SECTION V
UL EX-4510 7-15-02 Page 5-27
REV. 1
List based on actual drill sizes and min/max allowable vs. ability to machine
Designer Program (Unbalanced)
Nozzle Range Manifold Orifice
Schedule 80 Schedule 40 Schedule 160 Schedule 80
UL UL UL UL UL UL UL UL
Size Min Max Min Max Min Max Min Max
___ ___ ____ ____ ___ ___ ____ ___ ____
0.25 Not allowed 0.042 0.250 – – – – – – – –
0.375 Not allowed 0.062 0.343 – – – – – – – –
0.5 0.063 0.375 0.073 0.375 0.062 0.250 0.073 0.296
0.75 0.086 0.515 0.096 0.562 0.081 0.332 0.096 0.406
1 0.110 0.656 0.125 0.718 0.106 0.437 0.125 0.515
1.25 0.147 0.890 0.159 0.953 0.152 0.625 0.166 0.703
1.5 0.173 1.046 0.185 1.125 0.177 0.734 0.196 0.812
2 0.228 1.343 0.238 1.437 0.221 0.921 0.257 1.000
2.5 0.272 1.626 0.290 1.728 0.277 1.156 0.302 1.265
3 0.339 2.030 0.358 2.148 0.343 1.437 0.377 1.595
4– – – – – – – – 0.453 1.891 0.500 2.104
Nozzle/Pressure Reduce Range Chart
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