The efficiency of autonomous water supply systems largely depends on the correct choice of equipment. When deciding which is best for a well, it is recommended to listen to the opinions of experts and read reviews from the owners of various models of units.

The choice of a submersible pump for a well should be based on an analysis of operating conditions and an assessment of the technical features of the water source.

First of all, pay attention to the following characteristics:

• The depth of the hydraulic structure and the maximum possible pressure of the pumping unit.
• The diameter of the casing pipe, and the possibility of using a pump based on its overall dimensions.
• Water quality, many pumps are not designed for pumping liquids with a large amount of mechanical impurities (sand).
• The required equipment performance (flow characteristics) must meet the needs of all consumers.

Based on these data, you can select pumps of different price categories.

Budget pumps

If irregular operation of a shallow well is expected, then it is quite possible to get by with pumps in the inexpensive price segment. At the same time, it is possible to choose models of domestic and imported production.

Perhaps one of the most popular models of domestically produced equipment. The cost of the unit is 5-6 thousand rubles, depending on the configuration and modification. The outer diameter of 102 mm allows the pump to be installed in wells with a cross-section of at least 110 mm. The body is made of stainless steel (the main working units of the pump part are brass).

Provides a water rise of 50 meters, the maximum productivity of the installation is 2.4 cubic meters per hour. It is reliable and unpretentious; when installing in a well, you should remember that the minimum distance to its bottom should be 60 cm, and the immersion depth should be at least 50 cm.

Ideal for domestic and country needs, can be used year-round, compatible with automatic control systems.

It is characterized by its small dimensions and minimal power consumption (up to 750 W). It can be used to provide water to consumers of various groups, with a maximum consumption of 3 cubic meters of water per hour.

The optimal well depth is 20 meters, and the pump can be installed in hydraulic structures with an internal cross-section of 85 mm. A feature of the models in this series is the use of a floating impeller, which increases the reliability of the pump when pumping water with mechanical impurities (sand). The cost of units in this series starts from 6 thousand rubles.

. The products of this brand have always been distinguished by their quality and reliability, and this model also belongs to the budget price segment. The pump power of 1.73 kW allows for a flow rate of up to 7.5 cubic meters per hour, with a maximum pressure of 106 meters.

The unit is equipped with protection against power surges and dry running, which significantly increases its service life. It can be used as part of automated water supply systems, provides filling of various tanks, and is considered a universal-purpose pump. The average price is 6 thousand rubles.

Costing from 7 thousand rubles, it can be used to supply water with an insufficient degree of purification (up to 150 grams of sand per cubic meter of water). The maximum productivity is 3.3 cubic meters per hour, while the pump can be operated at a immersion depth of up to 30 meters (maximum pressure 45 meters).

It is characterized by high tightness, is easy to maintain, and can be installed in wells, boreholes, and reservoirs of various types.

Mid-range pumps

The list of pumping equipment for wells at an average cost is quite extensive; experts advise paying attention to the products of the Gilex company. Units with a power of up to 1.1 kW provide a pressure of up to 115 meters, with a maximum productivity of 6.9 cubic meters per hour.

Features of the models include the use of a special filter in the design, which allows the equipment to be used even in wells with a significant sand content in the water. During operation, the device does not create vibration loads that could have a negative impact on the well casing.

They have high efficiency, they are reliable and durable, operation and maintenance do not require significant financial costs. The cost of various modifications of water cannons of this brand varies from 5 to 15 thousand rubles.

Quality pumps at a higher price

If you need equipment that can last the entire period of operation of the well, you should give preference to more expensive models.

As a rule, such installations are characterized by high efficiency, are reliable, and can be operated in various conditions.

Can be purchased for 27-50 thousand rubles. For this money you will get an installation that supplies up to 7.5 cubic meters of water per hour, with a maximum pressure of 155 meters. They are considered one of the most suitable types of equipment for providing country cottages.

Can be used in wells of minimal cross-section (internal diameter from 76 mm). It is worth noting that the units from this manufacturer are quite sensitive to water quality. Durability and trouble-free operation are ensured by various automatic protection systems (against dry running, overheating, voltage surges, and others).

None of the owners of Grundfos SQ pumps regretted purchasing these particular devices.

Submersible pump “Pedrollo 4BLOCK 4/14” with an average cost of 23 thousand rubles, it allows you to supply water with a sand content of no more than 150 grams per cubic meter.

Italian traditional manufacturers guarantee high quality equipment; the pumps are reliable and can be operated for a long period without additional maintenance. Installed in wells with casing with a cross-section of 100 mm.

They provide a flow rate of 6 cubic meters per hour with a maximum pressure of up to 88 meters. All main elements of the device are made of stainless steel, equipped with a three-phase electric motor, the safety of which is ensured by the tightness of the housing and the presence of automatic protection systems (IP68 degree).

Frequent water jet 115/75h belongs to the category of automatic water supply systems, the average cost (depending on the configuration) is 27 thousand rubles. Provides a flow rate of 115 l/min, a maximum pressure characteristic of 75 m, and can be operated at depths of up to 30 m.

Quite convenient to use and easy to manage. The automated system allows you to set the required operating parameters (flow rate, pressure in the pipeline, etc.). Allows you to simultaneously ensure water selection at several points, it is considered one of the most optimal equipment options for supplying a country house or cottage. Recommended when it is necessary to ensure significant water consumption over a long period of time (baths, saunas, laundries).

Multistage submersible pump "Wilo Sub TWU 3" It is distinguished by traditional German quality and can operate at up to 20 starts per hour. The main components are made of stainless steel (with the exception of polymer impellers), which guarantees a significant operating life of the installation.

Can be installed in wells with a diameter of 75 mm, the maximum immersion depth is 60 meters, with a possible pressure of up to 125 meters. The pump is available with various types of electric motors (single and three-phase), is economical and easy to operate, and does not require frequent removal for maintenance. The price varies from 29 to 45 thousand rubles.

used to supply water from various sources. The sealed housing provides reliable protection even from dirt. The average flow reaches 4.2 cubic meters of water per hour, the maximum pressure is 92 m, the immersion depth is up to 25 m.

Equipped with a bottom water suction with a built-in filter that provides protection against various mechanical impurities (clay, sand, other inclusions). The impellers are made of special thermal plastic, resistant to various aggressive environments. It is reliable and unpretentious; the cost of the unit reaches 22 thousand rubles, which is quite inexpensive for equipment of this class.

The choice of pumping equipment is quite wide, so choosing the optimal model for various operating conditions is easy.

If you do not have experience in this matter, then you should contact a specialist who can evaluate all the features of your well. In this case, the pump will serve for a long time and trouble-free.

Quality of the material: (What is your assessment of the article?)

Which pump to choose for a 30 meter well

Today we will pay special attention to wells with a depth of 30 meters, which are quite common, and will select the best well pump according to its characteristics. Exactly the one you need.

You can read the general article on pumps, perhaps there you will learn something new and interesting for yourself.

And all our articles on pumps are waiting for you, the collection is constantly growing and expanding, there will be even more of them soon. In the meantime, we move on to choosing a pump.

How to choose a pump for a 30 meter well

Having completed the drilling work, the team of workers left you a 30-meter well, and among a huge variety of submersible pumps, you need to choose the one that suits your parameters. It's not as difficult as it might seem. The drillers should have given you a passport for the well and there are recommendations on the correct selection of the pump. Following the directions in the data sheet, choose what suits you and everything will work well.
You weren't given these recommendations?
Then we will now select a deep-well pump for a 30-meter well according to the data you have.
Let's find out the diameter of the pump; for this it is important to know the diameter of your casing.

Here is a small plate that will help you decide on the diameter of the pump:

Note! 4" submersible pumps can have different diameters, ranging from 98 to 105 mm. To save money, workers sometimes install narrow 98 mm pumps in a 117 mm plastic casing. The internal diameter of this pipe is 101-102 mm, which means this pump can be squeezed in there. Plastic has the ability to bend, contract and expand, change shape, in other words. This leads to the fact that, in the event of a breakdown, a 4-inch pump made of HDPE 117 mm pipes you won't be able to get it. It will work for 5-10 years, during which time you will lose the warranty and will have to drill again.

We’ve decided on this, let’s look further.
Most water pumps are labeled with two characteristics: pressure and performance. For example, the popular Grundfos SQ 2-70 tells us that its productivity is 2 m 3 / hour and it can produce these 2 cubic meters from a depth of 70 meters, 70 is its pressure. Knowledge of these parameters will help us choose the right pump for a 30-meter well.
It is important to understand that the performance of your pump should not be more than 90-95% of the well's flow rate.

Water pump for a 30 meter well for irrigation

Not everyone needs to bring water into their house; for many summer residents, a simple summer arrangement is enough to water the site and water outside. Such wells do not need powerful and expensive pumps; a completely ordinary one will suffice.
Now we will find out what kind of pump is needed for a 30-meter well for irrigation.
You should know that a submersible pump is selected not by depth, but by dynamic water level in the well. This is the lowest possible water level during pumping.
We don't know your dynamic level, we'll take it as 23 meters. You should know the exact level or just look in the well's passport.
If you have dynamic level about 15 meters, then take the pumps from this article.
At dynamics of 10 meters or less, this material will help you.
So, let's say you need to lift water from a depth of 23 meters. This means that the required pressure must be 23 meters for the water to rise to ground level. Plus, we need a pressure of at least 2 atmospheres to make it comfortable to use (1 atm = 10 meters of pressure).
In total, the required head is 43 meters. We select...

Well flow rate is 1.5 m 3 /hour.
It is very likely that you have a sand well, the following models will suit you:

• Aquarius 0.32-40U
• Gilex Vodomet 40/75
• SPERONI STS 0519 or SPS 0521
• Grundfos SQ 1-50 (3 inches)

Well flow rate is 2 m 3 /hour.
For a 30-meter well with slightly higher productivity, these models are suitable:

• UNIPUMP ECO 1
• SPERONI SQS 2-45 (3 inches)

Well flow rate is 2.5 m 3 /hour.
A small capacity limestone well goes well with the following pumps:

• Aquarius 0.5-50U
• Gilex Vodomet 55/75
• SPERONI STS 1010
• UNIPUMP MINI ECO 2 (3 inches)
• Aquario ASP 1C-60-90 (3.5 inches)

Well flow rate is 3 m 3 /hour.
This is a typical flow rate of an artesian well in the Moscow region. Here are the optimal pumps for it:

We calculate the pressure: we need to raise water from a depth of 23 meters to ground level, this is equal to a pressure of 23 meters, the height of the tap from the floor is another 1 meter, already 24 meters. The water pressure in the tap should be 3 atm, as we know, 1 atm. = 10 meters of pressure. 24 + 30 = 54 meters. And we will add 20 meters as a reserve so that the pump does not work at its limit and is less strained. Also, these 20 meters include various losses. Total, 54+20 = 74 meters- this is our pressure for a 1-story house.
If you have a two-story house, then you need to add another 3 meters to raise the water to the 2nd floor.
Pressure for The 2-storey house will be 77 meters.
The difference is small, so the same models will fit.

If your home is located in SNT, then there is a high probability that you have problems with voltage. This does not allow the pump to develop the required power and an additional 20 meters of reserve will be very useful!

Below we have collected the best pumps for a well 30 meters deep. In our experience, they have the highest quality in their price range.

Well flow rate is 2 m 3 /hour.

Well flow rate is 2.5 m 3 /hour.
This is a well with low productivity and the following models are suitable for you:

• Aquarius 0.5-100U.
• SPERONI SPS 1023.
• SPERONI SQS 2-90 (3 inches).
• Grundfos SQ 2-85 or SQ 3-65 (3 inches).

Well flow rate is 3 m 3 /hour.
Classic flow rate for the south of the Moscow region, the best pumps are these:

Well flow rate is 3.5 m 3 /hour.
You should look towards these water pumps:

• SPERONI SPS 1822 or SPS 1825.
• Grundfos SQ 3-80 (3 inches).

Well flow rate is 4 m 3 /hour.

• SPERONI SPS 1833.
• Grundfos SQ 3-95 (3 inches).

Vibrating Babies. Pumping stations and external pumps

It is very common to use a vibration pump like Malysh in a well 30 meters deep. Unlike the centrifugal pumps that we wrote about above, they cost only 2000-3000 rubles. Therefore, after reading the theorists, summer residents often buy a Malysh pump for the first time. Due to its vibration, it constantly muddies the water, slowly breaks the well, or completely breaks away and falls. We periodically receive calls asking us to get a vibration pump out of a well, but we have to pay 30,000 rubles. Few people want to pay for moving equipment...

Almost all units of this type can be divided into two main groups, used for dirty or clean water, although there are many more subspecies. So, in order to understand how, for example, a pump for a 10-meter well differs from a device that is used for a well of the same depth, we will pay attention to the classification by purpose. We will talk about all this, as well as about editing, below, and in addition, we will watch the thematic video in this article as additional material.

About submersible pumps

Purpose

• Water intake from water sources of this type can be carried out either by a surface (hydrophore) or by a submersible unit for pumping water. But the pump for a 15-meter well will already be of a submersible type, since hydrophores are effective only up to a depth of 9 m (meaning the level of water rise). Such devices have an elongated cylindrical shape with a small cross-section to make them more convenient to place in the service pipe, and have a cable attached to the body for fixing to the surface.
• Such units, as a rule, are centrifugal and are intended exclusively for clean water (without large impurities such as sand or silt). This pump for a well of 80 meters or even 200-250 m can perfectly meet the needs of not only domestic, but also industrial needs. In order to avoid interruptions in water supply, the power of the unit is selected according to the amount of water consumed, and you can see such calculations for your home in the table below.

Water consumption per hour in different bathrooms

• A vortex pump for a well of 40 meters or more is very similar in appearance to a centrifugal unit, only the water supply here is carried out in a slightly different way. Such devices are used when you need to create strong pressure with a small volume of water, for example, to wash any items, since they are 3-7 times more powerful. The main disadvantage of such an acquisition is that if even a small amount of abrasive substances, such as sand, gets in, the pump quickly fails.

• Such units are very good to use in situations where water intake is carried out with abrasive substances, for example, when cleaning wells. But this is not at all necessary, because the final purification of water can be done at the top, therefore, such devices are quite suitable for serving food needs. For example, a Chinese auger
  

  Sprut 4S QGD 1.2-50-0.37 is made of stainless steel, it pumps to a height of up to 93 m in a volume of 33 l/min, and its price is only 100 USD.

• Unlike wells, for water intake from wells you can use submersible pumps of the “Malysh” type, which have a vibration pumping system, which means they do not require as much maintenance, which increases their service life. But such devices are used at a small distance of the water surface from the ground surface, but they must be recessed to a depth of at least a meter - this allows one to protect against level changes characteristic of wells.

• To pump dirty water from various containers, wells, reservoirs, and the like, drainage units are used that easily pass abrasive substances and other debris through them. In accordance with the purpose, the device is selected according to the design of the impeller. Thus, a multi-channel wheel is used for pumping liquid with abrasive substances, silt or small debris, a single-channel wheel is for larger solid elements, including feces, and an open wheel is for pumping liquid with debris from 30 to 70 mm, such as household waste, fallen leaves, etc. garbage.

Note. Among the drainage units, there are special pumps designed for pumping out feces. The difference is that there is a special shredder that can process not only long-fiber waste, but also household waste such as gloves, towels, and so on.

Related articles:

Installation work

So, we will assume that you have decided on the power of the deep-well pump, that is, you have chosen the one that will ensure uninterrupted water intake, taking into account the static and dynamic level (flow rate) of the well. Now we need to resolve the issue with the drainage line; it can be made in the form of a caisson (a pit near the production pipe) or an adapter.

You also need to immediately determine the location of the reserve tank, sensors and automation - they can be either in the house or in one of the outbuildings, where they can be located both on the surface and in a specially equipped pit.

Most developers, when designing a house, mark a place for a well right on the territory of the building, which is quite convenient for further installation and operation of the water supply. However, the principle of installing a water intake system remains the same, and the same rules are followed everywhere.

Now let's look at the immersion depth, but for this you should already know what the dynamic level of the column in the production pipe is - such indicators are usually given by drillers, or you calculate them yourself. So, the pump body, or rather its upper part, must disappear to a meter depth, especially for wells in sand, where the level may depend on seasonal precipitation (for an “artesian” 30-40 cm is enough, since a constant level is maintained there).

Regardless of the depth of the well, the electrical cable to connect the pump will still be short, so it will have to be spliced. To do this, a special terminal box with 4 inputs and outputs is often provided on the head, as in the photo above, so that you can connect both a three-phase and a single-phase motor here.

However, in most cases, craftsmen prefer a twisted connection, when a heat-shrink sleeve is put on each of the cores, as well as on the cable as a whole, which completely blocks moisture from entering the copper, and therefore eliminates oxidation.

A polyethylene hose with a diameter of 32 mm is clearly used from the deep pump to the distribution unit, and all other wiring is made using polypropylene for soldering, but in some cases metal plastic is used.

The reserve water tank can be of different sizes, but it should be borne in mind that by increasing the capacity of the tank, you reduce the number of engine starts and stops, which significantly extends its service life. For household use, you will not need a container larger than 100 liters.

Note. To further reduce the number of starts and stops, you can adjust the time relay yourself. Thus, the factory settings are designed to stop the pump when the pressure rises to 3 atmospheres, and it starts when the pressure drops to 2 atmospheres. But you can close this gap by setting it to 5 and 1.5 atmospheres, respectively.

Conclusion

In any case, each submersible pump has instructions from the manufacturer for its installation and operation, which must be followed. But it should also be taken into account that well filters and maintenance of the source, which must be cleaned at least once every 3-5 years, play a big role in the quality operation of the unit. You will choose the cleaning method yourself, but it will depend on the size and design of the well.

A well on your property is a great opportunity to have clean water all year round and not have problems with watering and showering. But the aquifer can lie at different depths. For each depth, it is rational to use certain types of pumps. Let's look at the main models that are designed for wells with a depth of 15, 20, 30, 50 and 100 meters.

Introduction to the concept of “well depth”

A well is a small diameter hole in the ground. Its purpose is to reach the aquifer and ensure the rise of water to the top.

In turn, aquifers are different:

1. First layer- the shallowest, lies literally under our feet and is filled with rain and melt water. Its purity is very questionable, so this water can only be used for irrigation. In addition, it will constantly dry out, if it has time to form at all.
2. Second aquifer– located on sandstone. Its depth is from 7 to 50 meters. The water here is cleared of impurities by a layer of sand, but is still not of sufficient quality for consumption.
3. Third – artesian layer– located on limestone and has a depth of 30 to 200 meters. The water here is saturated with mineral salts and purified from any microorganisms and dirt. In some areas it may be under pressure and “gush out”.

Familiarize yourself with the principles of operation of water wells.

Drilling “for sand” and “for limestone” are two types of wells. Each of them has its own advantages and disadvantages.

Well "on sand"

Pros:

• Low cost of drilling operations. Some owners of personal plots even manage to reach the aquifer on their own. This is a physically difficult, but realistic task.
• It takes from 1 to 5 days to drill and equip a well.
• You can use water immediately after completion of drilling work.
• No license required.
• A less powerful pump is needed.

What a dry stream is in landscape design is outlined.

Minuses:

• Low debit and, as a consequence, the impossibility of pumping out large (from 1 cubic meter per hour) volumes of water;
• If the well is idle for a long time, it silts up and needs to be cleaned;
• Poor water quality.

Well “for limestone”

Pros:

• Ideally clean water;
• Service life – at least 50 years;
• Constantly large volumes of water.

Minuses:

• High cost of drilling work;
• Expensive well development;
• High-quality and expensive pumping equipment is required;
• License required.

Equipment for a 30 meter well: how to choose

Depending on the depth, you need to decide. Most often in practice there are wells with a depth of 30 meters, i.e. a well “for sand”. Here are a few parameters that the device must meet in order to efficiently and uninterruptedly supply the garden plot with the required volume of water all year round.

The most common models for such wells have a diameter of 4 inches. Here are some of them:

• "Aquarius". Good value for money. Diameter from 110 mm, pressure and flow depend on the customer’s needs. For example, the “Aquarius” BTsPE 1.2-32U has a maximum lift height of 56 m, a flow rate of 9.4 m 3 /h and a power of 1.3 kW. “Aquarius” BTsPE 0.5-50U is capable of delivering a maximum head of 75 meters. This means that with a well depth of 30 meters, it will provide a fountain 40 meters high from the ground directly above the well. Which roughly corresponds to four atmospheres of pressure. Its feed is 3.6 cc. m. per hour.
• German company Grundfos. Produces deep and borehole models of minimal diameter and high productivity. Their price is several times higher than their Chinese counterparts, but the quality is corresponding. The SQ2-85 model has a diameter of 76 mm (3 inches) and produces 109 meters of head “uphill”. Its supply is 2 cubic meters of water per hour. Less powerful models are Grundfos SQE 2-70 and SQ3-55 with the same supply and pressure of 70 and 75 meters, respectively.
• Italian submersible models Pedrollo. They have a diameter of 100 mm and high performance characteristics. Pedrollo 4SR4m/14-P is equipped with a check valve and dry-running protection. Its head is 88 meters with a flow rate of 4 cubic meters. m. per hour.
• Pump QS4X.2-12 220v (ZDS). Perfect for a well 30 m deep. It has the following characteristics: pressure - 77 meters, flow rate - 2.4 tons per hour and power 5.5 kW.

Pumps for wells of other depths

The aquifer can lie either above thirty meters or much deeper. Moreover, if you are looking for artesian water, which does not need to be purified from impurities (if there is no excessive mineralization).

• Well 15 meters. To lift water from a well, 15 meters is sometimes used with an ejector. The advantages of this option are that the equipment is always at hand. Disadvantages - low efficiency. Therefore, a submersible type apparatus will be correct for such a shallow depth. Vibrating pumps "Aquarius", "Malysh", Sprut SCM3 and Vodomet Gileks can be used for wells with a diameter of more than four inches. They provide greater flow and pressure. You just need to make sure that their excess power does not cause the well to dry out and, as a result, equipment failure.

• Well 20 meters. Can get by with the same models as the previous one. It’s just that its pressure in the house or at the end of the watering hose will be half an atmosphere (0.5 m) less.
• 50 meter well. Places more severe demands on pumps. These are no longer just submersible vibration-type models, but specialized centrifugal models. These include Grundfos SQ2-85, Sprut 4S QGD1.8-50-0.5, Gileks 60/72 (or 60/92) Water Cannon, Pedrollo 4BLOCKm2/13 and some other models. Their power is enough to lift the required amount of water to a height of 50 meters with a pressure of 2-5 atmospheres. You will find detailed information about the plastic caisson for wells.
• Well 100 meters. Even more demanding on equipment. The main reason is the difficulty of lifting the pump for maintenance and repair. Therefore, here you need to forget about cheap Chinese models and weak domestic manufacturers. Only Grundfoss and Pedrollo. Grundfos SQ2-115 is capable of lifting water from the bottom of such a well and squeezing it out with a pressure of 15-50 meters. Pedrollo 4SR2m/27-P has similar parameters and has an even higher maximum head of 173 meters.

To find out how to choose a pump for a 30-meter well, it is necessary to consider the technical characteristics of existing pumping units. They differ in performance level, motor power, purpose and price. In this case, the depth of the well is taken into account.

To put it on the surface, you need to focus on the following indicators:

1. Well depth. The technical data sheet of the unit indicates the value of this indicator at which the electric pump can operate. To find out the height of the well, you need a cable or rope.
2. Water consumption. Taking into account the type of pump, this figure can be in the range of 20-200 l/min. The calculation is made taking into account the number of family members and the volume of fluid consumed per day. If there are 4 people in a family, then the power of the unit should be 30-50 l/min. The well will supply water if you install a “Malysh” or “Whirlwind” pump. If a well is needed not only for the house, but also for the garden, a unit of greater productivity will be required. To water the garden, you will need a pump with a capacity of 50 l/min.
3. The productivity of the well itself. To roughly estimate the volume of liquid that will be extracted over a certain period, the time of pumping water from the well is recorded. In this case, the period of filling the empty well is taken into account. The value of the last indicator is divided by the last number. The result obtained is the performance of the hydraulic structure.

In order for the well to operate smoothly, a unit is installed taking into account the liquid pressure. This indicator is important for the water intakes under consideration. To determine it, you need to know the depth level of the well. 30 is added to this value. The result increases by 10%. If the well has a depth of 30 m, then the head height is calculated as follows: 60 m + 30 + 10% = 66 m. For such a well, it is better to use the “Whirlwind” model with a head of 70 m.

A pump for a 30-meter well is selected taking into account the diameter of the well trunk. Based on this indicator, the power of the pumping unit itself is determined. If the drilling was carried out by specialists, then this value is indicated in the structure’s passport.

Otherwise, the diameter is measured independently. This value is calculated in inches (1 inch=2.54 cm). Many pump units are designed for 4-inch wells. You need to select equipment taking into account the price factor. Some cheap models are not inferior to their expensive counterparts.

Approximate calculations

It is recommended to select a unit for a thirty-meter well, taking into account its performance (Q) and pressure (N). By productivity we mean the amount of water that the supplied unit can pump over a certain time period.

Pressure is the energy imparted by the pump to the pumped water. If the dynamic water level is 12 m, and the well is located 25 m from the serviced object, then the water flow per hour will be 3.5 m³.

The pumping unit that supplies water to the house must have a minimum pressure of 6 m. The height of the house is added to this value. The result is multiplied by the water resistance coefficient (1.15). In this case, the value of the indicator will be 14.4 m.

The distance from the water level to the ground surface plus the distance to the object is added to the calculated pressure. For every 10 m, 1 m of head is lost. In the case under consideration - 2.5 m. This number is added to the total amount. Value Н=14.4+12+25+2.5=53.9 m. In the case under consideration, a pump with a pressure of 53 or 54 m will be required. To ensure the required flow rate, a hydraulic accumulator is additionally installed.

Types of units

The surface unit Speroni SVM-100 is suitable for the well in question. It pumps 3 m³ per hour, with a pressure of 53 m. The diameter of the equipment is within 96 mm, so it can be used for wells with a circumference of 100 mm. When purchasing a pumping unit, it is recommended to find out its technical characteristics.

If the barrel diameter is 100-125 mm, then you can install a submersible pump up to 4 inches. For a well of the considered depth, you can use centrifugal pumping units that have a double check valve.

The pump must have a multi-stage design. The blades mounted on the shaft must have a special shape for a 30 m well. Taking into account the diameter of the trunk, the “Aquarius” model is suitable for the well in question. Its power is 2.3 kW and its productivity is 4 m³/h.

The pump pressure must be such that the pressure does not drop at maximum liquid flow. This pressure is 3 atm. and it is set by the pump control relay. For the well in question, a Malysh, Aquarius or Grundfos pump is suitable. These units are characterized by a minimum diameter that is capable of providing a pressure of 75-120 m. Their productivity ranges from 2-6 m³/h.

Models from the German manufacturer Grundfos provide pressure from 75-120 m (minimum diameter). The productivity of pumping units ranges from 2-6 m³/h. A Pedrollo submersible pump can be installed. It has 2 check valves, protecting the unit from running dry. The motor power is 5.2 kW, and the maximum pressure is 75 m. The liquid flow rate exceeds 1.5 m³/h. Pumps from this manufacturer of the QS4X-12 220 V (ZDS) series provide a water pressure of 75 m. The power is 5.2 kW.

It is recommended to purchase the pump after completing the technical documentation. It specifies the parameters that the equipment must have. The choice of unit is made taking into account the following data:

1. Mains voltage.
2. The design of the device is suitable for water intake of the required depth.
3. The fluid pressure created by the unit.
4. Maximum immersion depth of equipment.
5. Permissible dynamic and static water level. If the liquid is not pumped out, it will remain at a static level. The dynamic indicator is determined if the required volume of water is consumed from the water intake within 24 hours. The value of this indicator is affected by the debit of the well.
6. Characteristics of the filter, taking into account the size and content of impurities in the liquid.
7. Pump performance. The value of this indicator should not be greater than the debit of the hydraulic structure. Otherwise, the pump will quickly pump out the water and will run dry. The electric motor will fail.

When choosing a pumping unit, it should be taken into account that its pressure must be greater:

• height of excess of the point of delivery to the object;
• the value of the dynamic indicator;
• overcoming pipe resistance;
• maximum permissible pressure in the system.

Water consumption depends on the intake points connected to the unit. If there is a well of unknown depth on a plot of land, it is measured before purchasing a pumping unit.

To do this, use a rope with a weight at the end. Such a device is lowered into the well. Then measure the distance to the wet mark with a tape measure. Installation of a water intake well with installation of a pump is a necessary moment in the arrangement of any summer cottage.