Delta Auto Drain for SteamScape SMP Series GeneratorsThe Delta Auto Drain is an optional add on to the 5GE SMP Series Steam Generator that automatically purges water from the system after each steam shower. Features: Automatically purges the system by gravity once water in the generator cools Connects to a factory installed auto drain terminal block located inside the generator cabinet Valve body with 1 2" NPT brass female connection Normally Closed Valve (N. C.) Designed for use with 208V and 240V 5GE