Filter and sort
What is the Water Pumps category and what is it for?
The “Water Pumps” category includes all equipment and components necessary to move water with the appropriate flow rate and manometric head in domestic, agricultural, and light industrial applications. It includes pressure pumps for stable internal supply, submersible pumps for wells/boreholes, surface pumps for tanks and transfers, and pool filters for recirculation and filtration. The range is completed with accessories (MPPT controllers, pressure tanks, filters, probes, DC protections) and official spare parts for long-term maintenance.
Advantages and limitations
- Energy efficiency: direct and hybrid solar solutions reduce consumption and allow off-grid operation.
- Wide hydraulic range: from low pressures for homes and marine use to high flow rates for irrigation or filtration.
- Safety and durability: suitable materials (stainless steel/technopolymers), IP protection, non-return valves, thermal protection, and dry-run control.
- Limitations to consider: water with solids requires filtration/settling; extreme heights require precise sizing; for pressure, include a pressure tank to minimize cycles.
Common applications
- Domestic supply with pressure sets (Shurflo, 12/24 V and 230 V).
- Water extraction in wells and boreholes with centrifugal or helical submersibles (Lorentz PS2/PU, Grundfos SQFlex, ZIRI, Acrosun).
- Transfers from tanks/ponds with surface pumps (Lorentz CS-F, ZIRI CPM/DCP/QB/SHF).
- Filtration and recirculation of pools with solar and hybrid filters (Lorentz PS2/PU, ZIRI XKP/FCP).
- Marine and camper: compact and silent 12/24 V solutions.
How to choose the right pump
- Define the operating point: flow rate (m³/h or L/min) and Total Manometric Head (TMH, m). TMH = geodetic height + friction losses (pipes, elbows, valves, and filters).
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Power source:
- Direct solar with MPPT controller/inverter (Lorentz PS2 already includes it; for PU you must add a compatible controller).
- DC 12/24 V for marine/camper or off-grid homes with batteries.
- 230 V AC when grid or generator is available and higher continuous flow rates are required.
- Hydraulic type: submersible (wells/high water columns), surface (tanks/transfers), or pressure set (stable internal network).
- Water quality: potable, with sediments, or brackish; select suitable materials (AISI 304/316, Viton/Santoprene elastomers) and filtration.
- Compatibility: check well diameter (3"–4"), hydraulic and electrical connections, and availability of spare parts.
Indicative specifications
| Typical flow rate | 0.4–78 m³/h depending on series (pressure/transfer/borehole/pool) |
| Manometric head | 8–450 m (helical for extreme heights) |
| Power supply | Direct solar MPPT, 12/24 V DC, 230 V AC |
| Hydraulic type | Centrifugal / Helical (screw) |
| Protections | Dry-run, thermal, non-return, IP according to installation |
| Key accessories | Pressure tank, pressure switch/press-control, level probes, suction filter, DC protections |
Best installation practices
- Size according to the actual operating point (not by catalog maximums). Check the flow-head curve of the model.
- Minimize losses: use pipes of suitable diameter, short runs, and as few elbows as possible.
- Install a foot valve and suction filter (surface pumps) and a non-return valve on the discharge side.
- Protect against dry running with probes/press-control; for solar, coordinate PV power, MPPT controller, and motor limits.
- For pressure, add a pressure tank to reduce cycles and noise; adjust the pressure switch.
- Maintenance plan: clean filters, check electrical connections, and periodically inspect seals.
Comparisons and related collections
For internal supply and showers, see Pressure Pumps. If you need to lift from a deep well, choose Submersibles. For transfers from tanks or nearby irrigation, Surface Pumps simplify the service. If your goal is water recirculation in the pool, visit Pool Filters. Complete the installation with Accessories (Lorentz PS2/CU200 controllers, Ibaiondo pressure tanks, PV protections, and probes) and ensure long-term support with Spare Parts.
Technical note: in Lorentz systems, the PS2 ranges (submersible and surface) are supplied with an integrated controller in the kit; the PU series are pump units (Pump Unit) that do not include a controller and require adding the compatible model for correct operation.
