The 1″ Threaded Coupling with Ball Valve is a connector designed for EZ-FLO fertilizer injection systems that use threaded PVC piping. It allows secure attachment of injectors to irrigation mainlines while providing a built-in ball valve to adjust differential pressure, ensuring precise and consistent fertigation. The body is made from durable Schedule 40 PVC, and the ¼″ 304 stainless steel barbed tubing connections resist corrosion and chemical exposure from fertilizers.