Pumps and Hydraulics, Part 2 (of 2)

by N. Hawkins

SCHEDULE OF STANDARD FLANGES.

Adopted July 18, 1894, by a Committee of the Master Steam and Hot Water Fitters’ Association, a Committee of the Society of Mechanical Engineers of the United States, and the leading valve and fitting manufacturers of the United States.

Pipe size, Inches.	Pipe thickness, (P + 100) .4S d + .333(1 - d⁄100) S-18,000 lbs.	Thickness nearest fraction, inches.	Stress on pipe per square inch at 200 lbs.	Radius of fillet, inches.
2	.409	7⁄16	460	1⁄8
21⁄2	.429	7⁄16	550	1⁄8
3	.448	7⁄16	690	1⁄8
31⁄2	.466	1⁄2	700	1⁄8
4	.486	1⁄2	800	1⁄8
41⁄2	.498	1⁄2	900	1⁄8
5	.525	1⁄2	1,000	1⁄8
6	.563	9⁄16	1,060	1⁄8
7	.60	5⁄8	1,120	1⁄8
8	.639	5⁄8	1,280	1⁄8
9	.678	11⁄16	1,310	3⁄16
10	.713	3⁄4	1,330	3⁄16
12	.79	13⁄16	1,470	3⁄16
14	.864	7⁄8	1,600	3⁄16
15	.904	15⁄16	1,600	3⁄16
16	.946	1	1,600	3⁄16
18	1.02	11⁄16	1,690	3⁄16
20	1.09	11⁄8	1,780	3⁄16
22	1.18	13⁄16	1,850	1⁄4
24	1.25	11⁄4	1,920	1⁄4
26	1.30	15⁄16	1,980	1⁄4
28	1.38	13⁄8	2,040	1⁄4
30	1.48	11⁄2	2,000	1⁄4
36	1.71	13⁄4	1,920	1⁄4
42	1.87	2	2,100	1⁄4
48	2.17	21⁄4	2,130	1⁄4

Pipe size, Inches.	Flange diameter, inches.		Flange thickness at hub for iron pipe, inches.	Flange thickness at edge, inches.		Width flange face, inches.
2		6	1		5⁄8		2
21⁄2		7	11⁄8		11⁄16		21⁄4
3		71⁄2	11⁄4		3⁄4		21⁄4
31⁄2		81⁄2	11⁄4		13⁄16		21⁄2
4		9	13⁄8		15⁄16		21⁄2
41⁄2		91⁄4	13⁄8		15⁄16		23⁄8
5		10	11⁄2		15⁄16		21⁄2
6		11	11⁄2		1		21⁄2
7		121⁄2	11⁄2		11⁄16		23⁄4
8		131⁄2	13⁄4		11⁄8		23⁄4
9		15	13⁄4		11⁄8		3
10		16	2		13⁄16		3
12		19	2		11⁄4		31⁄2
14		21	2		13⁄8		31⁄2
15		221⁄4	2		15⁄8		35⁄8
16		231⁄2	21⁄4		17⁄16		33⁄4
18		25	....		19⁄16		31⁄2
20		271⁄2	....		111⁄16		33⁄4
22		291⁄2	....		113⁄16		33⁄4
24	311⁄2	32	....	11⁄4	17⁄8	33⁄4	4
26	333⁄4	341⁄4	....	13⁄8	2	37⁄8	41⁄8
28	36	361⁄2	....	17⁄16	21⁄16	4	41⁄4
30	38	383⁄4	....	11⁄2	21⁄8	4	43⁄8
36	441⁄2	453⁄4	....	13⁄4	23⁄8	41⁄4	47⁄8
42	51	523⁄4	....	17⁄8	25⁄8	41⁄2	53⁄8
48	571⁄2	591⁄2	....	2	23⁄4	43⁄4	53⁄4

Pipe size, Inches.	Width flange face, inches.		Bolt circle diameter, inches.		Number of bolts.	Bolt size diameters, inches.		Bolt length, inches.	Stress on each bolt, per square inch at bottom of thread at 200 lbs.
2		2		43⁄4	4	1⁄2	5⁄8	2	825
21⁄2		21⁄4		51⁄2	4	1⁄2	5⁄8	21⁄4	1,050
3		21⁄4		6	4	1⁄2	5⁄8	21⁄2	1,330
31⁄2		21⁄2		7	4	1⁄2	5⁄8	21⁄2	2,530
4		21⁄2		71⁄2	4	3⁄8	3⁄4	23⁄4	2,100
41⁄2		23⁄8		73⁄4	8	5⁄8	3⁄4	3	1,430
5		21⁄2		81⁄2	8	5⁄8	3⁄4	3	1,630
6		21⁄2		91⁄2	8	5⁄8	3⁄4	3	2,360
7		23⁄4		103⁄4	8	5⁄8	3⁄4	31⁄4	3,200
8		23⁄4		113⁄4	8	5⁄8	3⁄4	31⁄2	4,190
9		3		131⁄4	12	5⁄8	3⁄4	31⁄2	3,610
10		3		141⁄4	12	5⁄8	7⁄8	35⁄8	2,970
12		31⁄2		17	12	3⁄4	7⁄8	33⁄4	4,280
14		31⁄2		183⁄4	12	7⁄8	1	41⁄4	4,280
15		35⁄8		20	16	7⁄8	1	41⁄4	3,660
16		33⁄4		211⁄4	16	7⁄8	1	41⁄4	4,210
18		31⁄2		223⁄4	16	1	17⁄8	43⁄4	4,540
20		33⁄4		25	20	1	11⁄8	5	4,490
22		33⁄4		271⁄4	20	1	11⁄4	51⁄2	4,320
24	33⁄4	4	291⁄4	291⁄2	20	1	11⁄4	51⁄2	5,130
26	37⁄8	41⁄8	311⁄4	313⁄4	24	1	11⁄4	53⁄4	5,030
28	4	41⁄4	331⁄2	34	28	1	11⁄4	6	5,000
30	4	43⁄8	351⁄2	36	28	11⁄8	13⁄8	61⁄4	4,590
36	41⁄4	47⁄8	42	423⁄4	32	11⁄8	13⁄8	61⁄2	5,790
42	41⁄2	53⁄8	481⁄2	491⁄2	36	11⁄4	11⁄2	71⁄4	5,700
48	43⁄4	53⁄4	543⁄4	56	44	13⁄8	11⁄2	73⁄4	6,090

DIMENSIONS OF CAST IRON PIPE, FLANGES, ETC.

(J. E. Codman, Engineers’ Club of Philadelphia, 1889.)

Diameter of Pipe.	Diameter of Flange.	Diameter of Bolt Circle.	Diameter of Bolt.	Number of Bolts.
2	61⁄4	43⁄4	3⁄4	4
3	71⁄2	57⁄8	3⁄4	4
4	9	7	3⁄4	6
5	93⁄4	8	3⁄4	6
6	103⁄4	91⁄8	3⁄4	8
8	131⁄4	113⁄8	3⁄4	8
10	151⁄4	131⁄4	3⁄4	10
12	173⁄4	153⁄4	7⁄8	12
14	20	18	7⁄8	14
16	22	20	7⁄8	16
18	24	221⁄4	7⁄8	16
20	27	241⁄2	1	18
22	283⁄4	261⁄2	1	20
24	311⁄4	283⁄4	1	22
26	331⁄4	31	1	24
28	351⁄2	331⁄4	1	24
30	38	351⁄2	1	26
32	40	371⁄2	11⁄8	28
34	421⁄4	40	11⁄8	30
36	45	42	11⁄8	32
38	47	44	11⁄8	32
40	49	46	11⁄8	34
42	511⁄4	481⁄4	11⁄8	34
44	531⁄2	501⁄4	11⁄4	36
46	553⁄4	523⁄4	11⁄4	38
48	58	55	11⁄4	40

Diameter of Pipe.	Thickness of Flange.	Thickness of Pipe.		Weight per foot without Flange.	Weight of Flange and Bolts.
		Frac.	Dec.
2	5⁄8	3⁄8	.373	6.96	4.41
3	5⁄8	13⁄32	.396	11.16	5.93
4	11⁄16	7⁄16	.420	15.84	7.66
5	3⁄4	7⁄16	.443	21.00	9.63
6	3⁄4	15⁄32	.466	26.64	11.82
8	13⁄16	1⁄2	.511	39.36	16.91
10	7⁄8	9⁄16	.557	54.00	23.00
12	15⁄16	19⁄32	.603	70.56	30.13
14	1	21⁄32	.649	89.04	38.34
16	11⁄16	11⁄16	.695	109.44	47.70
18	11⁄8	3⁄4	.741	131.76	58.23
20	13⁄16	25⁄32	.787	156.00	70.00
22	11⁄4	27⁄32	.833	182.16	83.05
24	15⁄16	7⁄8	.879	210.24	97.42
26	13⁄8	15⁄16	.925	240.24	113.18
28	17⁄16	31⁄32	.971	272.16	130.35
30	19⁄16	1	1.017	306.00	149.00
32	15⁄8	11⁄16	1.063	341.76	169.17
34	111⁄16	11⁄8	1.109	379.44	190.90
36	13⁄4	15⁄32	1.155	419.04	214.26
38	113⁄16	13⁄16	1.201	460.56	239.27
40	17⁄8	11⁄4	1.247	504.00	266.00
42	115⁄16	15⁄16	1.293	549.36	294.49
44	2	111⁄32	1.339	596.64	324.78
46	21⁄16	13⁄8	1.385	645.84	356.94
48	21⁄8	17⁄16	1.431	696.96	391.00