Ring Joint Facings for Class 400 ASME B16.5 Flanges

1. Technical drawings of ring joint facings for Class 400 ASME B16.5 Flanges.

2. Dimensions of ring joint facings for Class 400 Flange Joints and Groove.

NPS	Groove Number	P inch mm	E inch mm	F inch mm	R inch mm	K inch mm	S inch mm
4‘’	37	5.875 149.23	0.312 6.35	0.469 11.91	0.03 0.8	6.88 175	0.22 6
5‘’	41	7.125 180.98	0.312 7.92	0.469 11.91	0.03 0.8	8.25 210	0.22 6
6‘’	45	8.312 211.12	0.312 7.92	0.469 11.91	0.03 0.8	9.50 241	0.22 6
8‘’	49	10.625 269.88	0.312 7.92	0.469 11.91	0.03 0.8	11.88 302	0.22 6
10‘’	53	12.750 323.85	0.312 7.92	0.469 11.91	0.03 0.8	14.00 356	0.22 6
12‘’	57	15.000 381.00	0.312 7.92	0.469 11.91	0.03 0.8	16.25 413	0.22 6
14‘’	61	15.625 419.10	0.312 7.92	0.469 11.91	0.03 0.8	18.00 457	0.22 6
16‘’	65	17.875 469.90	0.312 7.92	0.469 11.91	0.03 0.8	20.00 508	0.22 6
18‘’	69	20.375 533.40	0.312 7.92	0.469 11.91	0.03 0.8	22.62 575	0.22 6
20‘’	73	22.000 584.20	0.375 9.53	0.531 13.49	0.06 1.5	25.00 635	0.22 6
24‘’	77	26.500 692.15	0.438 11.13	0.656 16.66	0.06 1.5	29.50 749	0.25 6

1.For denotation of ” NPS, P, E, F, R, K, S “, please refer to ring joint facings for Class 300 ASME B16.5 flanges.

2. All dimensions are provided in mm and inch unit. The depth of the groove, E, shall be furnished with the same dimension as the height of the raised portion. The groove number of  ring joint facings for class 400 shall match the type R ring gaskets manufactured to ASME B16.20.

Ring Joint Facings for ASME B16.5 Flanges Classified by Classes
Class 150	Class 300	Class 400	Class 600	Class 900	Class 1500	Class 2500