Liberty's CSV150SS is a 1-1/2" FNPT curb stop / swing check valve assembly, machined from 316 stainless steel for PE/PVC pressure piping applications. It's a compact one-piece design combining a curb stop, clean-out, and a fully serviceable check valve with a vertical service port, female NPT threaded for easy adaptation to IPS/CTS polyethylene and PVC pipe with Cepex male adapters. Rated 200 PSI working pressure at 73°F.