Pumps to increase water pressure: types, how to choose, installation technology + connection diagrams

The best centrifugal pumping stations

Such models are characterized by high performance, which is provided by a special mechanism for lifting water.Penetrating between the blades, it receives the necessary acceleration due to their rotation. Centrifugal pumps are chosen if it is necessary to create a stable pressure and the full operation of several consumers.

Grundfos MQ 3-35

5

★★★★★
editorial score

100%
buyers recommend this product

See review

The main features of the model include ample opportunities for automatic adjustment of operating modes. When the water level in the system drops, the device stops functioning and tries to turn it on every 30 minutes for the next day.

The maximum pressure is 35 meters, the suction depth is 8 m. Small dimensions and silent operation allow you to place the unit in any convenient place, including in a residential area.

Advantages:

• full automation;
• low noise level;
• pressure and water flow control;
• check valve;
• long service life.

Flaws:

high price.

Grundfos MQ 3-35 is designed for pumping water from wells or wells. The unit can be used in country or garden plots, in farms.

Gardena 5000/5 Comfort Eco

4.9

★★★★★
editorial score

95%
buyers recommend this product

The main feature of the model is high productivity - 4500 liters per hour. It is provided thanks to the engine power of 1100 W and a maximum pressure of 5 atmospheres. The pump is equipped with a non-return valve and a pre-filter to prevent water return and coarse foreign particles from entering the pump.

Thanks to the adjustable eco-mode, the unit is able to save up to 15% of electricity. The owner can also choose to manually or automatically adjust the basic settings. For this, a convenient multi-function switch is used.

Advantages:

• saving electricity;
• high performance;
• powerful engine;
• durability.

Flaws:

installation complexity.

Gardena Comfort Eco can be used to establish a water supply system in a private house. The performance of the station is enough to solve any business problems.

Denzel PS800X

4.8

★★★★★
editorial score

88%
buyers recommend this product

Thanks to the power rating of 800 W, the model is capable of lifting water to a height of up to 38 meters. The capacity of the station is 3200 liters per hour. This is enough to ensure a stable and powerful pressure at several flow points at the same time.

The device is equipped with a pressure gauge that allows you to control the pressure in the system. The case is made of stainless steel that promotes long work in the conditions of the increased humidity. Wear resistance of the impeller is guaranteed by multi-component plastic, resistant to friction and deformation.

Advantages:

• durability;
• high performance;
• powerful engine;
• work in automatic mode;
• dry run protection.

Flaws:

installation complexity.

Denzel PS800X should be purchased for pumping water in residential water systems. An excellent choice for owners of cottages, farms or summer residents.

Marina CAM 88/25

4.7

★★★★★
editorial score

86%
buyers recommend this product

The model is distinguished by the presence of a 1100 W bipolar motor with overload protection. The suction depth of the device is 8 meters, the volume of the complete tank is 25 liters. The unit is able to automatically maintain the required pressure in the system and does not require special maintenance.

Small dimensions allow you to install the station in any convenient place, and low noise level at work facilitates installation in close proximity to living quarters. A capacity of 60 liters per minute is enough to meet the needs of a large family and household needs.

Advantages:

• powerful engine;
• bulk tank;
• high performance;
• cast iron body;
• long service life.

Flaws:

heating during operation.

Marina CAM is easy to install and operate. It can be used for the stable pumping of water in large volumes from wells, wells or ponds.

When do you need a booster pump?

The water pressure at the inlet of the internal water supply in a private house with individual water supply is determined by the settings of the main automation element - the pressure switch, the highest standard threshold of which, when manually adjusted, does not exceed 5 bar. Therefore, it makes no sense to install a booster pump in a private house with an autonomous water intake - with an insufficient supply volume, it is cheaper and easier to install a large-capacity storage accumulator. A similar picture is observed in apartment buildings - there the water pressure is fixed and maintained at the desired level by utilities. But sometimes in apartments and private houses the following situations arise when it is necessary to install booster electric pumps in the water supply system:

a). With autonomous water supply, water resources are taken from borehole or well sources, using submersible well, borehole electric pumps or surface installations. Each water supply unit has certain technical characteristics, the main of which are pressure (indicated in meters) and pumping volume (in passports, the value is usually indicated in cubic meters per hour).

The pressure is the determining criterion for the indicator of the distance to the point of water consumption and the depth of immersion of the unit, usually 1 m is equated to the same 1 m of a vertical column and 10 m horizontally. If the well is located at a great depth or the distance to the house is large, the pressure created by a low-power electric pump (errors in the calculations when choosing, a decrease in performance during operation, the impossibility of replacing a worn-out unit with a new one) is not always enough to transport an acceptable volume of water per unit of time for the required distance. In this situation, a booster electric pump can be installed in the external line.

Rice. 4 Vortex electric pump and its principle of operation

b). But more often, booster pumps for cold water supply are installed inside the house for water supply to electrical and sanitary equipment in cases where the liquid pressure at the water intake points from the centralized main is too low or the private house has a high number of storeys with a branched and extended water supply line. In a home microclimate, their service life is significantly longer than on the street, in addition, the devices require an installation built into the pipeline, which is technically impossible to achieve on an external underground pipeline or in a narrow distribution (inspection) well.

c). Violation of their obligations by public utilities leads to the fact that the pressure in apartments (especially on upper floors or during peak hours) may be too low for the normal functioning of sanitary appliances, household appliances, and household needs. In this situation, the owner can install a low-power pump to increase the pressure in the water supply (mainly at the inlet of household appliances), which starts its work when water is consumed.

Features of installing a device for pressure in the water supply

The installation location of the pressure boosting equipment depends on the specific situation. To ensure the normal operation of the faucet and shower head, it is enough to mount it at the outlet of the storage tank. For devices that are more demanding on pressure (washing machine, dishwasher, water heater), it is better to install the pump in front of them.

However, installing several low-power pumps at once is not the best option. In this case, it is worth installing more powerful models that can stabilize the pressure at high flow rates.

The installation of a pump to increase the pressure in the water supply of an apartment or a private house is performed in the following sequence:

First, mark the pipe on which the equipment will be installed, taking into account the length of the device and fittings.
Then the water supply is shut off in the room.
After that, in the marked places, the pipe is cut.
At the ends of the pipeline, an external thread is cut.
Then adapters with an internal thread are mounted on the pipe.
Fittings from the kit with the pump are screwed into the installed adapters

For better sealing, wind FUM tape around the thread.
An increasing device is mounted, while it is necessary to follow the instructions of the arrow on the body of the device, showing the direction of water flow.
After that, from the electrical panel to the device, you need to stretch a three-core cable and, preferably, make a separate outlet, and it is better to connect the device through a separate RCD.
Then the pump must be turned on and its operation checked, paying attention to the absence of leaks at the joints. Tighten the fittings if necessary.

Proper installation of the device will provide water needs for many years. Adhere to the following recommendations during the installation of equipment:

• in order for the pump to work longer, it is better to install a mechanical filter at the inlet to it. So you can protect the device from getting into it unwanted particles;
• it is better to install the unit in a dry and heated room, since low temperatures can freeze the liquid in the device, which will disable it;
• vibration from the operation of the equipment, over time, can loosen the fasteners, causing a leak, so sometimes you need to check the connections for leaks.

A properly selected and correctly installed device can solve the problem of low pressure in the water supply.

Connection diagram - recommendations

When determining the location for the optimal location of the pump, it is guided by the following considerations:

1. For the correct operation of household appliances in the form of a boiler, washing machine or dishwasher, the pump is placed directly in front of them.
2. If the house has a storage tank located in the attic, pumping is placed at its exit.
3. As with the installation of circulation units, in the event of an electric pump failure or removal for repair and maintenance work, a bypass with a shut-off ball valve is provided parallel to it.
4. When installing a pump in apartment buildings, it is likely to leave residents without water in the riser, dramatically increasing the volume of its consumption when the pumping is turned on. In this situation, it is necessary to provide for the placement of storage tanks in the apartment, which are more practical to hang from the ceiling.
5. Many, when installing more powerful units in a line, do not get the desired result indicated in the passport data.Not knowing the laws of hydrodynamics, they do not take into account the increased hydraulic losses in the pipeline with an increase in the volume of pumped liquid - to reduce them, it is necessary to change the pipes to a larger diameter.

Rice. 14 Installation of booster pumps in the internal water supply

Booster electric pumps are usually installed in apartments or private houses when using public water supply networks, whose services do not fulfill their obligations to create working pressure in the system. Standard wet rotor household units increase the pressure by an average of 0.9 atm. To obtain a higher figure, it is necessary to install a centrifugal electric pump, a pumping station or an installation with frequency control of the impeller rotation speed (the best, but too expensive option).

Surface sewer pumps - the best models

Temporarily or permanently living in a private country house, most people are still not going to give up the benefits of civilization in the form of a warm toilet. However, in order to be able to do this, you need to regularly empty the waste tank - otherwise it will overflow rather quickly. This is where special surface sewer pumps come to the rescue. They can work not only with clean water, but also with a liquid that has a large amount of impurities - including drainage, sewage and waste water. Let's talk about some of the most successful models.

1. SFA SANITOP

A very successful model of a surface pump for sewage. One of the advantages is good performance - as much as 6.6 cubic meters per hour. This allows you to easily and quickly deal with large volumes of dirty water.It's nice that the maximum pressure is quite large - five meters. This allows you to remove waste both from the house and from deep drainage pits. Two water intake points can be connected to one pump, which is very convenient and practical. An additional plus is the high level of security. After all, the model is equipped with an idle protection function, which means it will not fail due to work in vain. This is facilitated by float control of the water level - simple but reliable. Many users like that the installation is quite quiet - only 46 dB. So, this surface pump for dirty water will definitely not disappoint.

Advantages:

• high throughput;
• low noise level during operation;
• high build quality and materials;
• two connection points;
• simple operation;

Flaws:

high price.

2. Grundfos Sololift 2 WC-1

Looking for a surface fecal pump that delivers high performance? Pay attention to this one. It is characterized by high performance - almost 8.94 cubic meters per hour

With a maximum head of 8.5 meters, the pump can operate both above ground and below ground level.

The 10-litre hydraulic tank improves working comfort, and a special cutting attachment ensures that blockages do not occur. It's nice that, despite the excellent performance, the pump weighs quite a bit - only 7.3 kg.

Advantages:

• quality assembly;
• good cutting nozzle;
• perfectly copes with the assigned tasks;
• excellent design.

Flaws:

serious noise at work.

3. SFA SANIVITE

It may not be the best surface pump for dirty water, but it certainly is one of them.One of the advantages is the low noise level during operation - 42 dB, which can be called a very good result. It can pump out up to six tons of liquid with impurities per hour, and this is probably enough even for a large family and a large household

It is also important that one pump has up to three water intake points - this is very important, as it allows you to connect, for example, a bathtub, toilet bowl and sink to it, without spending extra money on buying several devices. It's nice that the pump works with hot water - up to +60 degrees, which not all analogues can boast of

Advantages:

• good performance;
• three water points;
• silent operation;
• ease of installation.

Flaws:

Due to the lack of a filter, an unpleasant odor arises during a long space.

Ways to increase the indicator for dwellings connected to the central water supply

There are several basic ways to increase the pressure of water in pipes connected to a central water supply.

With a pump

One of the simplest ways to increase the pressure in the pipes is to install an additional pump into the system:

1. The most important thing is to choose a pump with suitable parameters. The choice of model is influenced by the length of the pipeline, the thickness of the pipes, the number of floors in the house.

   The power of the device necessary for a noticeable increase in pressure depends on these parameters. It should be borne in mind that the more powerful the pump, the more expensive it will cost.

   A cheap model is only suitable in rare cases, so you should not save on this device, otherwise a noticeable increase in pressure will not work.

2. The pump is mounted in front of the pipes entering the room. To do this, a part of the pipe is cut out, reinforcement is attached to the ends. The pump must be screwed to the pipes on both sides, following the direction indicated in the instructions.

Hydraulic accumulator

A hydraulic accumulator is a device equipped with a tank into which pumping and subsequent water intake takes place during the day. As a rule, the accumulator is installed immediately when the pipeline is assembled, however, if it was not installed initially, its connection can significantly increase the water pressure.

It happens that the accumulator was initially chosen too weak. In this case, replacing the device with a more powerful one will also help solve this problem.

How to do it:

1. To install the device, you need to choose the right place. It should be spacious, especially when using a large tank.

   Also take into account that the tank must be accessible for inspection in case of malfunction, so that there must be space around it. The base must be strong and absorb vibrations.

   

   

   

   

   

   

   

   

2. You can connect the device to the water supply using a fitting. The fitting must have five outlets, since a pipe, a pump, a pressure gauge and a relay will need to be connected to the device.
3. The meter and relay are connected using threaded connections. All connections must be sealed. The relay is also connected to the pump and the network.
4. After installation, make sure there are no leaks. To do this, a test run of water is made, and the connections are checked. They must remain dry. Otherwise, it is necessary to carry out the sealing again carefully.

By replacing some systems in the water supply

Improper assembly of water pipes can significantly affect the water flow in a negative direction. The aging of the pipes and a large amount of deposits in them also leads to a drop in the pressure force.

If the assembly was carried out independently, without the help of specialists, it would not be superfluous to check once again the correct selection of pipes and connections.

A large number of corner joints and branches, pipes that are too narrow in some sections will inevitably steal some part of the watercourse, reducing the pressure at the outlet.

If all other methods do not give a significant increase in pressure, you should contact the specialists in order to rebuild the pipeline.

The best models of water pumps for increasing pressure in an apartment

Booster pump Wilo

If you need to install a reliable pump to increase the water pressure in the apartment, you should pay attention to Wilo products. In particular, the PB201EA model has a water-cooled type, and the shaft is made of stainless steel.

Wilo PB201EA wet rotor pump

The body of the unit is made of cast iron and treated with a special anti-corrosion coating. Bronze fittings provide a long service life. It is also worth noting that the PB201EA unit has silent operation, has automatic overheating protection and a long motor resource. The equipment is easy to mount, however, it should be remembered that only horizontal installation of this device is possible. Wilo PB201EA is also designed for pumping hot water.

Grundfos water booster pump

Among the models of pumping equipment, Grundfos products should be highlighted. All units have a long service life, withstand fairly large loads well, and also ensure long-term uninterrupted operation of plumbing systems.

Grundfos self-priming pumping station

Model MQ3-35 is a pumping station that can solve problems with water pressure in pipes. The installation is controlled automatically and does not require additional control. The design of the unit includes:

• hydraulic accumulator;
• electric motor;
• pressure switch;
• automatic protection unit;
• self-priming pump.

In addition, the unit is equipped with a water flow sensor, which ensures high efficiency in operation. The main advantages of the station include high wear resistance, long service life and silent operation.

Please note that the MQ3-35 unit is designed for cold water supply. Booster pumps are also equipped with relatively small storage tanks, which, however, are enough for domestic tasks.

An operating Grundfos pumping station in a water supply system

Comfort X15GR-15 air-cooled pump

In order for the circulation pump for water supply to work both in manual and automatic mode, we advise you to pay attention to the model of the Comfort X15GR-15 unit. The body of this device is made of stainless steel, so the unit is not afraid of moisture and can function in any conditions.

Comfort X15GR-15 air-cooled pump

An impeller is installed on the rotor, which provides excellent air cooling. The unit has a compact size, does not require special maintenance, and also consumes electricity economically. If necessary, it can be used to pump hot water streams. The disadvantages of the installation include the loud operation of the power unit.

Pump station Dzhileks Jumbo H-50H 70/50

The Jambo 70/50 H-50H pump station is equipped with a centrifugal pump unit, a horizontal accumulator and a sweat pressure switch. The design of the equipment has an ejector and an asynchronous electric motor, which ensure stable operation of the plant.

Jumbo 70/50 H-50H

The housing of the home water pumping station has an anti-corrosion coating. The automatic control unit ensures simple operation of the equipment, and the built-in overheating protection eliminates the possibility of damage to the unit. The disadvantages of the unit include loud work, and there is also no protection against "dry" running. For the device to function properly, it is recommended to install it in a room with good ventilation and low temperature.

Jemix W15GR-15A

Among the models of booster pumps with an air-cooled rotor, Jemix W15GR-15A should be highlighted. The body of the unit has increased strength, since it is made of cast iron. The components of the electric motor design are made of aluminum alloy, and the drive elements are made of highly durable plastic.

Jemix W15GR-15A

Pumping equipment is characterized by high performance, and can also be operated in wet areas. Manual and automatic control of the unit operation is possible. If necessary, the unit can be connected to hot water supply. Significant disadvantages include rapid heating of the elements of the device and noise.

Some Helpful Tips

Not always a booster pump is needed to solve the problem with low water pressure in the system. To begin with, it does not hurt to diagnose the condition of the water pipes. Their cleaning or complete replacement can restore normal pressure without additional equipment.

To understand that the problem is in the poor condition of the water pipes, sometimes it is enough to ask neighbors who live in apartments on the same floor or higher. If they have normal pressure, you almost certainly need to clean the pipes. If the picture is the same for everyone, there may be more serious problems affecting the entire plumbing system of the house and even the area.

In high-rise buildings, water sometimes simply does not flow to the upper floors. This requires high-powered and rather expensive equipment. It makes sense to cooperate with other tenants to share the costs. It is a good idea to demand that the organization that receives the payment for the water supply solve the problem, since it is they who must ensure the supply of water to the consumer.

The lack of water on the upper floors is a violation of fire safety requirements

When communicating with the water service provider, it is worth paying attention to this point and mention the possibility of litigation due to non-compliance with the law

It is best to entrust the installation of equipment in an apartment building to a full-time plumber of the management company. He is also more familiar with the system, and will be held responsible in case of leaks or breakdowns caused by poor-quality installation of equipment.

Manufacturers

Of course, European companies are considered the best manufacturers of pressure boosting pumps. However, domestic companies also demonstrate decent results, especially in collaboration with Chinese ones.

The German unit "Wilo PB-201EA" is considered the best water pump produced in this country. It provides for both manual and automatic control, has a capacity of 3.3 cubic meters per hour and pressure 15 meters.In addition, it functions seamlessly in hot water and is able to withstand temperatures up to +80 degrees.

The Russian-Chinese booster pump "Jemix W15GR-15A" occupies a leading position in the "dry rotor" category.

The Danish device "Grundfos UPA 15-90 (N)" is equipped with a stainless steel case and an asynchronous motor. It can operate either in manual or automatic mode. The pressure corresponds to 8 meters, and the flow is 1.5 cubic meters per hour. It is very economical, because the power consumption reaches only 0.12 kilowatts. In addition, it does not make a lot of noise, is very resistant and has protection against overheating and dry running.

"Comfort X15GR-15" is one of the best budget water pumps. It is made in Russian-Chinese production and has the following parameters: productivity - 1.8 cubic meters per hour, pressure - 15 meters. The device functions both in manual and automatic modes and is mounted horizontally with additional fixation to the wall. The maximum possible water temperature reaches 100 degrees, which means that it can be used in both hot and cold water supply.

Among the pumping stations, the Danish booster station "Grundfos MQ3-35" with automatic control is distinguished. The suction depth reaches 8 meters, the head is 34 meters, and the flow rate is 3.9 cubic meters per hour. The station is equipped with a self-priming pump, an electric motor and a hydraulic accumulator.

Tips

• Before buying a pump, it is still worth clarifying what condition the system is in. For example, a divider on a faucet must be cleaned of dirt, for example, with citric acid.If this is not done, then the accumulating calcium salts can critically reduce the working openings, which will lead to negative consequences. It is also recommended to go to the neighbors and find out if they have the same problems. In the case of a positive answer, it becomes clear that the reason is more global, and it cannot be solved by simply buying a pump.
• It is also worth remembering that the situation becomes critical when the pressure drops below 1-1.5 atmospheres. The normative indicator corresponding to the operation of household appliances is from 2 to 3 atmospheres, and the norm for pipes is 4 bar. If the pressure in the tubes is less, then the devices turn off.

• If a pressure measuring device combined with a filter is placed in advance in the inlet line, it will always be possible to quickly check the pressure level, as well as get rid of clogging problems.
• When the question of cost is important, then, of course, you should choose a pump with manual control, which is also distinguished by reliability. However, such models consume electricity uneconomically and are not very convenient to use.

To increase the life of the pump, it is recommended to install a mechanical filter at the inlet, which will prevent clogging of the device with hard deposits.
It is important to install the booster unit in a dry and heated space. If the temperature drops below zero, the water will freeze and the apparatus will break down.

In a situation with too high a temperature, it will overheat.

• Any pump, even one with outstanding performance, will vibrate during operation. This means that after some time the device may become loose.Therefore, you should periodically check the condition of the fasteners and, if necessary, tighten them.
• Flexible fittings and tubes significantly reduce pump performance and adversely affect the reliability of connections. If possible, they should be avoided.
• A circulation unit to increase pressure is worth buying if there is water in the pipes, but its pressure is too weak. To eliminate the lack of 2-3 bar, one model is enough, but in some cases two pumps will have to be installed. Pumping stations should be chosen if there is no water in the tap at all, but lower in level, that is, the neighbors below or in the room located under the “problem room” have it.

• It is worth remembering that circulation models are mounted in the only correct position, which is indicated on the packaging. If you install the device by mistake, then it will either perform its work poorly, or it will not start at all. It is not recommended to connect pumping stations on your own.
• Unfortunately, many people who mount the pump themselves do not carefully read the instructions provided by the manufacturer. As a result, they install the device in the wrong position, connect it incorrectly and experience significant operational problems.

You can learn how to install a pump that increases water pressure in an apartment from the video.

The best pumping units to increase water pressure

Grundfos

The most convenient, high-quality and reliable, simply the best pump with a wet rotor is considered to be Grundfos UPA_15-90 (N). Manufactured in Denmark, Grundfos has a durable cast iron stainless steel body and can handle a wide range of pressures. Several modes of operation are available in the control, selected by the consumer at will.Grundfos can raise water up to eight meters. At the same time, the inlet pressure will be a minimum of 0.2 bar, and the electricity will be spent on a high level - only 0.12 kilowatts.

Grundfos pump

The noise figure is an important point for a pump installed inside a small apartment. For Grudfos, it has a value of no more than 35 decibels. The pump is light, easy to install, durable (it can work for at least ten years, according to the established official service life).

Wilo

The German Wilo PB-201EA is a powerful wet-rotor unit that has the ability to create a water column of up to fifteen meters with a capacity of 3.3 m3 / h. The positive aspects of the operation of this pumping equipment:

• materials used - cast iron, cataphoretic coating, bronze, pipes, plastic wheel;
• operating modes - at the user's choice (there is a flow sensor for automatic mode and a switch for manual start);
• the temperature level of the liquid used is up to +80 C.

Wilo

Jemix

The Jemix W15GR-15 A dry-rotary water pump for a private house with a cast-iron body has a convenient auto-start, which turns on when the water flow rate is from 0.09 to 0.12 m3 per hour. At the same time, there is protection against dry running, and pressure is created up to 15 meters high. The short service life (at least three years with a warranty repair within twelve calendar months), stated in the specification for the device, can actually be increased if it is not used at extremely high temperatures (the maximum liquid pumped through this pump can have a temperature of 110 C).

Jemix works without contact with the distilled liquid, since the motor is cooled directly by the built-in fan. Horizontal wall mounting possible.

Jemix

"Jilex"

Gileks "Jumbo" 70/50 N-50 N is not just a booster pump for plumbing in a private house. This unit is a real mini-pumping station with a capacity of more than four cubic meters per hour (4.3 m3 / h), a fifty-meter head, a nine-meter suction depth and its own large tank that holds up to fifty liters of liquid. If you plan to install a pressure-boosting mini-pumping station for cold water supply, then Dzhileks will suit you, since the temperature limit of the water pumped by this device is a maximum of thirty-five degrees Celsius above zero.

Gilex

In the video, additionally about centrifugal and vortex pumps:

Briefly about the main

Pumps that increase the pressure of water in the water supply system have a different design and corresponding application. When choosing, you should be guided by both the requests of the owners of the dwelling, the parameters of the pumping unit, and the indicators of the actual water pressure in the pipes. Not the last role is played by the budget allocated for the purchase and the persistence of the problem with insufficient water pressure.

A little more attention!

The best wet rotor pumps for increasing water pressure

Grundfos UPA 15-90 (N) is the absolute best water pump for boosting pressure

The Danish Grundfos UPA 15-90 (N) unit is equipped with a cast iron (stainless steel) body, an asynchronous motor, a flow sensor, and a terminal box. The stator and rotor are separated by a sleeve. During installation, the shaft is set horizontally.

Functioning is carried out in manual or automatic mode. Characteristics: supply 1.5 m3/h, head 8 m, liquid temperature from +2 to +60 °C, pressure min at the inlet 0.2 bar.

Pros:

• efficiency: power consumption is only 0.12 kW;
• low noise figure - no more than 35 dB;
• resistance to wear and corrosion: the impeller is made of composite, bearings and shaft are made of aluminum oxide, safety sleeve is made of stainless steel;
• compactness (installation length - 16 cm) and lightness (weight - 2.6 kg);
• protection against overheating (by pumped liquid) and dry running (in AUTO mode);
• high build quality, easy installation, ease of use;
• reliability and durability: warranty period - 36 months, operation - from 10 years.

Minuses:

• not cheap: buying a Grundfos UPA 15-90 booster pump is available for 5.3 ÷ 7.8 thousand rubles, Grundfos UPA 15-90 N - for 11.0-12.6 thousand rubles;
• expensive post-warranty repairs.

Wilo PB-201EA - the best pressure boosting water pump in Germany

The German unit Wilo PB-201EA has: a capacity of 3.3 m3 / h, a head of 15 m, a power consumption of 0.34 kW. The design includes a cast iron body with a cataphoretic coating, a plastic wheel, bronze pipes and a stainless steel shaft.

For manual operation, a mode switch is provided, for automatic operation, an additional flow sensor is provided. The latter is triggered at a flow rate of at least 2 l/min.

Pros:

• high maximum liquid temperature - up to +80 °С;
• low noise level - maximum 41 dB;
• absence of materials unstable to corrosion;
• protection against overheating and dry running; a fan is provided to cool the motor;
• simple installation, operation and maintenance;
• long service life - 10 years with a 1-year warranty;
• adequate cost: you can buy a Wilo PB-201EA booster pump for 7.9÷12.7 thousand rubles.

Minuses:

• installation is carried out only horizontally with fastening to the base;
• relatively large dimensions (22 × 18 × 24 cm) and weight (7.5 kg).