Water Flow Capacity by I.D. and Pressure

Flow in GPM through pipe I.D. in inches

Preasure P.S.I	1"	1 1/4"	1 1/2"	2"	2 1/2"	3"	4"
20	26	47	76	161	290	468	997
30	32	58	94	200	360	582	1240
40	38	68	110	234	421	680	1449
50	43	77	124	264	475	767	1635
60	47	85	137	291	524	846	1804
75	53	95	153	329	591	955	2035
100	62	112	180	384	690	1115	2377
125	70	126	203	433	779	1258	2681
150	77	139	224	478	859	1388	2958
200	90	162	262	558	1004	1621	3455