Pipe Pressure Head Loss

The below table shows friction loss over 30 metres (or 100 feet) of Buteline PB-1 pipe:

Pressure / Head Loss Per 30 Metres (100 Feet) of Pipe
Minimum Flow Required		Type 18		Type 22		Type 28
L/min	Gallons/min	kPa	Bar	kPa	Bar	kPa	Bar
0.5	0.11	0.20	0.002	0.04	0.000	0.01	0.000
1	0.22	0.72	0.007	0.15	0.001	0.05	0.000
2	0.44	2.59	0.026	0.53	0.005	0.17	0.002
3	0.67	5.50	0.055	1.12	0.011	0.36	0.004
4	0.89	9.37	0.094	1.91	0.019	0.62	0.006
5	1.11	14.14	0.141	2.89	0.029	0.93	0.009
10	2.22	51.00	0.510	10.41	0.104	3.36	0.034
12	2.67	71.46	0.715	14.59	0.146	4.71	0.047
14	3.11	95.04	0.950	19.40	0.194	6.26	0.063
16	3.56	121.67	1.217	24.84	0.248	8.02	0.080
18	4.00	151.29	1.513	30.88	0.309	9.97	0.100
20	4.44	183.86	1.839	37.53	0.375	12.11	0.121
25	5.56	277.82	2.778	56.71	0.567	18.30	0.183
30	6.67	389.27	3.893	79.46	0.795	25.65	0.256
35	7.78	517.73	5.177	105.68	1.057	34.11	0.341
40	8.89	662.82	6.628	135.29	1.353	43.67	0.437
45	10.00	824.19	8.242	168.23	1.682	54.30	0.543