Threaded Orifice Class 300 Flanges

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Threaded Orifice Class 300

Threaded Orifice Class 300

												Drilling
Nom Size		OD	Thickness	OD of RF	Dia at Base	LTH	OD of Counter Bore		Counter Bore Depth (from face)		Dia of Pressure Connection	Bolt Circle	Hole Dia	# of Holes	Bolt Dia
		O	C	R	X	Y	Qb⁽²⁾	Qf⁽³⁾	F	G	TT
in.	1	4.88	1.5	2	2.12	1.88	1.41	1.3	1.44	0.75	1/4	3.5	0.69	4	5/8
mm.		124	38.1	50.8	53.8	47.8	35.8	33	36.6	19.1	6.4	88.9	17.5		15.9
in.	1 1/2	6.12	1.5	2.88	2.75	1.88	1.99	1.89	1.47	0.72	1/4	4.5	0.81	4	3/4
mm.		155.4	38.1	73.2	69.9	47.8	50.5	48	37.3	18.3	6.4	114.3	20.6		19.1
in.	2	6.5	1.5	3.62	3.31	1.94	2.5	2.36	1.5	0.69	1/4	5	0.69	8	5/8
mm.		165.1	38.1	91.9	84.1	49.3	63.5	59.9	38.1	17.5	6.4	127	17.5		15.9
in.	2 1/2	7.5	1.5	4.12	3.94	2	3	2.84	1.75	0.56	1/4	5.88	0.81	8	3/4
mm.		190.5	38.1	104.6	100.1	50.8	76.2	72.1	44.5	14.2	6.4	149.4	20.6		19.1
in.	3	8.25	1.5	5	4.62	2.06	3.63	3.46	1.81	0.56	3/8	6.62	0.81	8	3/4
mm.		209.6	38.1	127	117.3	52.3	92.2	87.9	46	14.2	9.5	168.1	20.6		19.1
in.	4	10	1.5	6.19	5.75	2.12	4.63	4.45	1.88	0.56	1/2	7.88	0.81	8	3/4
mm.		254	38.1	157.2	146.1	53.8	117.6	113	47.8	14.2	12.7	200.2	20.6		19.1
in.	6	12.5	1.5	8.5	8.12	2.12	6.75	6.57	1.88	0.31	1/2	10.62	0.88	12	3/4
mm.		317.5	38.1	215.9	206.2	53.8	171.5	166.9	47.8	7.9	12.7	269.7	22.4		19.1
in.	8	15	1.62	10.62	10.25	2.44	8.75	8.55	2.19	0.44	1/2	13	1	12	7/8
mm.		381	41.1	269.7	260.4	62	222.3	217.2	55.6	11.2	12.7	330.2	25.4		22.2

Welding Neck Orifice Class 300 Threaded Flange PDF (for printing).

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