The JDP-255/370 series pumps are regarded as one of the best surface pumps for deep well water priming. 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 3″ well and connected to the centrifugal pump body by two pipes. For working principle, please refer to the pipe connection below.
Usually, these pumps are used with a set of TANK-AUTO system include the tank, the pressure gauge, the pressure switch, the foot valve, etc. The TANK-AUTO system is another most significant merit of this pump, which make the pumps more convenient for using.
These pumps are suitable for pumping clean water and chemical nonaggressive fluid. They are extremely reliable, economical to use in domestic applications. To ensure adequate counter-pressure, it is always better to install a foot valve with a filter on the suction end. These pumps should be installed in a covered area, protected against the weather.
Pump Body: Cast Iron
Mechanical Seal: Carbon / Ceramic / Stainless Steel
Heavy Duty Continuous Work
Motor Housing: Aluminum
Shaft: Carbon Steel / Stainless Steel
Insulation: Class B / Class F
Protection: IP44 / IP54
Cooling: External Ventilation