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Lorentz PU1800 C-SJ12-4 Submersible Solar Pump 20m³/h 18m Centrifugal

Modelo: 10-012140 PU1800 C-SJ12-4, Rp2", UL

Sku: LOREBOM046
Vendor: Lorentz

€1.734,64 EUR

€1.387,71 EUR

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Lorentz PU1800 C-SJ12-4 Submersible Solar Pump for 4" wells. AISI 304 centrifugal hydraulics with check valve and 20 m³/h at 18 m. PU version: controller not included.

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Specifications

Product Description

The Lorentz PU1800 C-SJ12-4 Submersible Solar Pump is a professional pump unit designed to move large volumes of water at moderate heights in 4" boreholes. It combines the centrifugal hydraulic body PE C-SJ12-4, made of AISI 304 stainless steel and featuring an integrated check valve, with a high-efficiency, low-maintenance ECDRIVE submersible motor. With a performance of up to 20 m³/h and 18 m head, it is a robust and modular solution for irrigation, tank filling, and water transfer in installations powered by photovoltaic energy. This version is PU (does not include controller), intended for integration with Lorentz controllers that provide MPPT, protections, and automation via probes and float switches.

Main Features

Maximum flow rate 20 m³/h and maximum head 18 m in 4" wells.
Centrifugal PE C-SJ12-4 hydraulics with integrated check valve.
ECDRIVE 1200/1800-C motor, brushless, IP68, water-lubricated; nominal power approx. 1.7 kW.
Construction in AISI 304 stainless steel for maximum durability in clean water.
Lorentz modular architecture: fast service, original spare parts, and silent operation.
PU version: without controller, prepared for external MPPT control.

Advantages or Benefits

High flow rate with moderate pressure for rapid tank filling and gravity or low-pressure irrigation.
Long service life thanks to stainless materials and brushless motor (low maintenance).
Integrated check valve prevents backflow and protects the water column.
Scalability: by adding a Lorentz controller, MPPT, protections, and level control are enabled.
Simple integration into new solar systems or as a replacement for the existing pump unit.

Purpose or Applications

Recommended for agriculture and livestock, transfers between tanks, pond refilling, and supply on farms. Its best performance is achieved when prioritizing flow rate with pumping heights up to 18 m in 4" boreholes, both in off-grid systems and in hybrid configurations with grid or generator support.

Technical Specifications

Model	Lorentz PU1800 C-SJ12-4
Type	Pump unit (PU) without controller
Hydraulics	Centrifugal PE C-SJ12-4 with check valve
Maximum flow / head	20 m³/h / 18 m
Motor	ECDRIVE 1200/1800-C, brushless, IP68, water-lubricated
Nominal motor power	≈ 1.7 kW
Materials in contact	AISI 304 stainless steel
Minimum well diameter	4"
Water temperature	≤ 50 °C (clean water)
Maximum immersion	Up to 150 m (depending on installation)
Unit weight	≈ 13 kg (motor ≈ 7 kg + hydraulics ≈ 6 kg)

Compatibilities

This unit does not include a controller. It is compatible with Lorentz controllers from the PS2-1800 family (add MPPT, protections, inputs for well probe and float switches). When pairing with PS2-1800, size the PV generator for aggregate Vmp > 102 V, total Voc ≤ 200 V DC, and an Isc within the controller's admissible range. Use Lorentz accessories and spare parts from the C-SJ series and ECDRIVE motors.

The Lorentz PU1800 C-SJ12-4 provides high flow, efficiency, and reliability with a modular design that simplifies installation and maintenance in professional submersible solar pump systems.