4PSS/6PSS Stainless Steel Impeller Solar Irrigation Pump

This is a type of AC/DC hybrid or pure DC submersible deep well pump.

Model Interpretation:
4PSS / 6PSS: Typically represents the pump body diameter (4 inches ≈ 100mm, 6 inches ≈ 150mm), "PSS" often stands for "Stainless Steel Deep Well Pump" or "Multistage Centrifugal Pump".
Key Features: All stainless steel impeller (304/316 material).
Core Components: It is driven by a permanent magnet brushless DC motor (or three-phase asynchronous motor), combined with a multi-stage stainless steel impeller and diffuser.
Core Working Principle: Stainless steel multi-stage centrifugal
Its working principle is the same as that of ordinary centrifugal pumps, but the materials and motor control are more advanced:
Power Source: Uses DC power generated by solar panels (or mains power/generator) to drive a brushless DC motor (BLDC) or AC motor at high speed.
Centrifugal Pressurization: The motor drives the stainless steel impeller to rotate at high speed, and the water is thrown out by centrifugal force, guided by the diffuser, and the pressure is accumulated step by step.
Hybrid Power Supply (Highlight): Many PSS series (such as the 4PSS-H series in the data) support AC/DC dual power input. This means that solar power is used when there is sufficient sunlight, and mains power or a generator can be used for backup power on cloudy days or at night, ensuring uninterrupted water supply.
Core Features: Robust and durable, wide voltage range, high head

Feature Detailed Description
All Stainless Steel Impeller The biggest upgrade. The impeller is precision cast from 304 or 316 stainless steel. Compared with plastic impellers, it is not afraid of sand or abrasion, and has extremely high hardness. Even if the well water contains trace amounts of sediment, it can operate for a long time without damage.
Ultra-High Head This is a "very powerful" series. The data shows that its head is extremely high (some models can reach 200 meters or even higher), which is very suitable for extremely deep wells or scenarios requiring long-distance water delivery.
Wide Voltage Operation  Designed for solar power, it supports wide voltage input (such as DC 90V-460V), which can adapt to voltage fluctuations caused by changes in light intensity, and will not fail to start due to low voltage.
AC/DC Hybrid Power: Many models (with the -H suffix) support grid power/solar power complementarity. This is where it's smarter than ordinary solar pumps, solving the problem of pure solar power being dependent on weather conditions.

Typical Application Scenarios:
The 4PSS/6PSS series is the preferred choice for high-end agriculture, commercial use, and water extraction from challenging water sources:
Deep Well High-Lift Water Extraction:
Used for ultra-deep wells exceeding 100 meters or even 200 meters, where ordinary pumps simply cannot reach the water; a high-lift stainless steel pump is necessary.
Sandy Well Water/Harsh Water Quality:
If your well water, even after filtration, inevitably contains a small amount of sand or particles, pumps with plastic impellers (LSC series) will wear out quickly. In this case, the PSS series with stainless steel impellers must be used.
Commercial and Municipal Water Supply:
Used for centralized water supply in hotels, resorts, islands, and other locations, requiring equipment to operate stably 24 hours a day, and the water quality must meet drinking water standards (stainless steel does not rust and prevents secondary pollution).
Seawater Desalination and Chemical Applications:
If a PSS pump made of 316L stainless steel is selected, it can be used to transport seawater or weakly corrosive chemical liquids.

Selection and Usage Precautions:
Power and Solar Panel Matching:
The PSS series typically has a higher power rating (ranging from several hundred watts to several kilowatts), so you need to configure a solar panel array with sufficient power.
For example: For a 1.5kW PSS pump, it is recommended to configure 1.8kW-2kW of solar panels to ensure the current demand at startup.
Well Diameter Requirements:
4PSS: Requires a well diameter greater than 100mm (4 inches).
6PSS: Requires a well diameter greater than 150mm (6 inches). Please be sure to measure your well diameter to avoid buying a pump that is too large to fit down the well.
Cable Configuration:
Since it is a deep well pump, the cable length often needs to be customized. As the depth increases, the cable resistance increases, requiring a thicker wire gauge to reduce voltage loss, otherwise, it may cause the motor to burn out.

The 4PSS/6PSS series stainless steel impeller solar pump is the "ultimate weapon" for deep well water extraction. If your well is very deep, or the well water contains trace amounts of sediment, or you require a continuous 24-hour water supply (with mains power backup), then choose this series without hesitation. Although the price is higher than plastic impeller pumps, its durability and stability are absolutely worth the extra cost.