Use this 1/2 in. copper C x FPT adapter to adapt solder connections to threaded connections in commercial and residential settings. It is ideal for use with potable water, air conditioning and refrigeration systems. This female-threaded adapter is designed for water-supply piping aboveground and requires pressure to maintain its flow. It features a maximum working pressure of 722 PSI. Constructed from high-quality copper, this pressure adapter resists dezincification to preserve its mechanical strength.