
Three Phase Stainless Steel Submersible Borehole Deep Well Pump 4SD. Stainless Steel Construction: Made of AISI 304 SS for anti-corrosion, rust-proof, and long service life. Food Grade Oil Usage: Uses oil for food machinery and pharmaceutical use, ensuring no pollution. 100% Copper Wire Motor: Equipped with 100% copper wire winding for high efficiency and durability. Customizable Voltage: Supports single-phase 220-240V/50Hz or customized voltages and frequencies. High Sand Resistance: Designed to handle maximum sand content of 0.25% effectively. Thermal Protector: Every motor includes a thermal protector for overload protection. ISO 9906 Compliance: Curve tolerance strictly follows ISO 9906 standards for performance. Italian Production Tech: Adopts Italian pump production technology for precision and quality.