Inside infrastructure, there’s a simple device called check valves quietly protecting water systems from chaos, stopping dirty water from flowing backward, and keeping everything running smoothly amid bigger storms, tighter regulations, and growing cities. In this episode, Cal Hayes from Proco Products explains the vital role of check valves. He explains how they need zero maintenance or power, making them ideal for handling sewage backups in treatment plants and at coastal outfalls to avoid costly overflows. Cal shares how innovative valves mix drinking water reservoirs more effectively, cutting down on chemicals and downtime for greener, more reliable supplies. In tough spots like massive ocean waves near Djibouti or flood-prone shores in New Jersey, flexible rubber versions hold up against harsh conditions. He also spotlights smart adaptations in Oregon, where valves spread treated wastewater gently to protect rivers and wildlife.Learn more about Proco Products.waterloop is a nonprofit news outlet exploring solutions for water sustainability.