1/4" Female NPT threads for connecting to 1/4" male threaded pipes 
Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability 
1200 PSI working pressure, Temperature range of -65°F to 250°F (-53°C to 121°C) 
These fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.