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4300 Catalog
General Technical
U17
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Dimensions and pressures for reference only, subject to change.
Table U13 — Recommended Flow Diameters, in Inches
Recommended Flow Diameters – In Inches
Maximum
Flow Rate
GPM
Recommended Flow Diameter
in Inches
Pressure
Lines
Return
Lines
Suction
Lines
0.25
0.064
0.101
0.160
0.50
0.091
0.143
0.226
0.75
0.111
0.175
0.277
1.00
0.128
0.202
0.320
1.25
0.143
0.226
0.358
1.50
0.157
0.247
0.392
1.75
0.169
0.267
0.423
2.00
0.181
0.286
0.453
2.50
0.202
0.319
0.506
3.00
0.222
0.350
0.554
3.50
0.239
0.378
0.599
4.00
0.256
0.404
0.640
4.50
0.272
0.429
0.679
5.00
0.286
0.452
0.716
5.50
0.300
0.474
0.750
6.00
0.314
0.495
0.784
6.50
0.326
0.515
0.816
7.00
0.339
0.534
0.847
7.50
0.351
0.553
0.876
8.00
0.362
0.571
0.905
8.50
0.373
0.589
0.933
9.00
0.384
0.606
0.960
9.50
0.395
0.623
0.986
10.00
0.405
0.639
1.012
11.00
0.425
0.670
1.061
12.00
0.443
0.700
1.109
13.00
0.462
0.728
1.154
14.00
0.479
0.756
1.197
15.00
0.496
0.782
1.239
16.00
0.512
0.808
1.280
17.00
0.528
0.833
1.319
18.00
0.543
0.857
1.358
19.00
0.558
0.880
1.395
20.00
0.572
0.903
1.431
22.00
0.600
0.947
1.501
24.00
0.627
0.990
1.568
26.00
0.653
1.030
1.632
28.00
0.677
1.069
1.693
30.00
0.701
1.106
1.753
32.00
0.724
1.143
1.810
34.00
0.746
1.178
1.866
36.00
0.768
1.212
1.920
38.00
0.789
1.245
1.973
40.00
0.810
1.278
2.024
42.00
0.830
1.309
2.074
44.00
0.849
1.340
2.123
46.00
0.868
1.370
2.170
48.00
0.887
1.399
2.217
50.00
0.905
1.428
2.263
55.00
0.949
1.498
2.373
60.00
0.991
1.565
2.479
Maximum
Flow Rate
GPM
Recommended Flow Diameter
in Inches
Pressure
Lines
Return
Lines
Suction
Lines
65.00
1.032
1.629
2.580
70.00
1.071
1.690
2.677
75.00
1.109
1.749
2.771
80.00
1.145
1.807
2.862
85.00
1.180
1.862
2.950
90.00
1.214
1.916
3.036
95.00
1.248
1.969
3.119
100.00
1.280
2.020
3.200
110.00
1.342
2.119
3.356
120.00
1.402
2.213
3.505
130.00
1.459
2.303
3.649
140.00
1.515
2.390
3.786
150.00
1.568
2.474
3.919
160.00
1.619
2.555
4.048
170.00
1.669
2.634
4.172
180.00
1.717
2.710
4.293
190.00
1.764
2.784
4.411
200.00
1.810
2.857
4.525