Mueller® resilient wedge gate valves now have an option for a purple pentagon-shaped wrench nut, intended for reclaimed water service installations. This wrench nut introduces two distinguishing features: a unique shape requiring a special key for improved security and a purple finish to quickly identify reclaimed water. Purple is recognized by the American Public Works Association to identify “reclaimed” water line components and was adopted in 1980 by the AWWA California-Nevada Section for reclaimed water pipelines.
