Franklin TB15CI, TB1CI, TB2CI owner manual Appendix IV Friction Loss Tables, Pvc

APPENDIX IV - FRICTION LOSS TABLES

1”

Schedule 40 pipe 1.049 in. i.d. / Type L Copper tube 1.025 in. i.d.

		Friction Loss			Ft Hd./
GPM	Velocity	Ft Hd./100’ of pipe		Velocity	100’ Pipe
	Ft/S	Steel	PVC	Ft/S	Fric. Loss
		C=100	C=140		C=130
2.0	0.74	0.60	0.32	.078	0.41
3.0	1.11	1.26	0.68	1.17	0.87
4.0	1.49	2.14	1.15	1.56	1.48
5.0	1.86	3.24	1.75	1.95	2.23
6.0	2.23	4.54	2.45	2.34	3.13
8.0	2.97	7.73	4.16	3.11	5.35
10	3.71	11.7	6.31	3.89	8.08
12	4.46	16.4	8.85	4.67	11.3
14	5.20	21.8	11.8	5.45	15.0
16	5.94	27.9	15.1	6.22	19.2
18	6.68	34.7	18.7	7.00	23.9
20	7.43	42.1	22.8	7.78	29.0
25	9.29	63.6	34.6	9.74	43.9
30	11.1	89.2	48.1	11.7	61.4
40	14.9	152	82.0	15.5	105

1¼”

Schedule 40 pipe 1.380 in. i.d. / Type L Copper tube 1.265 in. i.d.

		Friction Loss			Ft Hd./
GPM	Velocity	Ft Hd./100’ of pipe		Velocity	100’ Pipe
	Ft/S	Steel	PVC	Ft /S	Fric. Loss
		C=100	C=140		C=130
4.0	0.86	0.56	0.30	1.02	0.52
6.0	1.29	1.20	0.65	1.53	1.12
8.0	1.72	2.04	1.10	2.04	1.92
10	2.15	3.08	1.67	2.55	2.90
12	2.57	4.31	2.33	3.06	4.04
14	2.00	5.73	3.10	3.57	5.35
16	3.43	7.34	3.96	4.08	6.85
18	3.86	9.13	4.93	4.59	8.52
20	4.29	11.1	6.00	5.10	10.4
25	5.36	16.8	9.06	6.38	15.7
30	6.43	23.5	12.7	7.65	22.1
40	8.58	40.0	21.6	10.2	37.6
50	10.7	60.4	32.6	12.8	56.7
60	12.9	84.7	45.6	15.3	79.5
80	17.2	144	77.9	20.4	136

1.5”

Schedule 40 pipe 1.610 in. i.d. / Type L Copper tube 1.505 in. i.d.

		Friction Loss			Ft Hd./
GPM	Velocity	Ft Hd./100’ of pipe		Velocity	100’ Pipe
	Ft/S	Steel	PVC	Ft/S	Fric. Loss
		C=100	C=140		C=130
6.0	0.95	0.57	0.31	1.08	0.49
8.0	1.26	0.96	0.52	1.44	0.82
10	1.58	1.45	0.79	1.80	1.24
12	1.89	2.04	1.10	2.16	1.73
15	2.36	2.95	1.59	2.70	2.62
20	3.15	5.24	2.83	3.60	4.46
25	3.94	7.90	4.26	4.51	6.74
30	4.73	11.1	6.00	5.41	9.44
40	6.30	18.9	10.2	7.21	16.1
50	7.88	28.5	15.4	9.01	24.3
60	9.46	40.0	21.6	10.8	34.1
70	11.0	53.2	28.7	12.6	45.5
80	12.6	68.1	36.8	14.4	58.1
90	14.2	84.7	45.7	16.2	72.1
100	15.8	103	56.6	18.0	87.7

2”

Schedule 40 pipe 2.067 in. i.d. / Type L Copper tube 1.985 in. i.d.

		Friction Loss			Ft Hd./
GPM	Velocity	Ft Hd./100’ of pipe		Velocity	100’ Pipe
	Ft/S	Steel	PVC	Ft/S	Fric. Loss
		C=100	C=140		C=130
10	0.96	0.43	0.23	1.07	0.35
15	1.44	0.92	0.50	1.60	.075
20	1.91	1.55	0.84	2.13	1.24
25	2.39	2.35	1.27	2.66	1.87
30	2.87	3.29	1.78	3.19	2.62
40	3.82	5.60	3.03	4.26	4.48
50	4.78	8.46	4.57	5.32	6.76
60	5.74	11.9	6.44	6.39	9.47
70	6.69	15.8	8.53	7.45	12.6
80	7.65	20.2	10.9	8.52	16.2
90	8.61	25.1	13.6	9.58	20.0
100	9.56	30.5	16.5	10.7	24.4
120	11.5	42.7	23.1	12.8	34.1
150	14.3	64.7	35.0	16.0	51.6
200	19.1	110	59.4	21.3	87.8

2.5”

Schedule 40 pipe 2.469 in. i.d. / Type L Copper tube 2.465 in. i.d.

GPM

	Friction Loss			Ft Hd./
Velocity	Ft Hd./100’ of pipe		Velocity	100’ Pipe
Ft/S	Steel	PVC	Ft /S	Fric. Loss
	C=100	C=140		C=130

20	1.21	0.66	0.35	1.34	0.40
30	2.01	1.39	0.75	2.02	0.85
40	2.68	2.36	1.27	2.69	1.46
50	3.35	3.56	1.92	3.36	2.20
60	4.02	4.99	2.69	4.03	3.08
70	4.69	6.64	3.58	4.70	4.11
80	5.36	8.50	4.59	5.37	5.25
90	6.03	10.6	5.72	6.04	6.52
100	6.70	12.8	6.90	6.71	7.94
110	7.37	15.3	8.22	7.38	9.44
130	8.71	20.9	11.3	8.73	12.9
150	10.0	27.3	14.7	10.1	16.8
200	13.4	46.3	25.0	13.4	28.6
250	16.8	81.7	44.1	16.8	43.4
300	20.1	98.1	52.9	20.1	61.1

Note: Chart shows friction loss per 100’ of pipe. To convert to friction loss per foot, move decimal point 2 places to the left.

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