description/material item description qty (pcs) class (pn) inch (dn) mm (dn) serial no. ends body ball stem seat bolts 32 trunnion ball valve, rf, fb, 3p, f51, dbb, lop 40 60 0 2" 50 509530/158/1 ~ 40 rf astm a182 f51 astm a182 f51 astm a182 f51 cptfe astm a193 b8m2