West Coast Water Utility Manages Flow Fluctuations With Single Rolling Diaphragm Valves

A west coast utility decided to change all the pressure reducing valves (PRVs) in their water distribution system that was predominantly monitored and controlled based on flow demands. With numerous line connections and pressure zones, coupled with a growing population, the fluctuating demand was putting unnecessary over pressure on the distribution system. One of the problems that needed addressing was when a downstream high-pressure event occurred, the seat of the main valve of the old flat diaphragm valves would chatter. This wear and tear resulted in the need for more maintenance to monitor and replace the valve seats in order to avoid a valve failure.