Retrofit Design

Health Care and Laboratories

Clement J. Zablocki, Veterans Affairs Medical Center, Milwaukee, WI – Chilled Water Balancing Valve Retrofit
Design included the replacement of plug balancing valves on each coil return piping circuit with venturi-type flow measuring balancing valves on the secondary chilled water piping system. Supply headers were designed to have calibrated balance valves with memory stop to balance each coil bank. Ninety-nine valves were installed and the entire chilled water system was re-balanced (1998).