1HP 40-meter QDX Submersible Pump

When looking at a 1HP QDX Submersible Pump with a 40-meter head, you are looking at the maximum performance limit of the QDX (shallow well/utility) category.

Key Specifications & Performance

Real-World Head vs. Flow Expectations

Because QDX pumps are open-vane utility pumps rather than multi-stage deep borehole pumps, their water volume drops off significantly as they approach their maximum vertical limit:

• At 10–15 meters lift: Pushes near its maximum volume (~2,500 Liters per Hour). Great for transferring water quickly from low tanks.

• At 25–30 meters lift: Sits in its true optimal working zone, delivering a steady 1,200 to 1,500 Liters per Hour.

• 40 meters lift: Reaching its physical pressure limit. The flow will slow to a small trickle ($\le 300\text{ Liters per Hour}$).

Core Design Features

• Tethered Float Switch: Usually comes equipped with a floating plastic power switch. If the water level drops too low, the float drops down and automatically shuts down the motor before the seals run dry and melt.

• Built-in Thermal Protection: Features an internal sensor wrapped directly into the copper motor windings. If the pump jams or overheats, it cuts power automatically, resetting itself once the motor cools down.

• Bottom Intake Screen: The pump draws water from its base plate. This makes it highly effective at clearing out sumps, draining concrete storage tanks, or emptying flooded areas down to a few centimeters.

Best Applications

• Pumping water out of hand-dug wells or shallow underground rainwater cisterns.

• Boosting line pressure from a ground-level clean water tank to a multi-story roof tank.

• Light garden hose irrigation and pool drainage.