If it is necessary to produce water from great depths, specialized borehole pumps will be 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 wells to a dwelling, when irrigating summer cottages. For domestic purposes, the equipment of the Italian concern Aquario is perfect, combining high quality and affordable cost.
Principle of operation and device
The main characteristic of borehole pumps is the high pressure they create. A multi-stage design of the unit allows to achieve a strong liquid head. The efficiency of the Aquario deep-well electric pumps is achieved due to the centrifugal force created by the impellers located in the chambers. To create high pressure in the water supply system, the number of levels-steps is brought 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 engine). The chamber is separated by a plastic membrane. Thanks to this feature, the external and internal pressures are equalized, which makes it possible 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 ensured by a built-in check valve designed to keep water from flowing out, prevent water hammer and reverse rotation of the impellers after the engine is turned off.
Aquario electric pumps have a robust casing made of stainless steel. 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; pump compartment units are made of high quality technopolymers, shaft is made of stainless steel. The reliability of the device is achieved due to improved bearings, reinforcement of the most critical components and connections with steel inserts, as well as insulation of the electric motor with modern class F materials. A mesh filter in the middle of the device helps to safely draw the liquid.
The convenience of setting up the Aquarium equipment and the ability to control its operation is provided by a remote control panel with a built-in condenser. Another design feature of these units is the presence of a power supply cable.
Each device is accompanied by clear and simple instructions, which contain all the most important technical characteristics.
Model range and technical characteristics
Pumps with casing diameter 3 inches in generally show the smallest values of the head of the liquid. Suitable for use in narrow columns. The maximum immersion depth is 30 m.
With a diameter3.5 inch installations have average values of head and nominal flow rate.The immersion depth varies from 20 to 30 m.
A distinctive feature of models with a diameter 4 inch - increased head 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 additional extension when used in wells or boreholes. The maximum immersion depth is 10 m.
Pump selection criteria
It is quite simple to choose the unit suitable for a specific task. It is necessary to take into account the following parameters:
- the amount of impurities in the pumped liquid: Aquarium pumps are designed to operate in clean water, i.e. the diameter of foreign particles should not exceed 10 mm;
- device performance: calculated based on the approximate water consumption when opening all water supply taps in the house;
- pressure: when calculating, the height to which it is necessary to raise the pumped liquid is taken into account;
- borehole or well diameter: the device must freely enter the string.
The free official app "Aquario Pump Selector" can help you with the selection. It can be downloaded via Google Play.
Advantages and disadvantages of Aquarium equipment
- structural reliability;
- the possibility of deep diving;
- 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 water pollution with sand and other suspensions;
- the need to strictly observe the immersion depth in order to avoid depressurization.
On thematic forums, reviews of the Aquarium submersible pump are usually positive. Many people note the long service life of the equipment when it is properly operated and the strong water pressure generated by the unit.
