Full Range Submersible Groundwater Pump Stainless Steel Borehole Water Pump
1. Product Overview
Submersible borehole pumps are specially designed for groundwater extraction, covering full size from compact 3-inch residential models to heavy-duty 10-inch industrial units. Four complete product lines: fixed-speed industrial pump, permanent magnet VFD pump, 3-inch compact pump, solar off-grid pump.
All units adopt full stainless steel multi-stage hydraulic design, SiC hard mechanical seal & IP68 full submersible protection. Built-in dry run, overheat & overload triple motor protection. Three corrosion-resistant stainless grades (304/316/904L) for regular & low chloride groundwater. Support vertical borehole mounting or horizontal tank installation. Matched with CU pressure controller, CUE frequency drive & solar power kits, widely applied in municipal waterworks, agricultural irrigation, industrial water intake, villa domestic supply, off-grid solar water extraction & foundation dewatering.
Four Product Lines Comparison Table
Comparison Dimension | Fixed-Speed Industrial Deep Well Pump | Permanent Magnet Variable-Frequency Industrial Pump | 3" Compact Deep Well Pump | Solar AC/DC Pump |
|---|---|---|---|---|
Applicable Borehole Diameter | 6/8/10 inch large boreholes | 6/8/10 inch large boreholes | Minimum 3-inch narrow borehole | 3/4 inch borehole |
Motor Type | Asynchronous fixed-speed motor | Permanent magnet synchronous variable-frequency motor | SQ fixed speed / SQE built-in VFD | Built-in AC/DC inverter motor |
Power Range | 4~45kW | 4~45kW | 0.37~3kW | Small low power |
Maximum Head | 226 m | 250 m | 106 m | 70 m |
Maximum Flow Rate | 1530 m³/h | 1530 m³/h | 9 m³/h | 18 m³/h |
Standard Material | AISI304, optional 316/904L | AISI304, upgraded corrosion-resistant stainless steel | Standard AISI304 | AISI304 |
Power Supply Mode | 3-phase 380V mains frequency | 3-phase + dedicated CUE VFD | Single-phase 220V domestic | DC30~300V solar / AC universal |
Core Advantages | High flow, stable and durable | Class 1 energy efficiency, long-term power saving | Suitable for narrow boreholes; SQE constant pressure water supply | Off-grid outdoor solar water extraction |
Typical Application Scenarios | Municipal waterworks, large-scale farmland | Long-term industrial water intake, energy-saving renovation | Villas, homestays, small farms | Off-grid mountain farms, outdoor camps |
General Universal Technical Specs
Category | Item | Standard Parameter |
|---|---|---|
Submersion Grade | Water Protection | IP68 fully sealed submersible |
Wetted Material | Casing & Impeller | 304 / 316 / 904L stainless optional |
Mechanical Seal | Shaft Seal Material | Silicon Carbide double face seal |
Liquid Medium | Transport Fluid | Clean water without hard sediment, low corrosive groundwater |
Liquid Temp Range | 0℃ ~ +60℃ | |
Sand Tolerance | Max sand content ≤150ppm | |
Installation | Mount Mode | Vertical borehole / horizontal tank mounting |
Built-In Safety | Dry run, overheat, overload triple protection | |
Standard Compliance | ISO9906 hydraulic, CE & ACS drinking water certified |
Optional Control & Accessories List
Model | Accessory Name | Function Description |
|---|---|---|
CU301/CU302 | Constant Pressure Controller | Stable water pressure, eliminate fluctuation |
CUE | SPE dedicated VFD Driver | Stepless speed regulation for industrial energy saving |
Pressure Tank | Water buffer tank | Reduce frequent pump start-stop |
SQFlex Solar Kit | Solar panel & controller | Off-grid water supply without mains power |
Submersible Cable | Waterproof borehole cable | Long-distance underwater power supply |
Sand Screen | Inlet strainer | Block sediment to protect impeller |
2 Eight Core Product Advantages
Full Stainless Hydraulic Anti-Corrosion Sand Resistant Casing, impeller & all wetted parts stainless steel with three corrosion grades. SiC hard seal withstand sandy groundwater, no rust & blockage, pass ACS drinking water certification.
IP68 Full Submersible Low Noise Operation Fully submerged water cooling motor without cooling fan, ultra quiet. Complete seal prevent sediment & moisture entering motor for long-term borehole operation.
Triple Built-In Motor Safety Protection Factory integrated dry run, overheat & overload auto shutdown, avoid motor burnout and reduce site maintenance failure.
Full-Size Coverage For All Projects Mini 3-inch SQ for private villa wells, large 6~10 inch SP/SPE for thousand-ton water plants, solar version for remote off-grid areas, one brand cover all groundwater demands.
SPE PM VFD Top Energy Efficiency Permanent magnet motor matched original CUE drive, high MEI rating, save over 25% electricity vs conventional fixed pumps, great ROI for large water plants.
SQE Built-In VFD For Domestic Constant Pressure Integrated variable frequency inside pump body, cooperate with CU controller to maintain stable pressure with multiple taps open, improve villa water comfort.
SQFlex Dual AC/DC Solar Design Built-in inverter accept 30~300VDC solar panel input, no extra converter required for mountain farms & outdoor sites without power grid.
Dual Mount Flexible For Renovation Vertical bore installation as standard, horizontal tank mounting also available for old cistern renovation without new drilling.
3 Four Lines Application Scenarios
Fixed-Speed Industrial Pump: Municipal water treatment plant, large-scale farm irrigation, factory industrial groundwater extraction, foundation continuous dewatering;
PM Variable Pump: High water consumption factory, old water plant energy renovation, 24/7 continuous water supply projects;
3" Compact Pump: Single villa, countryside homestay, small farm domestic water, landscape water supply;
Solar Pump: Remote mountain farms, outdoor camps, off-grid irrigation, forest fire water intake.
4 Standard Installation Guidelines
1 Bore Matching: Require min 6" bore, SQ/SQE fit standard 3" bore;
2 Pre-Filter: Install sand strainer at pump inlet to prevent sediment abrasion on impeller;
3 Liquid Level: Pump fully submerged with min 1m water depth, no dry running allowed;
4 Electrical: Fixed pump equip overload breaker, SQE/SPE match original CU/CUE controller;
5 Material Selection: Regular groundwater AISI304, low chloride well AISI316, seawater high-corrosion use 904L.
5 Routine Maintenance Guide
1 Quarterly Inspection: Lift pump to clean blocked inlet screen;
2 Annual Test: Measure motor insulation, check cable crack & water penetration;
3 Long Shutdown: Run pump 5 minutes every 30 days to avoid scale jam impeller;
4 VFD Model: Calibrate pressure controller regularly to reduce frequent startup.
