Repair of flush valve components, rather than replacement of the entire unit, saves money and resources. Zurn’s ground joint control stop adapter (Part no. P6000-J10) is designed to fit AquaVantage and AquaFlush flush valves. It features a black O-ring with a metal adapter constructed of chrome-plated cast brass. Zurn flush valve replacement parts and retrofit kits can be used to upgrade any diaphragm type flush valves. When you need a replacement part for repair or maintenance of a flush valve, trust Zurn for genuine, reliable parts.