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"NSI" Series
NonStop Inline Drip Tubing
 

Benefits

  • Requires low-maintenance 30-mesh filer.
  • Most reliable product for clog-resistance .
  • Reduces costs associated with system maintenance.
  • Ideal for use in below ground installations.
  • Smooth profile virtually eliminates emitter snagging.
  • Factory insertion into tubing, wit emitters spaced to your specifications.

How it works
1. Under normal conditions, there is a slight pressure differential across each orifice in the silicone diaphragm.
 
2. As a particle encounters the orifice, there is a momentary obstruction, causing the differential pressure across the orifice to increase greatly.  This pushes the particle through the expanding orifice.

3. The particle is then flushed through the orifice, which instantly returns to its normal size.  Normal  pressure conditions are restored.  The particle continues through the remaining orifices in the diaphragm and out of the NonStop emitter.


 

NSI - 18mm Series  .695 in. O.D. (nominal)       .605 in. I.D. (nominal)
           Maximum number of emitters and lateral run
            +/- 5% allowable flow variation; level ground

Flow Rate GPM

Emitter Spacing (inches)
18 24 30 36 42
No. Len. (ft) No. Len. (ft) No. Len. (ft) No. Len. (ft) No. Len. (ft)
0.6 224 337 202 405 186 467 174 524 165 578
1.0 162 243 146 292 134 337 126 378 119 417
2.0 104 156 94 188 86 217 81 243 76 268

NSI - 20mm Series  .790 in. O.D. (nominal)       .690 in. I.D. (nominal)
           Maximum number of emitters and lateral run
            +/- 5% allowable flow variation; level ground

Flow Rate GPM

Emitter Spacing (inches)
18 24 30 36 42
No. Len. (ft) No. Len. (ft) No. Len. (ft) No. Len. (ft) No. Len. (ft)
0.6 282 423 254 508 234 586 219 658 207 725
1.0 203 305 183 367 169 423 158 475 149 524
2.0 130 196 118 236 108 272 101 305 96 337

 

 

 
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Copyright © 2000 Underhill International Corporation
Last modified: December 06, 2007