Rating of submersible well pumps by reliability: which one to buy

1. Pedrollo NKm 2/2 – GE

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Price – 40,000 rubles

The first place in the top submersible pumps for wells goes to a model from an Italian manufacturer with a funny name for a Russian - Pedrollo. The device is distinguished by its reliability, quality and efficiency. At the same time, the pump consumes little electricity. In general, some advantages.

Although for arid regions it may seem rather weak, since it has a 370-watt motor. Under standard conditions (shallow aquifer), the device copes well even with voltage sags or from a weak network. The latter is a significant advantage, especially if you live in a village where this happens often.

The maximum pump on the hydraulic curve is 32 meters. At this depth, the unit will produce 8-10 liters per minute. Being at a depth of up to 20 meters, this figure will increase to 70 liters per minute. At a depth of 6 meters, productivity will increase significantly. In order not to damage the pump, it has a float switch that turns off the device at a certain water level.

Advantages:

• Works for nutrition problems
• Dirt-resistant

Flaws:

• Price

2. Grundfos SB 3-35 M

Price – 25,000 rubles

The new model from Grundfos was developed to make it more affordable.To achieve this, the design was simplified as much as possible, including the design, which now seems more modern and minimalistic.

The main difference between the device and its “bigger brothers” is the lack of automation, which can be installed by purchasing separately. This and other similar solutions made it possible to reduce the price by a quarter from the SBA series models. A powerful 800-watt electric motor provides strong water pressure (up to 20 liters every minute) at a depth of 25-30 meters. With such indicators, this is an excellent option for deep-water wells. The downside is that the model has low sand resistance, and there is quite a lot of sand at a depth of 30 meters.

Advantages:

• Excellent choice for price/quality
• Power
• Design

Flaws:

• Ill-conceived dry-running protection system (set manually)

3. GARDENA 5500/5 Inox Premium

Price – 26,000 rubles

A high-quality pump from the Chinese company GARDENA is reliably assembled and easy to operate. Although some may think its cost is overpriced, because “this is China,” the 850-watt engine and 6 sections completely offset its price. The device can operate at a fairly low depth and at the same time produce powerful pressure. Although there is a complaint about the unit - they could have at least installed dry-running protection so as not to have to buy it separately, because this is not a global brand where you have to overpay for the name.

Advantages:

• Works at low depths with good pressure
• High quality stainless steel case

Flaws:

• Not the best engine protection

4. BELAMOS KF 80

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Price – 15,000 rubles

The all-silver KF 80 submersible pump from BELAMOS is manufactured in China. The build quality is not inferior to the Italian Pedrollo.“Sand resistance”, according to the manufacturer, is at the level of Pedrollo NKm 2/2 - GE (150 grams per cubic meter). The device is considered the best option for deep wells because of its power - at a depth of 20 meters the pump will produce a little more than 3 cubic meters per hour.

The disadvantage is the seals. After a few tens of cubic meters they begin to leak oil. If you do not need water and oil, then every few tens of cubic meters you will have to take out the pump, disassemble it, wash it and replace the seals.

Poor quality seals are a serious drawback, but you can live with it. Moreover, considering that it is almost 2 times cheaper than the products of the same Pedrollo and GARDENA from this top.

Advantages:

• Sand resistant
• Works well at great depths

Flaws:

• Poor quality seals

5. UNIPUMP ECO FLOAT-3

Price – 16,000 rubles

The top submersible pumps for wells according to the 2021 version are closed by a model from UNIPUMP. With a relatively low motor power of 480 W, it is capable of delivering up to 85 liters every minute, which is a good result. The device also withstands strong pressure, so it is capable of pumping water at very low depths.

ECO FLOAT-3 is the golden mean among all submersible pumps in this rating. It doesn’t stand out in any way, but it does its job well, and it costs less than the premium Grundfos and Pedrollo models. If you are buying a submersible pump for the first time, then UNIPUMP is perfect for your first experience.

The silver housing and filter are made of stainless steel, and the wheels for the pump sections are made of polycarbonate. Sand resistance, according to the manufacturer, is 100 grams per cubic meter.Quite a high figure; not even all premium Grundfos models are able to work with such water for a long time.

The disadvantage of the device is the poor motor protection system. The motor current protection system will operate when the current increases to 17 A.

Advantages:

• Works at fairly low depths
• Resistant to sand (up to 100 grams per cubic meter)

Flaws:

• Unsuccessful motor protection system