Class 400WN Flanges - Texas Flange

Special One or Two Piece Ring and Orifice Plate Assembly - Groove Detail

Ring Type Joint Weld Neck Orifice Flanges Class 400 - 2500

Raised Face Weld Neck Orifice Flanges Class 400 - 2500

(Click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions)

									Drilling						Ring Type Joint
	Nom Size	OD	Thickness	OD of RF	Dia at Base	Dia Bevel	LTH	Dia of Pressure Connection	Bolt Circle	Hole Dia	# of holes	Bolt Dia	Grove #	Pitch Dia	Groove Depth	Groove width	Rad at Bottom	Spec Oval RH
		O	C	R	X	A	Y	TT						P	E	F	r max	W
in	4	10	1.5	6.19	5.75	4.5	3.5	1/2	7.88	1	8	7/8	R37	5.875	0.312	0.469	0.03	1.06
mm		254	38.1	157	146	114.3	88.9	12.7	200.2	25.4		22.2		149.225	7.925	11.913	0.8	26.9
in	6	12.5	1.62	8.5	8.12	6.63	4.06	1/2	10.62	1	12	7/8	R45	8.312	0.312	0.469	0.03	1.06
mm		317.5	41.1	216	206	168.4	103	12.7	269.7	25.4		22.2		211.125	7.925	11.913	0.8	26.9
in	8	15	1.88	10.62	10.25	8.63	4.62	1/2	13	1.12	12	1	R49	10.625	0.312	0.469	0.03	1.06
mm		381	47.8	270	260	219.2	117	12.7	330.2	28.4		25.4		269.875	7.925	11.913	0.8	26.9
in	10	17.5	2.12	12.75	12.62	10.75	4.88	1/2	15.25	1.25	16	1 1/8	R53	12.75	0.312	0.469	0.03	1.06
mm		444.5	53.8	324	321	273.1	124	12.7	387.4	31.8		28.6		323.850	7.925	11.913	0.8	26.9
in	12	20.5	2.25	15	14.75	12.75	5.38	1/2	17.75	1.38	16	1 1/4	R57	15	0.312	0.469	0.03	1.06
mm		520.7	57.2	381	375	323.9	137	12.7	450.9	35.1		31.8		381.000	7.925	11.913	0.8	26.9
in	14	23	2.39	16.25	16.75	14	5.88	1/2	20.25	1.38	20	1 1/4	R61	16.5	0.312	0.469	0.03	1.06
mm		584.2	60.7	413	426	355.6	149	12.7	514.4	35.1		31.8		419.100	7.925	11.913	0.8	26.9
in	16	25.5	2.5	18.5	19	16	6	1/2	22.5	1.5	20	1 3/8	R65	18.5	0.312	0.469	0.03	1.19
mm		647.7	63.5	470	483	406.4	152	12.7	571.5	38.1		34.9		469.900	7.925	11.913	0.8	30.2
in	18	28	2.62	21	21	18	6.5	1/2	24.75	1.5	24	1 3/8	R69	21	0.312	0.469	0.03	1.19
mm		711.2	66.5	533	533	457.2	165	12.7	628.7	38.1		34.9		533.400	7.925	11.913	0.8	30.2
in	20	30.5	2.75	23	23.12	20	6.62	1/2	27	1.62	24	1 1/2	R73	23	0.375	0.531	0.06	1.25
mm		774.7	69.9	584	587	508	168	12.7	685.8	41.1		38.1		584.200	9.525	13.487	1.5	31.8
in	24	36	3	27.25	27.62	24	6.88	1/2	32	1.89	24	1 3/4
mm		914.4	76.2	692.2	702	609.6	174.8	12.7	812.8	48		44.5

Note: Weld neck flanges NPS 3″ and smaller are identical to Class 600 flanges and may be so marked.

(1) Bore diameter to be specified by purchaser
(2) Other NPT and SW connections available upon request.
Welding Neck Orifice Class 400 Flange PDF (for printing).