressure-balanced trim, and more.

An atomizing steam desuperheating nozzle provides steam-assisted atomization of cooling water and precise temperature control with protection from thermal shock and droplet erosion. This steam conditioning valve works by controlling the combination of superheated steam with cooling water to produce the process steam required for its application. The video illustrates how this works at the 1:40 mark.

Watch the video to see more on how this valve is designed for servicing and how they can be driven by electric, pneumatic or hydraulic actuators.

Visit the Sempell valves section on Emerson.com for more on these and other control, safety and isolation valves for your steam applications. You can also connect and interact with other valve experts in the Valves, Actuators & Regulators group in the Emerson Exchange 365 community.

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The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.