The JDP-505A/705A pumps are regarded as one of the best surface pumps for deep well in water priming. With two back to back impellers to gain good performance in suction and head output. It consists of two pumps connected in series, one is ejector pump and the other is centrifugal pump. The ejector pump is lowered in a 4" well and connected to the centrifugal pump body by two pipes. For working principle, please refer to the pipe connection below.

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PUMP
Pump Body: Cast Iron
Impeller: Brass/Techno-polymer
Mechanical Seal: Carbon / Ceramic/ Stainless Steel

MOTOR
Single Phase
Heavy Duty Continuous Work
Motor Housing: Aluminum
Shaft: Carbon Steel / Stainless Steel
Insulation: Class B / Class F
Protection: IP44 / IP54
Cooling: External Ventilation