Available in 0.5 hp / 0.4 kW (GSP05), 1 hp / 0.75 kW (GSP10), and 2 hp / 1.5 kW (GSP20) models, the GSP Sub-Prime offers flow rates from 70 through 110 gpm (4.4 through 6.9 l/sec) and maximum heads from 39 to 70 feet (11.9 to 21.3 meters). The GSP Sub-Prime line is a selection of portable, electric submersible dewatering pumps available for a wide range of pumping applications on construction, industrial, mining, utility, and municipal job sites. Compact design allows these versatile units to go where other pumps simply would not fit. An optional piggy back single float switch can be supplied as a cost-effective choice for applications requiring automatic operation.
GSP20SL SlimLine Sub-Prime electric submersible pumps for dewatering applications feature a slim-line design ideal for fitting into caissons or other confined spaces. The 7.09' diameter pump with top discharge design fits into an 8' caisson. Available in single-phase or three-phase options.
| GSP05 |
GSP10 |
GSP20 |
|
| HP (kW) |
0.5 HP/0.4 kW |
1.0 HP/.75 kW | 2.0 HP/1.5 kW |
|
Max. Flow |
70 gpm (4.4 l/sec.) |
90 gpm (5.7 l/sec.) |
110 gpm (6.9 l/sec.) |
| Max. Head | 39' (11.9M) |
60' (18.3M) |
70' (21.3M) |
| Max. Solids |
1/3" (9mm) |
1/3" (9mm) |
1/3" (9mm) |
| Cable Length |
30' (9M) |
50' (15M) |
50' (15M) |
| Discharge Size | 2" (50mm) |
2" (50mm) |
3" (75mm) |
| RPM |
3600 |
3600 |
3600 |
| Max. Fluid Temp. |
90°F (32°C) | 90°F (32°C) | 104°F (40°C) |
| PH Range | 6.5-8.0 |
6.5-8.0 |
6.5-8.0 |
| Voltage | 115, 230 |
115, 230 |
115/230 |
| Amps | 5.8, 3.2 |
10.3, 5.11 |
25.9/13.0 |
| Phase | Single |
Single |
Single |
| Height | 12.8" (325mm) |
14.1" (358mm) | 24.5" (622mm) |
| Width |
7.2" (183mm) |
7.2" (183mm) |
9.25" (235mm) |
| Weight |
20 lbs. (9 kg.) |
29 lbs. (13 kg.) |
61 lbs. (28 kg.) |
| Max. Sub. |
16.5' (5M) |
16.5' (5M) |
16.5' (5M) |


Optional Float Switches available for automatic, remote activation of Sub-Prime pumps. Package consists of 30'/50' (9M/15M) power cord with piggy-back power plug, variable length float tether, and sealed float. Typical configuration shown in the following.
Pumping range determined by tether length according to the following guide.
| Tether Length |
3.5 89 |
5 127 |
7 178 |
9 229 |
11 279 |
13 330 |
15 (in.) 381 (mm) |
| Pumping Range |
6.5 165 |
7.5 191 |
8.5 216 |
10 254 |
11 279 |
12.5 318 |
13.5 (in.) 343 (mm) |
Pumping range based on operation in non-turbulent conditions. Actual range may vary due to temperature conditions and cord shape. Tether length increases variance of pumping range.

WARNING: Pumps are not designed for use in explosive atmosphere,
flammable environments or for pumping volatile liquids.
