½¨ npt-f x ½¨ 150/60# vent/isolate: yes bracket-holes: no equalize: no     type in x out thread type body stem packing A28S 1/2" 150/600#x1/2" bsp Carbon steel AISI 304 AISI 316 AISI 316L Monel Hastelloy C HS SO PTFE glass filled PTFE grafoil