Large-Diameter Influent Control Valves on California City’s Force Main
Challenge
A city in California responded to population growth and aging infrastructure with the construction of a new, high-capacity force main for its municipal waste. The force main serves as a backup for the city’s existing 40-year-old force main, which runs parallel to the new line.
Solution
The city consulted a local engineer who specified Red Valve’s Large-Diameter Series 5400 Influent Flow Control Valves. Eleven 36-inch, electrically actuated Series 5400s were purchased for on/off service at the intersection between the two force mains and for throttling control at the entrance to the wastewater treatment plant, located in a neighboring city.
Results
The Red Valve Series 5400 provided many advantages, resulting in a highly successful solution for for both of these applications. The full-ported elastomer sleeve allowed for unrestricted flow when opened, providing a bi-directional, droptight seal when closed, making it ideal for on/off service. The valves maintain excellent long-term throttling accuracy, as the sleeves will not corrode upon contact with the untreated, highly solid wastewater. The sleeves contain no cavities or dead space, so smooth, unidirectional flow is maintained.