If it is necessary to extract water from great depths, specialized borehole pumps are the best choice. Their use is justified when the working depth is more than 15 meters, and the unit itself must be immersed in liquid, that is, the use of surface models is impossible. In everyday life, borehole pumps are used when supplying water from wells or boreholes to a dwelling, when irrigating summer cottages. For domestic purposes, the equipment of the Italian concern Aquario is perfectly suitable, combining high quality and affordable price.
The principle of operation and device
The main characteristic of borehole pumps is the high pressure they create. Achieve a strong fluid pressure allows the multi-stage design of the unit. The efficiency of the Aquario deep electric pumps is achieved due to the centrifugal force created by the impellers placed in the chambers. To create high pressure in the water supply system, the number of level levels is adjusted to several tens.
A special design helps to increase the immersion depth of the unit, in which the electric motor is placed in an oil chamber with a ceramic-graphite seal (wet rotor motor). The chamber is separated by a plastic membrane. Due to this feature, the external and internal pressure are equalized, which allows to withstand the pressure of a large column of water and at the same time maintain tightness, in contrast to devices with a dry rotor. Uninterrupted operation is provided by the built-in non-return valve, designed to keep water from flowing out, to prevent water hammer and to rotate the impellers in the opposite direction after turning off the engine.
Aquario electric pumps have a robust housing made of stainless alloy. The wear resistance of the unit is ensured by the materials used in the production of parts: the outlet pipe and the engine cover are made of brass; knots of a pump compartment - from high-quality technopolymers, a shaft - from stainless steel. Reliability of the device is achieved due to improved bearings, reinforcement of the most critical components and connections with steel inserts, as well as motor insulation with modern class F materials. A mesh filter in the middle of the device helps to safely draw liquid.
The convenience of setting up Aquario equipment and the ability to control its operation is provided by a remote control panel with a built-in capacitor. Another design feature of these units is the presence of a power cable.
Each device is accompanied by clear and simple instructions, which indicate all the most important technical specifications.
Lineup and Specifications
Aquario well pumps are divided into three groups according to the diameter of the casing: 3, 3.5 and 4 inches. Each group contains two or three models that differ in operating parameters. Any model is designed to pump water with a temperature of at least 1 and no more than 35 degrees. The maximum number of starts and stops within an hour also has a limitation - they should be no more than 20.
Pumps with housing diameter 3 inches in generally show the smallest values of the pressure of the liquid. Suitable for use in narrow columns. The maximum immersion depth is 30 m.
With diameter3.5 inch installations have average values of head and nominal fluid flow rate. Depth of immersion varies from 20 to 30 m.
A distinctive feature of models with a diameter 4 inches - increased pressure and nominal flow rate of pumped water, high sensitivity to the amount of impurities (up to 120 g / m3). Also, these pumps have a short power cable, which requires its additional extension when used in wells or wells. The maximum immersion depth is 10 m.
Pump Selection Criteria
Choosing the right unit for a specific task is quite simple. It is necessary to take into account the following parameters:
- amount of impurities in the pumped liquid: Aquario pumps are designed to work in clean water, i.e. the diameter of foreign particles should not exceed 10 mm;
- device performance: calculated on the basis of the approximate flow rate when opening all the water taps in the house;
- pressure: when calculating, take into account the height by which it is necessary to raise the pumped liquid;
- borehole or well diameter: the device should enter the string freely.
The free official “Aquario Pump Selector” app can help you find the right one. It can be downloaded via Google Play.
Advantages and disadvantages of Aquario equipment
The undoubted advantages of Aquario devices are:
- design reliability;
- the possibility of deep immersion;
- affordable cost;
- complete assembly and adjustment of devices in production;
- continuous improvement of existing models.
Also, the manufacturer’s advantages include a developed network of service centers to advise customers on the operation and repair of equipment.
The disadvantages include:
- low fault tolerance in case of excessive pollution of water with sand and other suspensions;
- the need to strictly observe the immersion depth in order to avoid depressurization.
At thematic forums, reviews about the AQUARIO submersible pump are usually positive. Many people note the long service life of the equipment with its proper operation and the high pressure of the water created by the unit.
