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	18.50	470	18.62	473	18.50	470	18.50	470	24	600
4	100	21.50	546	21.62	549	21.50	546	21.50	546	24	600
6	150	27.75	705	28.00	711	27.75	705	27.75	705	24	600
8	200	32.75	832	33.12	842	32.75	832	32.75	832	32	800
10	250	39.00	991	39.38	1001	39.00	991	39.00	991	32	800
12	300	44.50	1130	45.12	1146	44.50	1130	44.50	1130	32	800
14	350	49.50	1257	50.25	1276	49.50	1257	49.50	1257	32	800
16	400	54.50	1384	55.38	1406	54.50	1384	54.50	1384	32	800