Pumps for water supply: the rules of choice, types and principle of operation
If you are going to live outside the city, then you will face the issue of water supply to the backyard plot and the house. Typically, the owners of cottages and country houses resort to old-fashioned irrigation methods using watering cans and buckets, and they acquire clean water in stores.
In order to make life outside the metropolis more comfortable, you can use pumping stations by creating an autonomous water supply system using them, which will not depend on centralized communications. This will solve the issue of arranging home plumbing and proper organization of irrigation.
Types of pumps for water supply
Before you buy a pump for water, you need to understand its varieties. Among others it should be highlighted:
- pumping stations;
- submersible drainage installations;
- well and borehole units;
- self-priming devices.
The latter version can be equipped with an ejector. In this regard, it is better to carry out installation outside the premises. Such pumps are convenient in operation when watering a garden or vegetable garden, as well as when filling a pool or pond. A pumping station is a self-priming pump that is installed on a membrane tank. It is complemented by a pressure switch.
In a membrane tank, one part of the tank is filled with air, while the second is filled with water. Selecting and installing a downhole pump is much more difficult than the previous ones. The cost of well installations is higher than the price of pumps of another type. This is due to the small diameter of the structure and high pressure. Submersible drainage pumps help with the flooding of the basement or cellar in a country house. Their weight is insignificant, they are energy efficient, and their weight does not exceed 4 kg.
If you need a pump for water, you should pay attention to several factors, among them should be highlighted:
- height of rising water;
- volume of the hydroaccumulator;
- reliability of automation;
- materials used;
- installation method.
Among the technical characteristics it is necessary to highlight:
- electrical power.
As for the height of the lift, it is one of the important characteristics and affects the cost of installation. By suction type, the pumping station can be:
- with integrated ejector;
- with the portable ejector.
A centrifugal, or vortex, pump has a small capacity, but is able to provide a good head. If you want to get equipment that will work silently and have low cost, you should choose such a model. But its maximum depth of absorption is minimal and does not exceed 8 m.
Multistage pumps for water supply are designed for surface installation and will work near the source. Its depth should not exceed 8 m. Such installations work silently, and also differ in the improved technical characteristics. If you want to use equipment with an increased length of the suction line, then you must purchase a pump that is equipped with an ejection device.The principle of its operation is expressed in the fact that part of the output stream will be redirected to the suction line. Due to this it is possible to lengthen it.
Equipment with ejector
Pumps with built-in ejector provide water rise from a depth of up to 10 m. This allows them to be used for pumping water from shallow wells, open reservoirs and reservoirs buried in the ground. When choosing a pump for water supply that would work silently, you should pay attention to the remote ejector system. They are capable of raising water from a depth of up to 35 m.
Ejector devices can be installed at the source or at some distance from the pumping station. You need to be prepared for additional expenses when choosing an ejector pump. They will be connected with the fact that the price of the equipment itself is high, and the installation of two parallel pipes will be expensive. This should be considered at the design stage of the well.
Before choosing a pump for water supply at home, you should consider pumping stations. They are usually equipped with a hydroaccumulator. It provides a supply of water and reduces the frequency of turning on the pump.On sale you can find models without a storage tank. Their automation switches on the device when the valve is opened or the toilet bowl is filled. Such units have the advantages expressed in their compactness, ability to maintain stable pressure and acceptable cost.
But there are drawbacks, they consist in frequent switching on of the pump and in the absence of a reservoir. These disadvantages are complemented by serious requirements for the elements of the water supply system and the connecting parts, which must undergo hydraulic shocks and high pressure.
Choice of installation for hot water
When purchasing a pump for a water supply system, you should pay attention to the classification according to the type of rotor, which can be wet or dry. Pumps with a wet rotor provide for the presence of the pressure part in the pumped liquid. Water flows act as a coolant and lubricant. Such constructions work extremely long, and their noise threshold is very low.
Such a pump has an affordable price and does not require maintenance. It can be set and forgotten for a maximum period. The circulation pump for water supply has a minimum of drawbacks,among them, the need to install in a horizontal position and low efficiency.
Such installations are unsuitable for providing large water systems, but are perfect for small buildings. When considering a pump with a dry rotor, you should take into account that its power plant is separated from the pumped liquid. During operation, the device may experience problems with lubrication and cooling. The first is periodically added, and cooling is achieved by installing a fan. As a result, the equipment is more expensive to maintain and equip, but the costs are paid off with high efficiency - up to 75%.
Selecting a pump for DHW by brand
When purchasing a circulation pump for water supply, you should consider several models. The popularity of some of them is often due to the price component. Among other offers of the market, the equipment with a wet rotor UPGrundfos, which is intended for hot water circulation, should be highlighted. The unit works without noise, but it has low power, as well as only one speed. These disadvantages should be considered the owner of a large heating system.
But the advantages of such a pump for hot water are much more, they are expressed in minimal risk of deposits on the walls, no need for maintenance and the possibility of dismantling equipment without disassembling the pipeline.
Description of the pump Wilo-Star-Z
The wet type of units also includes the Wilo-Star-Z model, which can be installed in heat networks. The device has a mechanical valves and electronic control system. The unit can be used in the “smart home” system; it has the function of a thermal disinfectant element, which is necessary for pumping drinking water.
Model Description VolterBW 152 R1 / 2
Before you buy a pump for water supply of a private house, you should be familiar with its basic characteristics. Is no exception and VolterBW 152 R1 / 2. This equipment of the German supplier has high performance and maintainability.
Even a novice master will be able to cope with disassembling the device, and there is no need to dismantle the water supply system. The device is characterized by noiseless operation, modest size, as well as high efficiency.
The principle of operation of a submersible centrifugal pump
The centrifugal submersible water supply pump has a spiral housing and a multi-blade wheel that is fixed inside. The blades are bent in the opposite direction from the rotation of the wheel.
The principle of operation of the equipment is simple. With the help of the engine, the wheels rotate around an axis, and the blades located on them create a centrifugal force that moves the fluid along the hub. Increased pressure helps push water into the pipeline system. Such a pump for a well for the water supply of the house has a design that contributes to the curling of the flow, so there is a leveling device at some distance from the sleeve. Through it, water enters the pressure pipe.
If you have a country house, then it should be created conditions that are comfortable for living. When there is a well or a well on the site, you will be able to build an autonomous water supply system on your own, it will be enough to purchase a domestic pumping station.