VALVE SIZE		A1 (RF)		A2 (RTJ)		A3 (BW)		A4 (SW)		W
NPS	DN	In	mm	in	mm	in	mm	in	mm	in	mm
2	50	14.50	368	14.62	371	14.50	368	14.50	368	20	500
2 1/2	65	16.50	419	16.62	422	16.50	419	16.50	419	20	500
3	80	15.00	381	15.12	384	15.00	381	15.00	381	20	500
4	100	18.00	457	18.12	460	18.00	457	18.00	457	24	600
6	150	24.00	610	24.12	613	24.00	610	24.00	610	24	600
8	200	29.00	737	29.12	740	29.00	737	29.00	737	24	600
10	250	33.00	838	33.12	841	33.00	838	33.00	838	24	600
12	300	38.00	965	38.12	968	38.00	965	38.00	965	32	800
14	350	40.50	1029	40.90	1039	40.50	1029	40.50	1029	32	800
16	400	44.50	1130	44.88	1140	44.50	1130	44.50	1130	32	800
18	450	48.00	1219	48.50	1232	48.00	1219	48.00	1219	32	800
20	500	52.00	1321	52.50	1334	52.00	1321	52.00	1321	32	800
24	600	61.00	1549	61.75	1568	61.00	1549	61.00	1549	32	800