Pumps
How to choose a submersible pump for a well or well
First, the depth of the source, its flow rate, and the dynamic water level—the one that is set during pumping—are determined. Next, the lift height to the point of consumption, the required pressure, and pipe losses are determined.
When choosing a submersible pump for a well, check the cooling conditions of the electric motor. A large shaft diameter does not guarantee sufficient flow around the housing. Some well models require a cooling jacket that directs water along the motor. The distance to the bottom and the minimum immersion are determined according to the manufacturer's instructions.
Types of household pumps
Submersible and surface-mounted versions are used for water supply. The choice depends on the location of the water, the required supply and the ability to equip the installation site.
Deep well pumps
The narrow body allows the equipment to be lowered into the casing. The deep well pump is selected with the required mounting clearance, taking into account the cable and the pressure pipe connection. The performance is coordinated with the flow rate: if the pumping out is ahead of the water intake, the level drops and there is a risk of dry running.
Surface pumps
Such equipment is located outside the source, and water is supplied by a suction line. It is convenient for maintenance, but has limitations in suction height. A long pipe, leaky connections and significant losses complicate the supply. Permissible conditions are checked for a specific model.
Key selection parameters: productivity, pressure, well diameter
The operating point is determined by the required flow rate and head and checked against the pump characteristics. The maximum flow rate and maximum head are not reached simultaneously. The calculation takes into account:
- pipe length;
- fittings;
- filter;
- reinforcement;
- height difference.
Water demand is estimated based on simultaneously open points.
Before buying a submersible pump, also check the supply voltage, cable length, and control method. For stable operation, appropriate conductor cross-section and proper electrical protection are important. The automation must match the motor parameters and water supply scheme.
The accumulator in the system with a pressure switch reduces the frequency of starts. Its volume and settings are adjusted to the flow rate.
Materials for manufacturing and protecting the electric motor
The casing, impellers and seals must match the composition of the water. The presence of sand is assessed by the permissible content of impurities in the passport: abrasive particles accelerate wear of the hydraulic part. Dry-running and overload protection may be built-in or require separate devices.
For a well, level control is sometimes organized through a float, if the design and space allow. In a narrow well, other appropriate control methods are used. The equipment is suspended by the provided fasteners. The electric cable is not used as a load-bearing element.
Areas of application of household pumps
Such systems provide water to private homes, cottages, utility buildings, and irrigation lines. For drinking water supply, the quality of the water and the suitability of the contact materials are tested.
The price of a submersible pump depends on the design, performance characteristics and equipment. The estimate should include a pressure pipe, cable, safety automation and installation materials. This allows you to estimate the cost of the finished water supply, not just the unit itself.
Buy a submersible pump for a well or borehole with delivery across Ukraine
To select a water source, please inform UKSPAR of the diameter of the source, dynamic level, flow rate, required flow rate and distance to the house. Add power supply parameters and a description of consumption points. The manager will specify the appropriate version of the 4SD series, its availability, delivery set and delivery terms across Ukraine.