316 Stainless steel;200 PSI working pressure at 73 Degree F (23 Degree C). 1-1/4" to 2" fittings;Female NPT threaded for easy adaptation to IPS/CTS polyethylene & PVC pipe with Cepex male adapters;Compact one piece design with curb stop, clean out, and check valve;Fully serviceable check valve with vertical service port