Description
The Doyin AC Submersible Pump 4SDM3 is a high-performance deep-well borehole pump designed for efficient water extraction. It is widely used in residential, agricultural, and industrial settings because of its robust multistage design and ability to handle small amounts of sand.
The “4SDM3” name typically refers to a 4-inch diameter, Submersible Deep-well, M (single-phase) pump with a rated flow of 3 .
Key Technical Specifications
While exact performance depends on the specific motor wattage (HP) and the number of stages (impellers), the 4SDM3 series generally features:
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Rated Flow: 3 (3,000 Liters per hour).
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Max Flow: Often reaches up to 4.8 .
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Power Source: AC Single-phase (220V–240V / 50Hz) or Three-phase versions.
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Maximum Head: Can range from 40 meters to 300+ meters vertical lift depending on the number of stages.
Professional Engineering Features
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Anti-Sand “Floating” Impellers: The impellers are made of high-strength technopolymer (like PPO) and are designed to “float” to allow sand particles to pass through without seizing the motor.
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Stainless Steel Construction: The external casing and motor shaft are made of AISI 304 Stainless Steel to prevent corrosion.
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Oil-Filled Motor: Uses food-grade lubricant to ensure superior cooling and lubrication of the motor bearings at high depths.
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Built-in Thermal Protection: Automatically shuts down if the motor overheats to prevent burnout.
Comparison: AC vs. DC Options
If you are considering whether to stick with an AC pump or switch to a DC/Solar version, here is a quick look at how they differ:
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