CPVC Brass FTA: High-Performance Female Threaded Adapter for Reliable Connections The CPVC Brass FTA (Female Threaded Adapter) is a critical fitting for creating secure and leak-proof connections in hot and cold water plumbing systems. By combining the heat resistance of CPVC (Chlorinated Polyvinyl Chloride) with the strength of brass, this adapter delivers exceptional performance and longevity in residential, commercial, and industrial settings.