Pump core: the history of an uncompromising miniaturisation
Piston pump cores are one of the foundations of Sauermann's industrial specificity in the condensate pump sector. Why is that? Because they are designed by the Group's R&D department in France and manufactured in France, whereas many other pumps on the market outsource the design and production of this essential component.
Exclusive and patented technology
The APO2 and NPO are built around a patented Sauermann system called the Dual Wave Piston Pump. This is the only technology that uses the two oscillation cycles of the alternating current to make its pumping movement in a "round trip". The operation is therefore more energy efficient, and allows for a smoother and more fluid back-and-forth movement, reducing vibration and therefore noise during operation. The durability of the pump core is also improved as the smooth movement avoids the abrupt return of the piston by the sole effect of a spring.
Sauermann's latest NPO core goes one step further with a new patent: the copper coil is now mounted on a holder that can be attached directly to the motherboard PCB of the mini pump via a solderless press-fit system.
No compromise on performance
Another achievement of the engineers is that this new NPO generation manages to keep its performance completely unchanged despite its simplification and miniaturisation. Its pumping power continues to lead the market: it is the only core pump to deliver a maximum flow rate of 20 litres/hour, with a record suction head of 3 metres. Its lifting potential is 10 metres, the highest on the market.
And to top it all off, this pump core is considerably quieter than the previous APO2 generation: from 22 to 19 dB(A)! This consolidates Sauermann's lead over its competitors in this field. For more information on the sound performance of the new NPO equipped Si-20 mini pump, please refer to this article.