These pumps are much used in connection with hydraulic elevators by pumping directly into the elevator cylinders, as there is no pulsation. They are also used to pump oil into pipe lines and are driven by electric motors as well as by belts. For circulating pumps for brine and for fire purposes these pumps have certain peculiar advantages.
Table of Dimensions and Capacities of the Quimby Screw Pump.
| Size | Gallons Per Minute | Revolutions per Minute | PIPING | EXTREME DIMENSIONS | ||||
|---|---|---|---|---|---|---|---|---|
| Suction | Discharge from Valve Hood | Discharge | Width | Length | Height | |||
| 2 | 7-10 | 1200 | 11⁄4 | — | 1 | 9 | 27 | 11 |
| 21⁄2 | 15-20 | 1200 | 2 | — | 11⁄2 | 9 | 32 | 14 |
| 3 | 30-35 | 1200 | 21⁄2 | 21⁄2 | 21⁄2 | 10 | 38 | 16 |
| 31⁄2 | 70-85 | 1200 | 4 | 3 | 3 | 11 | 49 | 25 |
| 4 | 140-170 | 1200 | 4 | 3 | 4 | 13 | 54 | 28 |
| 5 | 200-245 | 1100 | 5 | 4 | 5 | 14 | 64 | 31 |
| 6 | 275-350 | 900 | 6 | 5 | 6 | 17 | 75 | 37 |
| 7 | 400-485 | 775 | 8 | 6 | 8 | 18 | 78 | 38 |
| 9 | 650-800 | 725 | 10 | 8 | 10 | 25 | 92 | 48 |
| 10 | 825-1000 | 575 | 12 | 10 | 12 | 32 | 98 | 60 |
| Dimensions in inches. | Weights in pounds. | |||||||
AERMOTOR
PUMPS
Fig. 459.