The choice of a borehole pump is an important stage in the arrangement of water supply for private users. A clear and well-organized system operation will depend on the correct decision. Well pump will provide pumping of liquid from the source to the places of use. With the help of such a device, it is possible to arrange the delivery of water to the house or to the plot, watering, irrigation of vegetable gardens and greenhouses, as well as other household needs.

How to choose a pump for a well

There are many downhole pumps on the electrical equipment market and it is often difficult for users to choose the right unit for their source. All well motors are divided into three varieties:

  • surface – used for shallow wells, wells or reservoirs in which the suction height is not more than 8 meters and there are no abrasive and long-fiber fractions in the water;

  • submersible – suitable for deep wells;

  • semi-submersible – used for hard-to-reach and narrow sources.

The names of the pumps indicate the location of the pumps. Surface ones are placed on the ground not far from the source, having lowered only a hose into the liquid. Submersibles function directly in the well below the water level. In semi-submersible pumps, only the motor part is above the water, while the pumping station is located directly in the water. The latter are rarely used, while ground and deep units are the most in demand.

Among other things, the pumps differ in the principle of operation. Depending on the composition of the working environment and the required operating parameters, pumps are:

  • Centrifugal – pumping water under the influence of centrifugal forces. They are distinguished by high performance and efficiency.

  • Vortex – deliver water thanks to the vortices created on the impeller blades. They are used when it is necessary to create high pressure in a small amount of water. The efficiency is small.

  • Auger – work by moving a screw auger, creating a large head in a small volume of water. Suitable for wells with low debit.

  • Vibrating – they pump water due to vibrations, but use is possible only in wells or tanks. Performance parameters are insignificant, but are appreciated due to the budgetary cost.

When choosing a downhole option, it is important to consider the casing diameter. It must match the pump. Manufacturers indicate acceptable sizes. If the flow rate (replenishment per unit of time) of the source is small, then a pump with a low capacity (screw or vortex) is selected. If the water consumption is high, it is better to use a centrifugal model. Summer residents use vibration pumps.

The required head is calculated based on the length of the pipes. Moreover, 1 meter horizontally corresponds to 10 meters vertically. Productivity is calculated by summing the total water consumption. But the pump power depends on the above characteristics. Although you can find energy-saving pumps that give out high levels of head and performance.

When buying a pump for a well, make sure the quality of the material of manufacture and the tightness of the devices. Submersible units must be made of stainless steel. There is no such requirement for superficial ones, since they do not come into direct contact with water. It is important that their location is dry and protected from the weather and moisture.