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ASME B16.5 Class 900
Blind Flange

ASME B16.5 Class 900 Blind Flange Technical Drawing

DIMENSIONAL DATA

NPS	Flange OD (O)	Thickness (T)	Bolt Circle Dia.	No. of Holes	Hole Dia.	Approx. Weight LBS	Approx. Weight KGS
1/2	4.75	0.88	35.50	20	2.63	-	-
3/4	5.12	1.00	3.50	4	0.88	-	-
1	5.88	1.12	4.00	4	1.00	-	-
1-1/4	6.25	1.12	4.38	4	1.00	-	-
1-1/2	7.00	1.25	4.88	4	1.13	-	-
2	8.50	1.50	6.50	8	1.00	-	-
2-1/2	9.62	1.62	7.50	8	1.13	-	-
3	9.50	1.50	7.50	8	1.00	-	-
4	11.50	1.75	9.25	8	1.25	-	-
5	13.75	2.00	11.00	8	1.38	-	-
6	15.00	2.19	12.50	12	1.25	-	-
8	18.50	2.50	15.50	12	1.50	-	-
10	21.50	2.75	15.50	12	1.50	-	-
12	24.00	3.12	21.00	20	1.50	-	-
14	25.25	3.38	22.00	20	1.63	-	-
16	27.75	3.50	24.25	20	1.75	-	-
18	31.00	4.00	27.00	20	2.00	-	-
20	33.75	4.25	29.50	20	2.13	-	-
24	41.00	5.50	35.50	20	2.63	-	-

NPS	Flange OD (O)	Thickness (T)	Bolt Circle Dia.	No. of Holes	Hole Dia.	Approx. Weight LBS	Approx. Weight KGS
1/2	121	22.4	82.55	4	22.35	-	-
3/4	130	25.4	88.90	4	22.35	-	-
1	149	28.4	101.6	4	25.4	-	-
1-1/4	159	28.4	111.25	4	25.4	-	-
1-1/2	178	31.8	123.95	4	28.70	-	-
2	216	38.1	165.1	8	25.4	-	-
2-1/2	244	41.1	190.5	8	28.70	-	-
3	241	38.1	190.5	8	25.4	-	-
4	292	44.5	234.95	8	31.75	-	-
5	349	50.8	279.4	8	35.05	-	-
6	381	55.6	317.5	12	31.75	-	-
8	470	63.5	393.7	12	38.10	-	-
10	546	69.8	469.9	16	38.10	-	-
12	610	79.2	533.4	20	38.10	-	-
14	641	85.9	558.8	20	41.40	-	-
16	705	88.9	615.95	20	44.45	-	-
18	787	101.6	685.8	20	50.8	-	-
20	857	108	749.3	20	54.10	-	-
24	1041	139.7	901.7	20	66.80	-	-

Dimensions are based on ASME B16.5 Class 900 flange requirements. Refer to the applicable standard for complete dimensional requirements.

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