Both ranges are shown: DAB builds the same two hydraulics into the DTron 2 and the DTron 3, so the published curve is the same and the choice between them is the control, not the pump. The 45/90 makes more head at low flow; the 35/120 carries further out to 34 GPM.
Models
| Model |
Amps |
| DTRON3 35/120 |
8.8 |
| DTRON3 45/90 |
9.7 |
Every model is 0.9 HP (P2) at 115 V single phase. Maximum head and maximum flow are in the table below and its note. Source: DAB DTron 2 and DTron 3 US Specifications.
Find your model in the row, then read across. Total head is the lift from the water level to the highest fixture, plus the pressure you want there (2.31 ft for every PSI), plus friction in the pipe.
Total head in feet
| Model |
0 GPM (Shut-off) |
6 GPM |
16 GPM |
24 GPM |
26 GPM |
32 GPM (Max) |
| 35/120 |
125 ft |
117 ft |
85 ft |
52 ft |
41 ft |
8 ft |
| 45/90 |
134 ft |
132 ft |
79 ft |
25 ft |
12 ft |
— |
Head added in feet from the DAB 60 Hz performance table (DTron Technical Sheet USA, 2020), at the tabulated flows nearest 20%, 50% and 75% of the 32 GPM curve end, plus the 45/90’s last point. 0 GPM is the lower of DAB’s two printed figures: the US specification sheet, which our part numbers come from, gives 134 ft for the 45/90 (the technical sheet 147 ft); the technical sheet gives 125 ft for the 35/120 (the US sheet 146 ft). The US sheet gives maximum flow as 26 GPM on the 45/90 and 34 GPM on the 35/120; the technical sheet’s 35/120 curve ends at 32 GPM. Bold = the last point on that model’s curve, its max flow; — = beyond it. 1 PSI is 2.31 ft, so 40 PSI at the tap is 92 ft of the head above, and the lift from the pump to the fixture comes out of the same figure. Curve tolerance to ISO 9906. Ask us for the US 115 V curve before committing a duty point.
Output in GPM at 30 PSI at the outlet, by lift from the water level
| Model |
0 ft |
10 ft |
20 ft |
30 ft |
40 ft |
50 ft |
60 ft |
| 35/120 |
20 |
17.5 |
14.5 |
11.5 |
8.5 |
5 |
— |
| 45/90 |
17.5 |
16 |
14 |
12.5 |
11 |
9 |
6.5 |
Output in GPM at 50 PSI at the outlet, by lift from the water level
| Model |
0 ft |
10 ft |
20 ft |
30 ft |
40 ft |
50 ft |
60 ft |
| 35/120 |
6 |
— |
— |
— |
— |
— |
— |
| 45/90 |
9.5 |
7.5 |
— |
— |
— |
— |
— |
Calculated from DAB’s head-at-flow table (DTron Technical Sheet USA, 2020; the 45/90 is held to its 134 ft shut-off); DAB publishes no output table for this pump. Each cell is the flow where DAB’s curve meets the lift from the water level plus the pressure (30 PSI = 69 ft, 50 PSI = 116 ft), interpolated between DAB’s printed points and rounded down to 0.5 GPM. — = beyond DAB’s printed range or under 1 GPM. Pipe friction is not included.
Enter your water level, pipe run and pressure. The calculator shows which DAB pumps cover the duty, with the headroom on each.
