🔧 4" ESPA ES4 12 Submersible Pump with Franklin Motor: complete borehole unit
Ready-to-install unit with 4" ESPA ES4 12 submersible hydraulic section and Franklin Electric motor. Designed to pump clean water from boreholes for domestic water supply, irrigation, agriculture and industry. Available in single-phase 230 V and three-phase 400 V versions, with power ratings from 2 to 7.5 hp.
✔ ES4 hydraulic section
- ✔ Body, suction, discharge and shaft: AISI 304 stainless steel
- ✔ Diffusers and impellers: floating, made of technopolymer
- ✔ Seals: NBR/EPDM
- ✔ Built-in check valve
- ✔ Coupling: NEMA MG1-18.388 standard
⚙️ Franklin motor
- ✔ 4" Franklin Electric motor, asynchronous, water-filled
- ✔ Construction: NSS motor in AISI 304 stainless steel
- ✔ Insulation class B; voltage tolerance +6% / -10%
- ✔ Starts: up to 20 per hour, spaced apart
- ✔ Vertical or horizontal installation; variable frequency drive compatible above 30 Hz
- ✔ NEMA 4" coupling; single-phase models include an external capacitor in the kit
📊 Technical Specifications by Model
| Model | Motor | Voltage | HP | kW | Hydraulic section length (mm) | Connection |
|---|---|---|---|---|---|---|
| ES4 12/07 | Franklin 4" 1.5 kW | 1x230V | 2 | 1,5 | 534 | 2" |
| ES4 12/07 | Franklin 4" 1.5 kW | 3x400V | 2 | 1,5 | 534 | 2" |
| ES4 12/10 | Franklin 4" 2.2 kW | 3x400V | 3 | 2,2 | 690 | 2" |
| ES4 12/14 | Franklin 4" 3 kW | 3x400V | 4 | 3 | 989 | 2" |
| ES4 12/19 | Franklin 4" 4 kW | 3x400V | 5,5 | 4 | 1195 | 2" |
| ES4 12/26 | Franklin 4" 5.5 kW | 3x400V | 7,5 | 5,5 | 1559 | 2" |
💧 Head (m) by Flow Rate (m³/h)
| Model | 0 | 6,0 | 8,4 | 10,8 | 13,2 | 15,6 |
|---|---|---|---|---|---|---|
| ES4 12/07 | 45 | 37 | 33 | 28 | 22 | 14 |
| ES4 12/10 | 64 | 54 | 48 | 41 | 32 | 20 |
| ES4 12/14 | 89 | 76 | 67 | 56 | 43 | 28 |
| ES4 12/19 | 120 | 102 | 91 | 76 | 58 | 37 |
| ES4 12/26 | 163 | 136 | 120 | 100 | 75 | 48 |
In the table, each column is a flow rate in m³/h, and the value is the head in meters.
📋 Operating Limits
- ✔ Maximum water temperature: 30 °C (motor limit)
- ✔ Maximum depth: 150 m (motor)
- ✔ Suspended sand: up to 100 g/m³
