Segmented Ball Valves
Fisher segmented ball valves provide high capacity, precise control across a broad range of applications.
A segmented ball valve is similar to a conventional ball valve, but with a contoured V-notch segment in the ball. This control valve has good rangeability, control, and shutoff capability. The V-notch ball provides positive shearing action and produces an inherent equal percentage flow characteristic. It provides non-clogging, high capacity flow control. The V-notch ball has been specially contoured to maximize capacity and enhance seal life and shutoff integrity.
The two-piece shaft allows for an enlarged center flow path. A drive shaft is connected to one side of the segmented ball and a follower shaft is connected to the opposite side. As the drive shaft is rotated, the ball rotates to expose a flow path through the V-notch. This V-notch allows for a large flow range due to small flow area at low travel and a large flow area at maximum travel.
Two types of body end connections are available for segmented ball valves, flangeless or flanged.
To meet specific application requirements, a variety of metal and soft ball seal materials are available.
This slurry version of the V-notch ball valve contains erosion-resistant trim components that protect the body from erosive wear. Its body liner, V-notch ball, and flow ring are all constructed of high-chromium iron, which provide protection against erosive flow. A ceramic flow ring insert is available for especially aggressive slurry services.