How to choose a pump for a well: expert advice

Solving the problem of water supply with the help of a well, it is necessary not only to build it correctly. You also need to find him a suitable pump.

How to choose pumps for wells, our article will tell you.

Criteria for selecting a pump for a well

To figure out how to choose well pumps correctly, you first need to decide on the selection criteria.

They will be as follows:

1. Purposes and frequency of use - if you plan to use the pump for any narrow purposes and do it irregularly, then you should not buy an expensive model. For example, for watering a small garden plot there will be a rather sufficiently inexpensive apparatus “Streamlet” or “Kid”. And for year-round water supply of all residents of the house it is worth looking at more powerful models;
2. Performance - solving the problem of how to choose a pump in the well, you need to determine the amount of water needed to meet your needs. In this case, all points of water intake should be taken into account - these are all taps, toilet bowls, washing machines and dishwashers. For calculation, the amount of water that can be consumed at a time is taken;
3. Water pressure is another parameter that cannot but be mentioned in telling how to choose a well pump. This criterion indicates the maximum height to which the device can supply water. You should select those devices for which this value is slightly higher than the value that you require. This is due to the need to overcome the resistance of pipes;
4. Type of equipment - all types of devices have certain design features that need to be considered, giving preference to one or another type.

Tip! Carefully consider the issue of product performance. If the device is less powerful than required, it will lead to various problems during its operation. In particular, a set of water in large containers will take much more time than you would like.

Types of Well Pumps

All of these devices by type of placement can be divided into surface and immersion. By design features they are divided into centrifugal and vibration. Consider these types in more detail.

Surface type

These units are installed at some distance from the water source, which makes them quite popular among owners of country houses. After all, such devices can be installed directly in the house, and this greatly simplifies their maintenance. (See also the article Connecting a pumping station to a well: how to do it yourself.)

After thinking about how to choose pumps for a well, Russian buyers often make their choice in favor of such brands as CALPEDA (Italy), WILO (Germany), GRUNDFO (Denmark). Russian products are also in demand, for example, products of the firm “Dzhileks”.

It should be noted that such devices are capable of lifting water from a depth of not more than 9 meters. This is their disadvantage, due to which gardeners may prefer them to another type of device - submersible.

Submersible type

Such devices are placed in the well, directly in the water column. During operation, they are cooled by the flow of water passing through them. Because of this, it is impossible to turn on such a pump without water, because it can fail.

In addition to this drawback, submersibles have a number of advantages:

• structural reliability;
• simplicity of the device;
• the ability to supply water from a great depth.

Among these devices, there is a separate subspecies - these are well devices. They are more efficient cooling and tolerance to the presence of solids in the water.

Thinking about how to choose submersible pumps for wells, we recommend to look at the products of the brand WILO, LOWARA and NOCCHI. They perfectly manifest themselves in the process of operation, differing in their quality and reliability.

Centrifugal type

Devices of this type are equipped with a wheel with blades placed inside the body. It is rotated by an electric drive, which creates a centrifugal force that pushes water into the pipeline.

The disadvantage of this pump is its extreme demands on the quality of water. The presence of even small impurities in it will inevitably lead to the failure of the apparatus. As for the merits, they can be attributed to high performance and ease of operation.

Vibratory type

Related devices are characterized by the absence of an electric motor in them. Its function is performed by electric and vibration magnets.

Due to its simple design, such a device is very reliable and can last for a very long time. Another advantage is the low price. That is why vibratory pumps have become so widespread.

Optimum technical parameters of pumps for a well

Now it’s time to consider how to choose a submersible pump for a well or another type of device with optimal technical parameters.

Power

This parameter is measured in watts (Watts) or kilowatts (kW). It is an indicator of the volume of water pumped per unit of time. The more consumption points, the greater must be the power.

Tip! It is not worth purchasing a unit with maximum power, since this will lead to waste of money. For the needs of a small family, an apparatus with a power of 250-350 W will suffice.

Performance

This is the amount of water that a well pump can lift in a certain amount of time. In this case, the unit of measurement is cubic meter per hour (m? / H). For a family of three, there will be enough instrument, in which this figure will be equal to 4.2 m? / H.

Maximum head

For a good water supply from the well, you need sufficient pressure in the pipes. It is called pressure.

The following instruction will help determine its optimal value:

1. we add the horizontal distance to the depth of the well, that is, the length of the ground hose or pipe;
2. for every 10 meters of the resulting gap, we add 1 meter - this is the pressure loss during transportation;
3. we add another 20% to the resulting figure - this will be the final result.

Conclusion

Having made a well with your own hands, you need to pick up and install a suitable pump in it. To select the desired apparatus, you must first determine the specific goals and the expected frequency of its use. This will help you choose the type of pump, as well as its specific model with optimal technical parameters.

If you are at a loss in the selection of products, watch the video in this article. It will help resolve your doubts.