Rating of the TOP 16 best pumping stations for a dacha and private home: which one to choose, characteristics, manufacturers, pros and cons

Design features of the equipment

Existing pumping stations differ in design, since models are produced for domestic and industrial use. Powerful devices use wide frames. Models with a protected electric motor are suitable for dachas, but special features are taken into account.

1. Hydraulic accumulator type.
2. Dimensions of the structure.
3. Pressure gauge and other instruments.
4. Volume of the container for storing water.
5. Type of pressure switch.
6. Pumps are installed in the front, however there are exceptions. Surface units are the most common, submersible stations are considered less frequently.

What is better: a pumping station or a submersible pump?

For autonomous water supply at the dacha, in addition to pumping stations, submersible models are considered and it is necessary to analyze all their features. The first and second options are suitable for supplying water, but the following nuances are taken into account:

1. Distance to the source.
2. Well diameter.
3. Water purity.
4. Pressure level.
5. Pump installations are more common because they demonstrate stable operation. They are more convenient to maintain. Submersible pumps, in turn, are effective in the industrial sector, where water is extracted from deep wells and large volumes are required.

Selecting a model based on specific characteristics

When a person is faced with choosing a product, he will learn about many characteristics that affect the cost. Manufacturers work according to an individual strategy, but basic indicators are taken into account:

1. Tank size.
2. Water pressure.
3. Operating power.
4. Mains voltage.
5. Water intake depth.

Calculation of pump performance

Before purchasing products, a performance calculation is made. For this purpose, the chemical composition of wastewater and the amount of precipitation are taken into account. An on-site specialist determines the height of the liquid rise. The pump must cope with the increased pressure. In populated areas, this parameter is unstable, so there is a large load on the electric motor. The average model with a power of 1200 watts provides a throughput of 4 cubic meters per hour. If the diving depth is less than 10 meters, 1000 watt equipment is enough. Compact models are produced with an average power of 800 watts.

Maximum water intake depth

Pumping stations are capable of operating in wells of different depths. The standard model is sold with a pumping capacity of up to 10 meters. Sometimes the groundwater level exceeds this mark and more powerful pumps are used. If we consider 800-watt models, they have a throughput of 3.7 cubic meters per hour and draw water from a depth of 9 meters. There are universal models with a pressure of more than 30 meters, their power is 4000 watts, and a productivity of 40 liters per minute is provided.

Hydraulic accumulator tank volume

A hydraulic accumulator tank is otherwise called an expansion tank or a membrane tank. The main task is to maintain stable pressure that is created in the water supply. Automatic stations are produced with various protections; the pressure is shown through a pressure gauge. Problems with pressure surges are often associated with the electric motor. There are devices on the market with hydraulic accumulators with a capacity of 10 liters or more. If we consider an 800 W model, it can use a 20-25 liter tank. More powerful products are equipped with 30 liter expanders. The choice of hydraulic accumulator depends on various factors.

1. Relay operation frequency.
2. Electric motor reliability.
3. Pump activation system.
4. Average pressure in the system.
5. Water compressibility coefficient.
6. Fluid flow rate.

Water pressure in the system

One of the most important characteristics of the product is water pressure. Not everyone is familiar with setting up equipment. Before purchasing, it is important to determine the flange adjustment and learn the principles for eliminating malfunctions. The pressure in the pipeline changes, so the main task is to ensure stable pressure. Mid-price devices provide a pressure of 40 meters. Units with a 20-liter hydraulic accumulator are more productive, much depends on the engine. Considering small wells, a pressure of 25 meters is enough. If we are talking about deep wells (more than 5 m), the figure should be more than 40 meters. When calculating pressure, the following characteristics are taken into account:

1. Hydraulic accumulator volume.
2. Maximum suction depth of the pump.
3. Motor power.
4. Equipment set.

Power and voltage

Manufacturers provide a wide range and there is plenty to choose from. Stations differ in power and voltage, much depends on the area of ​​use. Not only synchronous, but also asynchronous AC motors with voltages of 220, 380 volts and more are presented. Power starts from 500 watts. Various protections are offered, the buyer pays attention to the following features:

1. Rotor winding.
2. Number of phases.
3. Availability of starting devices. If there are problems with the network at the dacha, it is better to use protected stations that are not afraid of short circuits. The most common are pumps with asynchronous motors, with a rated power of 800 W or more. Such models operate at a voltage of 220 volts, they are suitable for pumping clean. You can hope for a capacity of 60 liters per minute and provide a pressure of more than 30 liters.

Unit type and functionality

Stations are classified according to different features. First of all, the type of water is taken into account - it can be clean, slightly polluted, or dirty. Universal models are sold, and consumers evaluate the type of case. Various materials are offered in this regard:

1. Alloy of aluminum and steel.
2. Brass.
3. Stainless steel.
4. Aluminium alloy.
5. Plastic. Models are supplied with a 5 and 25 liter hydraulic accumulator. The pressure parameter depends on the relay. In 2021, users often prefer devices with remote control. There are interesting products from European manufacturers with high-quality centrifugal pumps. Self-priming models are used with or without a filter. Additionally, the devices differ in the size of the connected pipe. The pump is provided with 1, 1.2, 1.5 inch connectors. The hydraulic accumulator is also made of different materials; interesting models with an aluminum or brass tank are offered.

Details

How does a home pumping station work?

The pumping station of any model has the same operating principle. The operation is based on the following stages:

1.When the equipment is connected to electricity, the pump starts working, pumping liquid into the device. First of all, fill the tank included with water.

2. When the pressure in the system rises to 2.5 atm, the equipment turns off until the water tap is opened.

3. When the pressure drops to 1.5 atm., automatically, using a relay responsible for pressure, the pump comes into action to fill the tank.

4.As soon as the drain valve closes, the pump turns on to completely fill the accumulator.

5.Next, the station is in standby mode until the water is drained.

How to choose a silent pumping station

Autonomous water supply is important if it is not possible to connect to the central pipeline, such a system will supply the house with water without interruption. High-quality equipment can be purchased if you know the rules for choosing pumps:

1. The noise level is considered an important parameter for structures installed in or near residential premises. The level of this indicator should be between 30 and 45 decibels.

2. The power indicator of the device is selected depending on the size of the room into which water will be supplied.

3.Technical features of the well, which include depth, static liquid level, source diameter, influence the choice of device model.

Attention! Factors that should also be taken into account when choosing include the strength of the housing material and the serviceability of the electrical cable.

Installation work

A station with silent operation requires careful installation work. All parts must be connected in the correct order, and at the end, the device must be tested for quality of operation.

When performing installation, you must follow the instructions:

1.Choose a place to install the equipment. In this case, the outlet and outlet of the pump should be located towards the water supply.

2. The device is attached using a bracket; the equipment itself should not touch the wall. The supporting structures for the pump are equipped with gaskets.

3. An adapter is installed at the pump inlet, which is attached to the end of the pipe coming from the trench. A valve is attached to the pipe.

4. At the outlet of the device, a hydraulic accumulator is installed, which is connected to a pressure regulating relay using a hose of a suitable size.

5. Using tubes, filter devices for fine cleaning are connected to the relay, and a water pipe leading into the room is mounted to the outlet of the filter.

6. A shutter is placed on the pipe inside the shaft to prevent liquid from flowing in the opposite direction through the system.

7. A mesh filter is placed at the bottom of the pipe in the shaft to prevent silt and soil from getting inside the equipment.

Attention! The device is equipped with special insulation to eliminate vibrations during pump operation. This allows you to place the device in the basement or in the basement.

Pros and cons of the system

Silent pumps for household use have advantages and disadvantages. The advantages include such properties as:

1.pumps operate independently of the central water supply network.

2.using the equipment, you can extract water without chemical impurities.

3. The pumps have a high level of performance and the devices are reliable.

The disadvantages include the inability to work if the water contains sand and small particles. If it gets into the engine, the mechanism may break.

Rating of the best pumping stations

As mentioned earlier, when selecting a station, many characteristics are taken into account. Due to the large number of manufacturers on the market, users find it difficult to make a decision, so it is recommended to evaluate the rating of the best products. When compiling the TOP, the following factors are taken into account:

1. Maximum power.
2. Immersion depth.
3. Protection of the motor and rotor.
4. Easy to install.
5. Power consumption.
6. Voltage stability.
7. Bandwidth.
8. Price and guarantee.
9. Acceptability of using dirty water.
10. Average performance.
11. Case material.
12. Easy to maintain.

The best pumping stations are presented below.

comparison table

If you want to find the best price-quality ratio pumping station for water supply to a private home, we recommend that you study our comparison table, where we have indicated the main technical characteristics of each model and estimated prices.

The best pumping stations for normal operating conditions

To use a pump in a country house, models of medium power are selected, since water is not pumped out at great depths. It is also important to consider the following factors:

1. Water tank capacity.
2. Power consumption.
3. Compactness of the product.
4. Easy to connect pipes.
5. Pump security. Manufacturers VIHR, Denzel, DAB produce products for a country house. The best of them are described below.

VORTEX ASV-800

Price from 6300 rub.

The rating opens with a standard pumping station, which is suitable for pumping water not only from open reservoirs, but also from wells. According to user reviews, the products are autonomous and easy to maintain. Stable pressure in the system is maintained and there is no need to frequently inspect the pump. It pumps water in large volumes without any problems; a capacitive expander is provided. A centrifugal pump is used, which provides a throughput of more than 3 cubic meters per hour. The station operates from a standard 220 volt network and a power of 800 kW is enough to ensure a stable water supply to the house. If we consider the features, we note the security of the motor and ease of inclusion. Cleaning is carried out periodically, and the casing is made of plastic, so it is resistant to elevated temperatures and vibration.

Advantages:

• Stable voltage.
• High pressure.
• Easy installation.
• Motor security.

Flaws:

• High vibration level.
• Plastic housing.

VORTEX ASV-800/19

Proven Denzel PS1000X

Price from 8000 rub.

The model of the German manufacturer is produced in a plastic case with a centrifugal pump. The device can be called protected; the rotor is not afraid of increased vibration. The power is enough to provide a head of 44 meters. The snack is made of plastic, but is not afraid of increased loads. Among models with a single-stage suction system, the product is distinguished by the quality of a centrifugal pump.

Advantages:

• Light weight.
• Product security.
• Good pressure.

Flaws:

• Noisy model.
• Difficulty adjusting pressure.

Denzel PS1000X

DAB AQUAJET 132 M

Price from 13,700 rub.

This pumping station for a summer residence is suitable for pumping clean water. It works with a security system, is compact in size and weighs only 20 kg. Italian specialists placed the main emphasis on performance and ease of use.

Advantages:

• High security class.
• Reasonable price.
• The quality of the pipes.

Minuses:

• Fragility.
• Rapid wear of the motor.

DAB AQUAJET 132 M

AQUAROBOT JS 60

Price from 7200 rub.

This pumping station can be called universal; it is suitable for pumping water from storage tanks and open water supply sources. Enough power to ensure high performance. The model is manufactured in a rigid case and is designed to withstand significant loads.

Pros of the pump:

• Flange quality.
• Housing security.
• Not afraid of high temperatures.

Some cons:

• Big vibration
• Not suitable for wells.

AQUAROBOT JS 60 – 5

GILEX Jumbo 70/50 N-24 (carbon steel)

Price from 11,800 rub.

The peculiarity of the station is the use of a capacitive hydraulic accumulator. Pressure monitoring equipment is provided and a protected electrical cable is used. The station operates in autonomous mode and consumes a small amount of electricity.

Main advantages:

• Flange security.
• Tightness of the structure.
• Pump endurance.

Minor cons:

• Low quality rotor;
• Problems with the filter.

GILEX Jumbo 70/50 N-24

The best inexpensive pumping stations

If you spend most of your time in a city apartment and only visit your dacha in the summer on weekends, then an inexpensive household pumping station would be your best choice. They usually do not have very high performance, and the power is not too high. But you won’t have to throw away a lot of money for equipment that will be actively used for at best a few weeks a year. Therefore, many people quite wisely choose budget NS. Let's look at a few of these.

VORTEX ASV-370/2 H

If you want to buy a pumping station inexpensively, then you should take a closer look at this model. It has pretty good performance - 2.7 cubic meters. m/hour. For many summer residents this will be more than enough. Suction depth – 9 meters. In many regions of our country, the depth of groundwater is much less, so this indicator is sufficient with a good margin. The main thing is to ensure that the water is relatively clean - if one ton of water contains more than 150 grams of sand, the risk of the pumping station failing increases. But the pump can work not only with cold water, but also with quite warm water - in the range from +1 to +50 degrees Celsius. Perhaps the only serious drawback is the small hydraulic accumulator - only 2 liters. However, no one is stopping you from installing a larger hydraulic tank.

Advantages:

• Affordable price.
• Holds pressure well in the water supply system.
• High performance for its price.
• Reliable performance.
• Low noise level.
• The elaborate fastening of the ASV increases stability.

Flaws:

• Small hydraulic tank volume.

GILEX Jumbo 50/28 Ch-18

Another successful pumping station that has received positive feedback from users. The volume of the hydraulic tank is quite good - 18 liters. This will be more than enough for one or two users. It’s nice that the device weighs very little – only 15.1 kg, which greatly simplifies the transportation and installation procedure.

The model has the function of filtering small particles, which increases service life and reduces the risk of equipment failure.

In an hour the pump passes up to 3 cubic meters. water - this is enough for the needs of any family, not to mention one or two people. The pumping station copes well with wells whose depth reaches 9 meters. Works with water temperatures from +1 to +35 degrees. The cast iron body significantly increases the strength of the equipment and service life, which will pleasantly surprise buyers who value the high reliability of equipment.

Advantages:

• Small dimensions.
• Available parts.
• Russian assembly.
• Quiet.
• Good performance.

Flaws:

• It is difficult to adjust the pressure switch.
• Some models create only relatively little pressure.

VORTEX ASV-800/19

Do you need a budget pumping station that can solve your water supply problem? Then you will probably be pleasantly surprised by this model. Its performance is very good for its price category - as much as 3.6 cubic meters per hour. Moreover, the maximum pressure reaches a height of 40 m, and the suction depth is 9 m. The hydraulic tank is quite spacious - 19 liters. The main thing is to ensure that the water in the well or well is clean - it is advisable to use a special filter. The pump power is 800 W, it is also worth noting that there is thermal protection, which will protect the motor from overload. So, having purchased such a pumping station for your dacha, you will definitely not regret the unsuccessful purchase.

Advantages:

• Excellent performance.
• Easy to maintain.
• Small dimensions and weight.
• Availability of a pressure gauge for convenient monitoring of pressure in the system.
• Ease of installation.

Flaws:

• The hydraulic tank is not enough for a large family.

Denzel PS1000X

Are you interested in a high-quality surface pumping station that can deliver water over a long distance from the well? In this case, take a closer look at this station. Its maximum pressure reaches 44 meters, so there will definitely not be any problems with delivering water from the well to the house. At the same time, the suction depth is as much as 8 meters. Enough reserve even for a fairly deep well.

The maximum pump pressure affects the maximum distance between the water source and the consumer.

The throughput capacity is very high - 3.5 cubic meters of water. Therefore, the pumping station will provide even a large family with sufficient water. And the volume of the hydraulic tank is relatively large - 24 liters. Therefore, the pump will not have to be started too often, which means the risk of breakdown is significantly reduced. It is not surprising that, judging by user reviews, no one regrets such a purchase.

Advantages:

• High quality build.
• High throughput.
• Easy connection.
• Compact dimensions.
• Powerful and reliable.

Flaws:

• Significant noise level during operation.

The best pumping stations with large suction depth

To effectively suck water from a deep well, powerful stations with centrifugal pumps are used. Their productivity starts from 40 liters. Asynchronous motors with a power of 800 watts or more are used. There are models with durable cast iron bodies or an aluminum alloy is used.

Grundfos Hydrojet JPB 5/24

Price from 21,000 rub.

The German manufacturer offers a model for the garden that can withstand a pressure of 6 bar. A single-stage suction system is used and a protected rotor is installed. The inlet diameter is 1 inch and a strong frame is used.

Main advantages:

• Good stability.
• Suitable for wells.
• Low noise.

Some cons:

• Overcharge.
• Difficult to maintain.

Grundfos Hydrojet JPB 5/24

Quattro Elementi Automatico 800 Ci Deep

Price from 7500 rub.

With the help of this product it is easy to solve the problem with water supply in a private home. Open sources of water supply and closed reservoirs are considered. The Italian company produced a model with a steel accumulator, and the body is made of cast iron, so it is heavy. Operation is ensured by an asynchronous motor. The model is automatic and unpretentious in maintenance.

Main advantages:

• Reliability of fastening.
• Protected motor.
• Long work.

Minuses:

• Problems with the rotor.
• Dirty water is not suitable.

Quattro Elementi Automatico 800 Ci Deep

CALIBER SVD-770CH+E

Price from 9200 rub.

Among surface stations, this model stands out on the positive side. For it, water heated to a temperature of more than 30 degrees is allowed. The tank is used for 20 liters, and the manufacturer took care of the connection. The model is only suitable for pumping clean water. The station is installed at dachas and country cottages.

Main advantages:

• System autonomy.
• Installation mobility.
• Easy to turn on.

Some disadvantages:

• Starts loudly.
• Overcharge.

CALIBER SVD-770CH+E

The best budget models

Inexpensive stations are considered if a pump with low capacity is selected and low water pressure is not required. Manufacturers save on materials and components. However, based on user reviews, it is still possible to select a compact station that will allow you to pump water from a well, and manufacturers from Russia, Italy, and other countries are represented on the market.

Russian CALIBER SVD-160/1.5

Price from 3500 rub.

This is a popular station that is compact and additionally provides a pressure of 28 m. As a rule, it pumps water from open tanks and wells can be considered. The rotor is made of brass, the installation power is only 160 W. The pump cannot be called secure, but problems rarely arise with it. To cool, you have to periodically turn off the device.

Main advantages:

• Rotor strength.
• Pump quality.
• Decent performance.

Minuses:

• Not suitable for wells.
• Problems with the impeller.

CALIBER SVD-160

PRORAB 8810 SCH

Price from 3000 rub.

The station comes with a centrifugal pump, has good performance, and uses a 2-liter hydraulic accumulator. A single-stage system can hardly be called high-quality, but it ensures a stable water supply. The disadvantage lies in the fact that there is no way to regulate the pressure.

Advantages:

• Cast iron body.
• Engine power.
• Single stage suction system.
• Centrifugal pump.

Minuses:

• Chinese kit.
• No protection.

PRORAB 8810 SCH

AQUAROBOT M 5-10N

Price from 3500 rub.

For a country house, this budget station with a 5-liter hydraulic accumulator is often considered. It operates on a 220 volt network and is not afraid of overloads. It can withstand a maximum pressure of 3 atmospheres, so when connecting everything is agreed upon with a specialist. The pipes for the pump are suitable with a diameter of 25 mm. The model does not consume a lot of electricity, so it can be called economical.

Advantages:

• Suitable for slightly polluted water.
• High quality hydraulic accumulator.
• Presence of an impeller.
• Protective rotor.

Minuses:

• Low pressure.
• Relay failures.

AQUAROBOT M 5-10N

The best premium models

If your budget allows, you can consider premium stations. In the high price category there are sellers of German and Italian manufacture. The user has the opportunity to select an installation with a protected cable and a powerful pump. There are models with electronic control and LCD display.

DAB E.Sybox

Price from 78,900 rub.

The device cannot be called compact, but a huge pump with high power is used. It is suitable for pumping various types of water (even with abrasive impurities) and is unpretentious in terms of temperature. Withstands a maximum pressure of 7 bar and takes into account the protection of the engine. All wiring is hidden, according to user reviews there is a very low noise level.

Main advantages:

• High pressure.
• Pump power.
• Built-in frequency converter.
• Availability of LCD display.

Minuses:

• Installation problem.
• Pressure adjustment.

DAB E.Sybox

Wilo HMC 605

Price from 52,000 rub.

The Germans offer to evaluate the quality of this station, which has colossal power and provides a productivity of 7 cubic meters per hour. 1-inch diameter pipes are suitable for connection. The kit includes a 50 liter membrane tank. The unit is good for watering and runs quietly.

Main advantages:

• Single phase motor.
• High power.
• Quality of protection.
• Stainless steel housing.

Disadvantages of the system:

• No dry running protection.
• Large dimensions.

Wilo HMC 605 3

Grundfos CMBE 3-62

Price from 62,500 rub.

For water supply and irrigation, this station with a pressure of more than 9 bar is considered. A self-priming motor is used and the frequency needs to be adjusted. It is made of stainless steel, so the body is durable. A 2-liter tank is used; in addition, the system has a significant head of 39 m.

Main advantages:

• Suitable for watering.
• Long cable with plug.
• Easy installation.
• Station performance.

Minuses:

• Noisy during operation.
• High electricity consumption.

Grundfos CMBE 3-62

Low noise pumping stations

When the station is located near the house, you want the noise level to be as low as possible. For normal models it is around 60 decibels. To ensure quiet operation, casings made of different materials are used. The motors are usually of the synchronous type.

Hammer NST 800A

Price from 8900 rub.

The product is supplied with a centrifugal pump, providing a pressure of more than 45 m. Contaminated water is allowed in which the particle diameter does not exceed 3 mm. The model is compact, weighs only 15 kg and is easy to transport. The noise level is only 60 decibels, a protective casing is used.

Important benefits:

• Capacity is more than 3.5 cubic meters per hour.
• Protective cover.
• Asynchronous motor.
• Reliable frame.

Minor disadvantages:

• Engine problems.
• No filter.

Hydraulic accumulator of the pumping station

The hydraulic accumulator, which is a functionally important component of the pumping station, is a sealed metal container connected to the outlet fitting of the pump.

Hydraulic accumulator device

Inside the tank there is an elastic membrane partition, usually made of natural rubber or artificial butyl rubber.

The membrane divides the tank into two chambers - air and liquid. A pressure switch coupled to the hydraulic accumulator determines the water pressure in the liquid chamber of the tank and, based on the data obtained, controls the operation of the pump.

The material for the manufacture of hydraulic accumulators is traditionally steel. If the membrane is pear-shaped, then water comes into contact only with it, and, therefore, the possibility of corrosion of the internal walls of the tank is completely excluded.

Pear-shaped hydraulic accumulator.

1. Metal tank. 2. Nipple for pumping air.

3. Pear-shaped membrane. 4. Connection for connecting to the pump.

If a flat membrane is used to divide the tank into two parts, then a protective polymer coating is applied to its metal walls.

The outside of the tank is made of low-carbon steel and is protected from atmospheric moisture by an enamel coating. If you intend to install a pumping station outside a heated room, then preference should be given to a stainless steel hydraulic accumulator.

Hydraulic accumulator made of low carbon steel, coated with enamel.

Hydraulic accumulator made of stainless steel.

Purpose and principle of operation of the hydraulic accumulator

The liquid chamber is filled with water, and under the pressure created by it, the elastic partition is deformed. When the pressure drops as a result of water consumption by users, the membrane straightens and a new portion of liquid is released from the tank.

Thus, the hydraulic accumulator ensures the supply of water to the water collection points even when the pump is not working. Moreover, it limits the number of pump starts. A certain supply of liquid is stored inside the reservoir, and therefore there is no need to turn on the pump every time you open the tap.

Typically, the water consumption from the accumulator before refilling is half of its full volume. For example, from a 20-liter tank you can easily pump out 10 liters of water without turning on the pump. And the less often the latter is turned on, the longer it will last.

Some surface pumps allow a high frequency of starts - up to 30-100 times per hour. However, frequent starts/stops significantly reduce the service life of the electric motor - the resource of individual components of the device is exhausted prematurely. From this point of view, the ideal option is when the number of pump starts/stops does not exceed 10-20 times a day.

The hydraulic accumulator not only creates pressure in the water supply network of the house, serves as a limiter on the number of repeated and short-term pump starts, and stores a supply of water. It also allows you to avoid water hammer - sudden surges in pressure in the system.

How to choose the volume of a hydraulic accumulator

The volume of the hydraulic accumulator can vary depending on the model from 8 to 100 or more liters. The choice of hydraulic tank size depends on the total water consumption, well depth, pipeline length and pump parameters. Together with pumps with a power of up to 1.2 kW, it is recommended to use hydraulic accumulators with a capacity of 20-24 liters; for pumps with a power of 1.5-2 kW, tanks with a capacity of 50-60 liters are more suitable.

What volume can be considered optimal? The more the better, but up to certain limits. Theoretically, the larger the volume of the accumulator, the more reliably the pump is protected from frequent starts. However, practice shows that increasing the volume of the tank to 100-200 liters very often leads to a decrease in the comfort of using the water supply: the user is forced to put up with the fact that the pressure of the water flowing from the tap gradually decreases.

Users who have extensive experience in operating pumping stations are unanimous in the opinion that a hydraulic accumulator with a volume of 16-24 liters is most convenient. It should be borne in mind that, if necessary, you can always connect an additional hydraulic accumulator of the required volume to the water main.