supply of ball valve bsp a216 wcb 150 15mm is 11792 bs 5351 iso 17292 asme b16.34 ball valve steel nominal dia 15mm type single piece configuration pressure rating 150 body material a216 wcb a105 ball material aisi 316 ss astm a351 gr. cf8m stem material aisi 316 gland material aisi 316 end connection bsp female thread testing as per bs en 12266 1 iso 5208