DuoPEX Water – Water Pressure Loss

The DuoPEX Water Pipe and Fitting System is a revolutionary alternative for the professional plumber, makes any job quicker and easier.

The following tables show Pressure Loss for DuoPEX Water pipe at a fluid temperature of 10ºC.

Pipe Size	16 x 2.0		20 x 2.0		26 x 3.0		32 x 3.0
Flow Velocity V (m/s)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)
0.5	0.06	4.13	0.1	2.83	0.16	2.12	0.27	1.47
0.6	0.07	5.62	0.12	3.88	0.19	2.89	0.32	2.05
0.7	0.08	7.31	0.14	5.07	0.22	3.78	0.37	2.69
0.8	0.09	9.17	0.16	6.42	0.25	4.78	0.42	3.42
0.9	0.1	11.3	0.18	7.79	0.28	5.91	0.48	4.16
1	0.11	13.54	0.2	9.34	0.31	7.12	0.53	5.00
1.2	0.14	18.66	0.24	13.05	0.38	9.75	0.64	6.95
1.4	0.16	24.58	0.28	17.09	0.44	12.79	0.74	9.12
1.6	0.18	31.25	0.32	21.6	0.5	16.19	0.85	11.71
1.8	0.2	38.87	0.36	26.42	0.57	19.92	0.96	14.45
2	0.23	46.49	0.4	32.12	0.63	24.00	1.06	17.46
2.5	0.28	67.69	0.5	47.45	0.79	35.93	1.33	26.08
3	0.34	93.73	0.6	66.08	0.94	49.27	1.59	36.51
3.5	0.4	127.58	0.7	88.03	1.1	66.44	1.86	48.99
4	0.45	159.3	0.8	110.98	1.26	83.98	2.12	62.14
4.5	0.51	200.77	0.9	137.93	1.41	105.28	2.39	77.09
5	0.57	239.54	1.01	167.94	1.57	127.47	2.65	93.25

Pipe Size	40 x 3.5		50 x 4.0		63 x 4.5
Flow Velocity V (m/s)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)	Volumetric Flow V (L/s)	Pressure Loss R (mbar/m)
0.5	0.43	1.09	0.69	0.80	1.15	0.59
0.6	0.51	1.51	0.83	1.11	1.37	0.81
0.7	0.6	1.95	0.97	1.46	1.60	1.08
0.8	0.68	2.50	1.11	1.86	1.83	1.37
0.9	0.77	3.07	1.25	2.30	2.06	1.66
1	0.88	3.71	1.39	2.80	2.29	2.04
1.2	1.03	5.17	1.66	3.82	2.75	2.83
1.4	1.2	6.83	1.94	5.09	3.21	3.76
1.6	1.37	8.57	2.22	6.52	3.66	4.86
1.8	1.54	10.7	2.49	8.10	4.12	5.91
2	1.71	13.03	2.77	9.90	4.58	7.15
2.5	2.14	19.69	3.46	14.8	5.73	10.7
3	2.57	27.54	4.16	20.46	6.87	14.91
3.5	2.99	36.37	4.85	27.27	8.02	19.85
4	3.42	46.05	5.54	35.04	9.16	25.48
4.5	3.85	57.67	6.23	43.14	10.31	31.49
5	4.28	69.68	6.93	52.67	11.45	38.19