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Block pump with dry rotor WiloBAC Block pump with dry rotor Wilo-BAC
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  • Pump type: Dry rotor pumps
  • Scope of application: conditioning
  • Working environment temperature: -15 °C to +60 °C
  • Consumption: 0-80m3
  • Pressure: 5-25m
Block pump with dry rotor WiloCronoBlocBL Block pump with dry rotor Wilo-CronoBloc-BL
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  • Pump type: Dry rotor pumps
  • Scope of application: heating, air conditioning, closed cooling circuits
  • Working environment temperature: from -20 ° C to + 140 °C
  • Consumption: 0-375m3
  • Pressure: 5-100m
Circulation pump WiloCronoTwinDL Circulation pump Wilo-CronoTwin-DL
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  • Pump type: Circulating pumps
  • Scope of application: heating, air conditioning, closed cooling circuits
  • Working environment temperature: from -20 °C to +140 °C
  • Consumption: 0-1180m3
  • Pressure: 0-67m
Circulation pump WiloStarRS Circulation pump Wilo-Star-RS
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  • Pump type: Circulating pumps
  • Scope of application: heating, air conditioning, industrial circulation systems, raw water intake
  • Working environment temperature: from -10 °C to +110 °C
  • Consumption: 0-5.5m3
  • Pressure: 0-7.8m
Cantilever pump with dry rotor WiloCronoNormNL Cantilever pump with dry rotor Wilo-CronoNorm-NL
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  • Pump type: Dry rotor pumps
  • Scope of application: heating
  • Working environment temperature: from -20 °C to +120 °C
  • Consumption: 0-550m3
  • Pressure: 0-150m
Energysaving circulation pump with dry rotor WiloCronoTwinDLE Energy-saving circulation pump with dry rotor Wilo-CronoTwin-DL-E
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  • Pump type: Dry rotor pumps
  • Scope of application: heating, air conditioning, closed cooling circuits
  • Working environment temperature: from -20 ° C to + 140 °C
  • Consumption: 0-377m3
  • Pressure: 0-65m
Circulation pump WiloStarRSD Circulation pump Wilo-Star-RSD
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  • Pump type: Circulating pumps
  • Scope of application: heating, air conditioning, industrial circulation systems, raw water intake
  • Working environment temperature: from -10 °C to +110 °C
  • Consumption: 0-7.1m3
  • Pressure: 0-5.0m
Energysaving circulation pump with dry rotor WiloCronoLineILE Energy-saving circulation pump with dry rotor Wilo-CronoLine-IL-E
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  • Scope of application: closed cooling circuits, heating, air conditioning, industrial circulation systems
  • Working environment temperature: from -20 ° C to + 140 °C
  • Consumption: 0-610m3
  • Pressure: 0-63m

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Water pumps

Hydraulic pumps are called hydrodynamic machines that convert mechanical or (most often) electrical energy into the difference in fluid pressure at the inlet and outlet, and ultimately into the energy of the movement of the fluid medium flow. The process of operation of a hydraulic pump is called pumping a liquid medium. Its main parameters are:

  • productivity (supply), measured in m 3 of the medium, pumped over a unit of time (most often - per hour) m3 / h;
  • discharge pressure at the outlet of the pump, or head, measured both in system units (MPa, bar, PN), and in figurative units - meters of rise of the water column of water column;

The variety of existing fundamental designs of hydraulic pumps is large enough, their systematization is complex and ramified. Therefore, we will focus on hydraulic pumps operating with liquid water (cold and hot), which are used in water intake systems, water supply, circulating water heating and cooling systems.

Designs of water pumps depending on the principle of operation

In industry, technology and economy, the most widespread are water pumps driven by a classic rotary-stator electric motor or an electric vibration motor, of the following design types:

  • Vibrating membrane . In such pumps, the pumping (suction and ejection) membrane is driven by the rod of an electromagnetic vibration drive, which reciprocates depending on the change in the polarity of the alternating electric current. In general, vibrating water pumps are characterized by low performance, low head, sensitivity to pollution, short service life, but at the same time, they are simple in design and cheap. They are most widely used for household use, for taking water from open sources (including wells), for organizing garden irrigation.
  • Screw (auger). One of the most ancient types of water pumps, the design of which is based on a rotating Archimedes screw (auger). In general, screw water pumps are characterized by high head indicators and the ability to work with water heavily contaminated with mechanical impurities. But at the same time, screw pumps are characterized by low performance and a very limited service life (due to mechanical wear of the screw in a highly polluted environment).
  • Centrifugal , as well as their variety - vortex . Today - the most widespread design of water pumps (pumps). Liquid pumping is carried out using a rapidly rotating multi-blade impeller (disk or impeller), which sucks in water from the supply pipe, and under the action of centrifugal force (in vortex pumps - also with the help of a vortex pressure) ejects (pumps) it into the discharge pipe. In general, centrifugal pumps are characterized by high performance, moderate head indicators, fairly good technical reliability and low sensitivity to the presence of minor contaminants. At the same time, centrifugal pumps cannot handle highly contaminated liquid media.
  • Axial. Plunger type of rotary piston hydraulic machine (pump) for liquid media. The pumping plungers are driven by a rotating (on the rotor of the electric motor) swash plate with a controlled tilt angle. It is used when it is necessary to regulate the flow (performance) of the water pump in a wide range. For use with purified water only.
  • Multi-stage . They are a type of centrifugal water pumps in which several multi-vane impellers are used in series (cascade). Multistage water pumps are used when it is necessary to create large values of water pressure, at the same time at high values of performance, typical for centrifugal pumps.

Насосы


Water pump designs depending on the application

Depending on the scope of application, the following types of water pumps can be distinguished:

  • Surface , for water intake, with the location of the pump working body above the level (edge) of water in the source. In a single-stage design, they have a natural limitation in the height of the rise (pressure) of water, which cannot be more than 9.8 m. Therefore, with all the structural simplicity and low cost, they are of limited distribution for domestic use. To increase the head (pressure) of water, more complex multistage designs of surface normal suction pumps are used.
  • Submersible (including downhole). They are used for water intake, with the immersion of the pump below the water level in the source. Depending on the design (vibrating, screw, centrifugal, vortex) they provide moderate and high performance and pressure indicators, but they require increased requirements for the body tightness and electrical protection of both the pump itself and the supplying electric cables.
  • Semi-submersible. They have a drive electric motor above the water level, and the pump working body is submerged, below the water level. The electric motor and pump are connected by a long drive rod. Without their disadvantages, the semi-submersible design has all the advantages of submersible pumps, but only up to certain water intake depths, which are limited by the length of the drive rod (up to a maximum of 7 m).
  • Circulating . They are used to work in closed circulation circuits of hot water heating, cooling, or complex air conditioning. In their design, the main emphasis is on high technical reliability, to ensure long operating time in continuous circulation mode, as well as for a wide range of operating temperatures typical for hot water. As a rule, all circulation pumps are of centrifugal type, structurally divided into two subtypes:
  • For drinking water . A variety of water pumps, in which the main emphasis is placed on the hygiene of the materials used (stainless steel, "food" plastic, silicone seals), which exclude the ingress of harmful substances into the pumped drinking water. They are used as booster pumps, in drinking water supply systems, after a suitable water filter or for water intake from a food container.

Насосы


Water pump selection parameters

The selection of a water pump is carried out according to the following parameters:

  • intended purpose: for water intake, heating, cold water supply, hot water supply, food (drinking) water, etc .;
  • special design requirements: surface normal suction, borehole (for casing pipes), submersible for open sources and containers;
  • required capacity, in m3 / h;
  • required supply pressure (head) of water, in MPa (Bar, PN) or in meters of water column rise (1 m = 0.098 Bar, 0.0098 MPa);
  • required operating temperatures: for cold water up to 40 degrees C, for hot water - from 95 degrees C and above;
  • by the connecting diameter of the nozzles (suction and delivery) to the pipeline system;
  • by the nature of the connecting unit: flange or threaded connection;
  • with the presence of private regulation and control automation (analog, digital) and without.

Насосы


Water pumps of OPEKS Energosystems

OPEKS Energosystems, a company specializing in the production and sale of high-quality heat and power equipment, is committed to integrated solutions. Therefore, I am ready to offer water pumps of only the best quality, produced by well-known brands - the German company Wilo SE and KSB, the Danish Grundfos, for work with heating equipment, both of its own production and of third-party manufacturers.

The products of these companies do not require special presentation. After all, today it is widespread in the markets of pumping equipment for water supply, heating, ventilation, air conditioning systems and is well known to both specialists and a wide range of consumers.

The assortment of OPEKS Power System includes a wide selection of high-quality, reliable pumping equipment Wilo, Grundfos, KSB, while at prices that are quite affordable for the domestic market:

  • surface normal suction pumps, multistage high performance, for intake or pumping out of raw water;
  • submersible borehole pumps for the intake of raw water from medium and large depths;
  • highly reliable and quiet circulation pumps with a wet rotor;
  • high performance circulation pumps with dry rotor;
  • multistage, console and other pumps.
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