Dimensions
Flanged Triple Offset Butterfly Valves

Triple Offset Butterfly Valve Short pattern

Triple Offset Butterfly Valve Long pattern

ASME Class 150

NPS	A	D	E		F	H
NPS	A	D	Long pattern	Short pattern	F	H
3	279	247	203	114	52	142
4	326	294	229	127	52	142
6	346	314	267	140	52	196
8	408	369	292	152	67	233
10	443	399	330	165	89	286
12	499	442	356	178	123	338
14	576	519	381	191	123	338
16	628	551	406	216	154	363
18	671	610	432	222	59	484
20	734	640	457	229	97	516
24	835	742	508	267	181	567

ASME Class 300

NPS	A	D	E		F	H
NPS	A	D	Long pattern	Short pattern	F	H
3	279	247	282	114	52	142
4	326	294	305	127	52	142
6	384	315	403	140	67	67
8	438	394	419	152	89	67
10	531	476	457	165	123	338
12	584	508	502	178	154	395
14	620	559	762	191	60	472
16	659	593	838	216	97	503
18	732	639	914	222	181	567
20	780	510	991	229	181	599
24	950	856	1143	267	237	692

ASME Class 600

NPS	A	D	E		F	H
NPS	A	D	Long pattern	Short pattern	F	H
4	335	310	432	191	67	223
6	417	374	559	210	89	248
8	543	467	660	230	154	387
10	584	523	787	249	138	464
12	651	558	838	270	181	496

All dimensions are in millimeters unless otherwise specified
Reference for dimensions and images... www.velan.com
It is possible that other valve suppliers, have different sizes
However, the "E" sizes, long and short pattern should be the same

Dimensions Flanged Triple Offset Butterfly Valves

Dimensions
Flanged Triple Offset Butterfly Valves