Aquatic Ponds

Feet Of Head Pressure Loss Per 100 Ft. of Plastic Pipe
GPH	Pipe Diameter
	1/2"	3/4"	1"	1-1/4"	1-1/2"	2"	2-1/2"	3"	4"
60	2.08	0.51
120	4.16	1.02	0.55	0.14	0.07
300	23.44	5.73	1.72	0.44	0.22	0.066	0.038	0.015
420	43.06	10.52	3.17	0.81	0.38	0.11	0.051	0.021
600	82.02	20.04	6.02	1.55	0.72	0.21	0.09	0.03
900		42.46	12.77	3.28	1.53	0.45	0.19	0.07
1200		72.34	21.75	5.59	2.61	0.76	0.32	0.11	0.03
1500			32.88	8.45	3.95	1.15	0.49	0.17	0.04
1800			46.08	11.85	5.53	1.62	0.68	0.23	0.06
2100				15.76	7.36	2.15	0.91	0.31	0.08
2400				20.18	9.43	2.75	1.16	0.4	0.11
2700				25.1	11.73	3.43	1.44	0.5	0.13
3000				30.51	14.25	4.16	1.75	0.6	0.16
3600					19.98	5.84	2.46	0.85	0.22
4200						7.76	3.27	1.13	0.3
4500						8.82	3.71	1.28	0.34
4800						9.94	4.19	1.44	0.38
5400						12.37	5.21	1.8	0.47
6000						15.03	6.33	2.18	0.58
7500							9.58	3.31	0.88
9000							13.41	4.63	1.22
10500								6.16	1.63
12000								7.88	2.08
15000								11.93	3.15
18000									4.41
21000									5.87
24000									7.52
27000
30000
Friction Loss in PVC Fittings = EQUIVALENT FEET OF STRAIGHT PIPE
PVC	Pipe Size
Type	1/2"	3/4"	1"	1-1/4"	1-1/2"	2"	2-1/2"	3"	4"
90° elbow	1.5	2	2.25	4	4	6	8	8	12
45° elbow	0.75	1	1.4	1.75	2	2.5	3	4	5
insert coupling	0.5	0.75	1	1.25	1.5	2	3	3	4
gate valve	0.3	0.4	0.6	0.8	1	1.5	1.6	2	3
male/female adapter	1	1.5	2	2.75	3.5	4.5	5.5	6.5	9.5
tee-flow (run)	1	1.4	1.7	2.3	2.7	4.3	5.1	6.3	8.3
tee-flow (branch)	4	5	6	7	8	12	15	16	22