Doyin DC Stainless Steel Submersible Pump 4SPS4

Description

The Doyin DC Stainless Steel Submersible Pump 4SPS4 is a professional-grade, solar-optimized borehole pump. It is distinguished from other models by its Stainless Steel Impellers, which provide significantly higher durability and resistance to abrasive particles (like sand) compared to plastic impellers.

The nomenclature “4SPS4” typically breaks down as: 4 (4-inch diameter), S (Submersible), P (Professional/Premium series), S (Stainless steel impellers), and 4 (Rated flow of 4.0–4.5 m3/h).

1. Key Technical Specifications

While the specific “Head” (vertical lift) depends on the motor wattage, the 4SPS4 series generally follows these parameters:

• Rated Flow Rate: 4.0 to 4.5 m3/h (4,000–4,500 Liters per hour).

• Voltage Options: Available in 48V, 72V, 110V, or 216V DC configurations.

• Power Range: Typically ranges from 750W (1.0HP) to 2200W (3.0HP).

• Max Head Capacity:

  • 750W Model: Up to 90–110 meters.

  • 1500W Model: Up to 180–210 meters.

  • 2200W Model: Up to 280 meters.

2. Premium Material Construction

The “SPS” designation marks this as an all-stainless steel unit, designed for longevity in deep wells.

3. Professional Features

• Sand Resistance: The precision-cast stainless steel impellers are much harder than plastic, allowing the pump to handle water with higher sand content (up to 150g/m3) without losing efficiency.

• Built-in MPPT Controller: Usually paired with an external intelligent controller that maximizes the energy harvest from solar panels and provides:

  • Dry-run Protection: Sensors stop the pump if the water level drops too low.

  • Tank Full/Well Low Sensors: Automatically starts/stops the pump based on water levels.

  • Soft Start: Prevents mechanical shock and extends the life of the motor.

• Encapsulated Motor: The motor is oil-filled or resin-filled (food-grade) to ensure perfect cooling and waterproof sealing at extreme depths.

4. Ideal Applications

1. Industrial Water Supply: Reliable delivery for factories or processing plants.

2. Professional Irrigation: Large-scale farms requiring consistent high-pressure flow.

3. High-Rise Buildings: Boosting water to very high-altitude storage tanks.

4. Deep Borehole Projects: Specifically for wells deeper than 150 meters where plastic impellers might fail under pressure.

5. Solar Sizing Guide

To run a 4SPS4 efficiently, your solar array should be roughly 1.3x to 1.5x the wattage of the motor:

• For 750W (1HP) Pump: Use ~1100W–1200W of solar panels.

• For 1500W (2HP) Pump: Use ~2000W–2200W of solar panels.