We tested in depth the Big World BQ-5000L, imported in Italy by Corallinea. (qui l’articolo in italiano).

As usual we measured the hydraulic head, flow rate, power consumption and noise. Being the BQ-5000L an electronic pump with digital external controller we were also able to test the flow rate at each step, together with the power consumption. It was not so easy for the pump head but you will see.

For the hydraulic head we used the usual static method, but as the BQ-5000L is said to have a 5 m head we had to move things around a bit. For the flow rate we used a flow meter, for the power consumption our current probe meter and the phonometer for the noise.

What stands out about the Corallinea BQ-5000L is its complete chinese manufacturing and the really competitive price at which is sold.

Corallinea Big World BQ-5000L Technical Features

	European Version 230 V – 50 Hz
Flow rate:	5.000 l/h
Power Consumption:	80 watt
Head:	5 meters
Length	128 mm
Depth	100 mm
Height	70 mm
Price	120 euros

The BQ-5000L is said to have an energy efficiency of 62,4 liters for each watt consumed, for a total economic efficiency of 41,7 liters per second per euro or 12,500 l*m/h. For comparison, the Vertex V6 declares 7,500 l*m/h.

With a price, in Italy, of 120 euros we will be buying a modern electronic pump, adjustable by an external controller, with incredible performances and a very good economic and technical efficiency.

Manufacture

The pump is really just itself, it doesn’t have a sophisticated package, or at least we didn’t get one! The accessories are reduced to a minimum.

We have the pump, the power supply and the suction cups for holding it at the sump bottom. Nothing else.

We deassembled the pump like ever.

We didn’t understand if the two plastic parts screwed or glued together. To avoid breaking the pump we didn’t force it too much.

To find the impeller you have to rotate the cover.