Top 10 well pump

Continuing our rating Grundfos SQE 1-95 - centrifugal deep well pump. The SQE series of pumps is interesting to many. Let's start with a permanent magnet electric motor - it not only has a smaller starting current, which is important for the 1650-watt SQE 1-95, but also equipped with “out of the box” soft start and frequency-controlled speed control. Therefore, he feels great in the weak power grid, and he managed to pair a decent pump section with him.Moreover, there is no “roulette” with this particular model: alas, and Grundfos produces more and more models in China. The same can still be bought with the inscription Made in Denmark, and we have not found any complaints about the quality of the “purely Danish” pumps. You can also find Hecho en Mexico pumps, but do not be afraid that they were collected after a good sip of tequila: here the assembly is also at a decent level.

The presence of production in Mexico for Grundfos is logical - this pump is the best suited for a dry climate, when you have to dig deep into the ground before the aquifer thoroughly. Its maximum pressure is as much as 142 meters! However, for this you have to pay with not very impressive performance - no more than 1.7 cubic meters per hour with a lifting height of 50 meters and the motor output at one hundred percent power.

The minus of the pump is that he does not like sand: the maximum permissible concentration is three times less than that of Pedrollo. Alas, this was due to the ability to develop a lot of pressure - for this the “centrifuge” needs minimum gaps, high revolutions and a relatively small channel capacity in the impellers.

According to the characteristics, the Micra 100M submersible pump is more balanced than the Grundfos - it can only lift water up to 90 meters, but on the same 50 meters as the SQE 1-95, it will give twice the flow. Therefore, undoubtedly, he deserves attention. Moreover, due to the small diameter of the case, it can even be installed in three-inch wells.

The motor is simpler here: a 1.2-kilowatt asynchronous without “tricky” electronics, so the “Italian” is also much cheaper than the “Dane”. It is produced by a specialized company that is part of the DAB concern - Tesla S.p.a, which exclusively produces electric motors for underwater work. A curious feature of them is that the engine at the factory is filled with antifreeze, which allows you to transfer heat to the case (and from it to the water surrounding the pump) not only from the stator, but also from the engine rotor.

Unfortunately, in one important parameter, the pump becomes an outsider in the rating of the best pumps for wells: compared to the standard Pedrollo, its “sand resistance” is no longer three times lower than in Grundfos, but in all five.

The guest from Kharkov is capable of the most serious work: if you hear the quiet “Glory to Ukraine!” From a well over a hundred meters, then this is exactly “Aquarius”. The main thing is not to get confused: under this brand, the Jilex pumps were also produced at that time, and their reliability is no worse than those of Kharkov pumps (and, we note, renaming to Vodomet didn’t make them much better, but at least the confusion cleaned).

It was possible to achieve such characteristics by using the pump section with as many as 25 low profile wheels (we already wrote that for such a height, this is an unavoidable condition). Asynchronous 2.5 kW motor drives them. The pump is delivered immediately ready for “deep-sea diving” - with a cable and a network cable 140 meters long each. With such a lifting height, the pump can give a little more than 18 liters per minute, so you don’t have to “strain” the water from the tap. At 60 meters, the output increases almost in proportion to the change in height - the hydraulic curve is as close to linear as possible.

Unfortunately, the manufacturer does not offer protection against dry running out of the box, so you have to buy it separately.

A quality 1600-watt submersible pump that is not afraid to work in a deep well: even from 150 meters it can lift water, even if it is only a quarter of a “cube” per hour. So the working conditions that are optimal for him are the depth up to 80 meters, from where he already “gets” two cubic meters per hour. Actually, the manufacturer specifies this depth of immersion in the passport.

The big plus of this submersible pump is its “omnivorousness”, the mineralization of water can reach up to 150 grams per cubic meter. In addition, its diameter is 76 mm, so it does not require the drilling of wide wells. From here and deserved popularity, and the place in our rating.

The pump is designed for not very deep, but high-production wells: the maximum pressure for it is 50 meters, and the maximum depth of immersion relative to the water level is 19 meters. The seven-speed pump can deliver up to 100 liters per minute (with a small lift height, naturally) and develops pressure up to 5 bar, so it is perfect for water supply at home and for irrigation with a reserve.

The engine power is 950 W, so it does not have excessively high power supply requirements. Pulling out the pump for maintenance is not difficult - it weighs less than 9 kilograms. In general, we definitely like him. But let us point out the nuance of the design (common, by the way, with other Gardena pump series) - the lid on which the thread is made to connect the hose fitting or the rigid pipeline is made, though of impact-resistant, but plastic.

And in this category, the "water pump from Kharkov" got close to the leader of the rating - even though it is expensive, but reliable and productive. With almost kilowatt power, it can operate with a pressure of up to 70 meters, the optimum depth is no more than 50. In this case, it will provide a stream of at least 30 liters per minute. Engine - oil-filled, quiet and not causing special problems.

Unfortunately, any “near budget” pump has its own “narrow” places. БЦПЭ 0,5-50У is also not deprived of them - he does not like sand, and this should be taken into account when buying.

An inexpensive well pump, despite the Italian brand, is expected to be built in China: what else can you expect for this money? But on the other hand, it has a moderate power consumption (engine is five hundred watts), it “digests” according to the passport up to 100 g / m3 of sand, which is not surprising for a screw pump. But because of this, it is sensitive to pressure, performance even at the minimum height is not particularly great - 2.6 cubic meters per hour.

Therefore, it is more interesting as a dacha option, when water consumption is relatively small, but the possibilities of the electric grid and the owner’s budget are limited. It should be noted that to reduce the cost of the case is not made of stainless steel: ordinary steel is chrome-plated, so the store should check the absence of damage on chrome right away and avoid their further occurrence. Alas, the budget requires sacrifice ...

The vortex borehole pump with brass impellers will provide up to 35 liters per minute with a 20-meter rise, and its limit is 50 meters: the flow will drop to 5 liters / min. Quite good characteristics, but unfortunately he is not spared from the characteristic features of his design. Vortexes have an excessively high sensitivity to pollution, and here the sand content is not more than 10 grams per cubic meter. Be sure to keep this moment in mind - such a pump will not fit every well. True, the power consumption of the pump was made moderate (and low-efficiency vortex pumps also "get sick") - 4SKM 100 costs 750 watts, which is not so much.

However, due to the demands on clean water, he cannot receive a high rating.