Product Information Material: 316 Stainless Steel Seat: R-PTFE Thread: female NPT x female NPT Select a Product Part NumberSize SSBV383/8" SSBV1501-1/2" SSBV1001" SSBV2502-1/2" SSBV3003" SSBV2002" SSBV1251-1/4" SSBV251/4" SSBV501/2" SSBV753/4"