DC Solar Jet Self-Priming Pump — LSGJ / LSZ Series

Self-priming solar jet pump engineered to provide reliable suction, pressure boosting and water transfer without dependable grid electricity. Its strong priming capability and multiple flow options make it suitable for household supply, farm irrigation and remote projects drawing water from tanks, ponds or shallow wells.

Applications

Solar water transfer and irrigation where self-priming is required.

Operating Conditions

Surface installation; maximum suction is 8 m.

Motor / System Information

Brushless DC solar self-priming pump system.

Spu : SOL-JET

Overview

Overview

Product Information

Product Name	DC Solar Jet Self-Priming Pump — LSGJ / LSZ Series
Series	LSGJ / LSZ
Voltage	72–280V DC; best input 60–490V
Power	600–2000 W
Flow	3.1–38 m³/h
Head	15–40 m
Outlet	1×1 to 3×3 in
Maximum suction	8 m
Model Options	LSGJ3.1/35, LSGJ3.1/40, LSZ11/15, LSZ12/18, LSZ16/27 and LSZ38/25.

DC SOLAR JET SELF-PRIMING PUMP

Model	DC Volt	Best Input Voltage Voc	Power	Max.Flow	Max.Head	Max.Suction	Outlet
Model	(V)	(V)	(W)	(m³/h)	(m)	(m)	(inch)
LSGJ3.1/35-72/600	fz	60-150	600	oul	30	8	ee
LSGJ3.1/40-96/750	96	60-200	750	=	40	8	1"X1"
LSZ38/25-280/2200	280	100-490	2000	38	25	8	3 KO

Detail / Structure Image

Solar Pump_2_1x1_full.png

Key Features

DC Direct Drive Technology: Operates directly on DC power (typically compatible with standard solar panel voltages), removing the need for expensive and failure-prone inverters.

Automatic Self-Priming: Capable of lifting water from depths up to 8-9 meters automatically. The jet ejector system creates a vacuum to draw water up, simplifying installation.

High-Efficiency Permanent Magnet Motor: Utilizes rare-earth permanent magnets to deliver higher efficiency and torque density. This ensures the pump can start under load and operate efficiently at partial power.

Intelligent Protection System: Equipped with built-in controllers that offer protection against dry running, over-voltage, under-voltage, and overheating, ensuring the longevity of the unit.

Corrosion-Resistant Construction: The pump body and impeller are designed using durable materials (Stainless Steel/Cast Iron) to resist rust and chemical corrosion, suitable for various water qualities.

MPPT Integration (Optional/Model Dependent): Advanced models may include Maximum Power Point Tracking to optimize solar energy harvesting throughout the day, maximizing water output.

Technical Advantages

1. Zero Operational Energy Costs
The most significant commercial advantage of the DC Solar Jet Self-Priming Pump is the elimination of electricity bills. By harnessing free solar energy, the operational expenditure (OPEX) is virtually zero. For agricultural projects or remote industrial sites where grid extension is costly or impossible, this pump offers an immediate return on investment (ROI).

2. Simplified System Architecture
Traditional solar pumping often requires a complex setup of panels, inverters, and AC pumps. The LSGJ/LSZ series simplifies this. Being a DC pump, it connects directly to the solar array (often with a simple controller). Fewer components mean fewer points of failure, lower installation labor costs, and reduced maintenance overhead for the end-user.

3. Superior Energy Efficiency
DC permanent magnet motors are inherently more efficient than AC induction motors. They convert a higher percentage of electrical energy into mechanical energy. This efficiency means you can achieve the same water output with fewer solar panels compared to an AC system, reducing the initial capital expenditure (CAPEX) on the photovoltaic side.

4. Reliability in Off-Grid Scenarios
Water demand often peaks during sunny days (for irrigation or livestock). This pump’s output naturally correlates with solar availability—pumping more water when the sun is strongest. When paired with a storage tank, it provides a completely passive, automated water supply system that requires no human intervention.

5. Environmental Sustainability
For projects requiring "Green" certification or government subsidies for renewable energy, this pump is an ideal fit. It produces no noise pollution and zero carbon emissions during operation, aligning with global sustainability goals.

FAQ

Q1: Can this pump run at night or on cloudy days?
A: The DC pump runs directly on solar power. On cloudy days, it will run at a reduced speed, pumping less water. To run at night, you would need to integrate a battery bank (for DC storage) or switch to a hybrid system. However, for irrigation, we typically recommend pumping into a storage tank during the day for use at night.

Q2: What is the maximum suction depth?
A: The LSGJ/LSZ series is a self-priming jet pump. The theoretical maximum suction lift is about 9-10 meters due to atmospheric pressure limits. However, for optimal performance and longevity, we recommend installing the pump as close to the water level as possible (within 6-8 meters).

Q3: Do I need a controller for this pump?
A: Yes, a solar pump controller is highly recommended (and often included or sold as a matched set). The controller protects the pump from dry running (running without water), over-voltage, and helps manage the power input from the solar panels to ensure stable operation.

Q4: How does the self-priming function work?
A: Before the first start, you must fill the pump casing and suction pipe with water (priming). Once started, the jet mechanism creates a vacuum that evacuates air from the suction pipe, allowing the pump to lift water from the source. If the pump stops but the check valve holds, it usually retains its prime for the next start.

Q5: Can I use this pump with an AC generator if there is no sun?
A: Generally, DC pumps are designed specifically for DC input. Connecting them directly to an AC generator requires a rectifier or a specific DC power supply. If you need a pump that switches between AC and DC, please look for our "Hybrid Solar Pump" series instead.

1-Year Standard Factory Warranty

All our pumps enjoy a 1-year warranty against manufacturing defects. Free spare parts will be provided for quality issues within the warranty period. Damage caused by improper operation or human error is not covered.

24h Instant Remote Technical Assistance

Our professional technical team offers online video guidance for pump installation, parameter adjustment and daily troubleshooting. We supply standard English operation manuals with every shipment.

On-site Installation & Debugging for Large Projects

For bulk municipal, agricultural and industrial engineering orders, we can arrange experienced technicians to deliver on-site testing and commissioning service.

Global Fast Spare Parts Delivery

We stock complete spare parts for all pump series. Once quality defects are confirmed, replacement components will be shipped rapidly to minimize your equipment downtime.

1-Year Standard Factory Warranty

Applications

Township Municipal Water Supply

Mini automatic booster pumps solve low water pressure for villages, small towns and community centralized water supply pipe networks. Matching small fans are available for auxiliary ventilation of municipal pump rooms.

Family Farm & Garden Irrigation

Small self-priming pumps & stainless steel deep well submersible pumps support farm irrigation, garden watering and mountain village domestic water intake.

Industrial Cooling & Circulation

Mini circulation pumps provide stable liquid circulation & cooling for small processing workshops, boiler and solar hot water systems. Auxiliary fans can be matched for workshop air circulation.