DAB · 4 in Submersible Well Pump
S4 — 20 GPM
Multi-impeller 4 in borehole pump with a water-filled DAB Tesla motor, 20 GPM nominal, supplied complete in 2-wire or 3-wire form.
20 GPM Nominal
4 in Well Minimum
Sand Resistant
1-1/4 in NPT
NSF/ANSI 61 Pump End
Overview
DAB S4 4 in multi-impeller borehole pumps are designed for clean water applications. They are engineered to boost water pressure, cater to gardening and irrigation needs, and lift water from boreholes in residential and commercial buildings. They are also well-suited for agricultural irrigation systems.
To ensure optimal performance, the S4 pumps must be installed in wells with a minimum diameter of 4 in. Alternatively, they can be installed in tanks or cisterns. These pumps effectively increase water pressure, making them perfect for watering medium to large gardens or, in the case of models with higher flow and head capabilities, for agricultural irrigation systems.
This listing covers the complete pump with motor. 2-Wire units pair the pump end with a water-filled 4TW motor that operates on a two-wire system and needs no external control box. 3-Wire units pair it with a 4GG motor on a three-wire system, which uses a separate control box and offers enhanced control and versatility. A pump-end-only version is listed separately.
Genuine DAB equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
Performance — Will It Do What You Need?
Every model in this listing is a 20 GPM nominal pump. Choose horsepower by the head you need: the table gives the maximum flow and the maximum head DAB publishes for each stage count.
| Model |
HP |
Max Flow |
Max Head |
| S4 20/07 |
0.75 |
30 GPM |
196 ft |
| S4 20/10 |
1 |
30 GPM |
263 ft |
| S4 20/15 |
1.5 |
30 GPM |
321 ft |
Maximum head is at zero flow — the ceiling, not a working point. Size to the published curve.
Models, Voltage & Phase
| Model |
HP |
Voltage & Phase |
Motor |
Max Flow / Head |
Amps |
Part No. |
| S4 20/07 |
0.75 |
230V 1Ph |
2-Wire 4TW |
30 GPM / 196 ft |
6.3 |
60198652 |
| S4 20/07 |
0.75 |
230V 1Ph |
3-Wire 4GG |
30 GPM / 196 ft |
7.4 |
60198675 |
| S4 20/10 |
1 |
230V 1Ph |
2-Wire 4TW |
30 GPM / 263 ft |
7.7 |
60198653 |
| S4 20/10 |
1 |
230V 1Ph |
3-Wire 4GG |
30 GPM / 263 ft |
8 |
60198676 |
| S4 20/15 |
1.5 |
230V 1Ph |
2-Wire 4TW |
30 GPM / 321 ft |
11.8 |
60198654 |
| S4 20/15 |
1.5 |
230V 1Ph |
3-Wire 4GG |
30 GPM / 321 ft |
10 |
60198677 |
Where two voltages are shown, the first is the factory wiring setting. Voltage is changed on the motor terminal board, never at the pressure switch. All models are single phase unless the table states 3Ph.
Key Features
-
Sand resistant — technopolymer impellers with stainless steel adjustment rings handle up to 5.42 lb/in³ of sand.
-
Stainless hydraulics — liner, shaft, coupling, suction filter and cable guard in stainless steel.
-
Water-filled Tesla motor — thrust bearing and bushes cooled and lubricated with a water and glycol mixture.
-
VFD ready — motor suitable for variable frequency drive operation from 30 Hz to 60 Hz.
-
Removable cable connector — CSA approved for easy maintenance.
Specifications
| Specification |
Value |
| Nominal flow |
20 GPM |
| Output connection |
1-1/4 in NPT |
| Maximum immersion depth |
984 ft (4GG / 4TW) |
| Pump maximum diameter |
3.9 in |
| Impeller material |
Technopolymer |
| Liquid temperature |
32 F to 104 F |
| Sand quantity |
5.42 lb/in³ |
| Maximum starts |
20 per hour |
| Protection class |
IP68 |
| Motor insulation class |
F |
| Power supply |
1x115 V or 1x230 V 60 Hz |
| Installation |
Fixed vertical; horizontal possible with a cooling sleeve |
| Certification |
Pump end NSF61; 4TW motor CSA approved |
Applications
- Residential and commercial water supply from boreholes
- Pressure boosting
- Garden and agricultural irrigation
- Tank and cistern installations
Before You OrderConfirm horsepower, voltage and 2-wire or 3-wire motor against your control setup. 3-wire units require a separate control box (see the DAB Tesla Control Box listing). 115 V is offered on 0.5 HP only.
