Use this 1 in. copper pressure adapter to join solder connections to threaded connections in commercial and residential settings. It is ideal for use with potable water, air conditioning and refrigeration systems. This male-threaded adapter is designed for water-supply piping aboveground and requires pressure to maintain its flow. It features a maximum working pressure of 494 psi. Constructed from high-quality copper, this pressure adapter resists dezincification for mechanical integrity.