| Close Piping (CHW) |
Pipe Size |
Open Piping (CDW) |
| GPM |
TR |
mm dia |
GPM |
TR |
| 4GPM | 1.7TR | ø20 | — | — |
| 8GPM | 3.3TR | ø25 | 6GPM | 1.5TR |
| 16GPM | 6.7TR | ø32 | 12GPM | 3.0TR |
| 25GPM | 10.4TR | ø40 | 18GPM | 4.5TR |
| 50GPM | 20.8TR | ø50 | 38GPM | 9.5TR |
| 80GPM | 33.3TR | ø65 | 70GPM | 17.5TR |
| 150GPM | 62.5TR | ø80 | 120GPM | 30.0TR |
| 300GPM | 125TR | ø100 | 230GPM | 57.5TR |
| 480GPM | 200TR | ø125 | 420GPM | 105TR |
| 700GPM | 292TR | ø150 | 625GPM | 156TR |
| 1300GPM | 542TR | ø200 | 1250GPM | 313TR |
| 1900GPM | 792TR | ø250 | 1900GPM | 475TR |
| 2800GPM | 1167TR | ø300 | 2800GPM | 700TR |
| 3400GPM | 1417TR | ø350 | 3400GPM | 850TR |
| 4400GPM | 1833TR | ø400 | 4500GPM | 1125TR |
| 5600GPM | 2333TR | ø450 | 5700GPM | 1425TR |
| 7000GPM | 2917TR | ø500 | 7000GPM | 1750TR |
| 10000GPM | 4167TR | ø600 | 10000GPM | 2500TR |