Appendix; Max. Distribution Pipe Length - Netafim SPINNET Handbook

APPENDIX

Max. distribution pipe length with 10% flow variation
The data in the tables below is for demonstration and initial impression. In order to determine the
maximum distribution pipe length while maintaining a flow rate variation of no more than 10%, under
actual conditions, it is very important to consult the irrigation/hydraulic designer.
Flow rate: 25 l/h
PE pipe 12 mm, ID: 9.8 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 16 mm, ID: 13.2 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 20 mm, ID: 17.0 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 25 mm, ID: 21.2 mm
Uphill 1%
Flat terrain 0
Downhill -1%
Flow rate: 40 l/h
PE pipe 16 mm, ID: 13.2 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 20 mm, ID: 17.0 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 25 mm, ID: 21.2 mm
Uphill 1%
Flat terrain 0
Downhill -1%
PE pipe 32 mm, ID: 27.2 mm
Uphill 1%
Flat terrain 0
Downhill -1%
42 UPSIDE-DOWN MICRO-EMITTERS HANDBOOK
, pressure at the micro-sprinkler/emitter head: 5.0 bar
2.0 2.2 2.4
52 55 58
52 55 60
54 57 60
84 90 94
86 92 98
90 95 101
128 134 142
134 141 149
138 147 156
180 191 202
194 207 218
206 220 233
, pressure at the micro-sprinkler/emitter head: 4.0 bar
1.0 1.2 1.4
29 34 36
30 34 38
30 34 38
45 50 55
46 52 56
47 53 57
64 72 78
66 74 83
68 77 85
96 108 118
101 114 126
106 120 133
Distance between emitters (m)
2.6 2.8 3.0
Max. distribution pipe length (m)
62 64 66
62 64 69
65 67 69
99 104 108
104 109 114
107 112 117
148 157 162
159 165 174
166 174 183
211 221 231
229 241 252
247 258 270
Distance between emitters (m)
1.6 1.8 2.0
Max. distribution pipe length (m)
40 43 46
40 43 46
42 45 48
59 65 68
62 67 72
64 68 74
86 92 98
90 97 104
93 101 108
128 137 146
138 148 158
146 157 168
3.2 3.4 3.6
70 71 76
70 75 76
74 75 79
112 116 122
118 122 126
122 126 133
170 177 180
179 187 194
189 197 205
240 248 256
262 272 284
285 296 306
2.2 2.4 2.6
48 50 55
51 53 55
51 53 57
73 77 81
77 79 86
79 84 88
103 110 114
110 118 122
114 122 130
154 163 172
167 178 187
180 192 203
3.8 4.0
76 80
80 84
84 84
125 128
133 136
137 140
186 192
201 208
213 220
262 272
293 304
319 332
2.8 3.0
56 60
59 60
59 63
84 90
90 93
92 96
120 126
129 135
134 141
179 186
196 204
213 222