Find your horsepower in the row. Total head is the depth to the pumping water level, plus 2.31 ft for every PSI you want at the tank, plus drop-pipe friction. The two output tables below do that sum for a 30/50 PSI pressure switch.
Total head in feet, by flow
| HP |
0 GPM (Shut-off) |
3 GPM |
7 GPM |
11 GPM |
14 GPM (Max) |
| 0.5 HP |
241 ft |
229 ft |
192 ft |
146 ft |
86 ft |
| 0.75 HP |
301 ft |
286 ft |
245 ft |
176 ft |
100 ft |
| 1 HP |
413 ft |
392 ft |
332 ft |
245 ft |
140 ft |
| 1.5 HP |
576 ft |
532 ft |
452 ft |
316 ft |
180 ft |
DAB prints flow at each depth and discharge pressure rather than a head-at-flow table (S4 Technical Sheet 60191756, p. 8). Each head here is the highest total head, depth plus DAB’s own foot equivalent of the pressure, at which DAB prints at least that flow, so it never claims more than DAB’s grid. 0 GPM is DAB’s printed shut-off; 14 GPM is the highest flow DAB prints.
Output in GPM at 30 PSI (switch cut-in), by depth to pumping water
| HP |
60 ft |
80 ft |
100 ft |
120 ft |
140 ft |
160 ft |
200 ft |
| 0.5 HP |
11 |
10 |
9 |
7 |
5 |
3 |
— |
| 0.75 HP |
13 |
12 |
11 |
10 |
9 |
8 |
6 |
| 1 HP |
— |
— |
13 |
13 |
12 |
11 |
10 |
| 1.5 HP |
— |
— |
— |
— |
13 |
13 |
12 |
Output in GPM at 50 PSI (switch cut-out), by depth to pumping water
| HP |
60 ft |
80 ft |
100 ft |
120 ft |
140 ft |
160 ft |
200 ft |
| 0.5 HP |
8 |
6 |
4 |
— |
— |
— |
— |
| 0.75 HP |
11 |
9 |
8 |
7 |
6 |
3 |
— |
| 1 HP |
13 |
12 |
11 |
11 |
10 |
9 |
7 |
| 1.5 HP |
— |
— |
13 |
13 |
12 |
12 |
11 |
As printed in the DAB S4 Technical Sheet (60191756), p. 8, at the 30 and 50 PSI rows. DAB’s figures exclude drop-pipe friction and are for a pump without check valve. — = DAB prints no figure there.
3-Wire control box by horsepower (ordered separately; 2-Wire builds need none)
| HP |
Voltage |
DAB 4CBUS control box |
| 0.5 HP |
115V 1Ph |
60174729 |
| 0.5 HP |
230V 1Ph |
60174730 |
| 0.75 HP |
230V 1Ph |
60174731 |
| 1 HP |
230V 1Ph |
60174732 |
| 1.5 HP |
230V 1Ph |
60174733 (Basic) or 60174737 (Plus, adds a line contactor) |
Enter your water level, pipe run and pressure. The calculator shows which DAB pumps cover the duty, with the headroom on each.