August 2002

Special Report: Fluid Flow and Rotating Equipment

Using ball valves in control applications

They can provide performance improvements for less cost

Brucken, F. W., B-Controls

Ball control valves, the most important design of the quarter-turn control valve (QTCV) family, have become important control hardware for the process industries. Market analysts report that they represent 14.5% of all control valves installed in petrochemical process units. Furthermore, it is reported that ball control valve packages are increasing 4.5% per year in market share compared to linear control valve sales. Several technological developments are responsible for this growth. The most important drivers for this market are: Specific cost of $/cv value Lower cost per valve size and/or control loop

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