To solve problems with water supply once and for all, there is a good way out - the construction of its own pumping station. At its core, this is a system that consists of a pump engaged in pumping water from a well or well, as well as a pipeline that ensures its delivery to water intake sites.
The arrangement of each element of the system is a rather important and crucial stage, therefore everything needs to be approached thoroughly, with the necessary risks taken into account. Quite significant is the moment that the pipe, which is connected to the pump, must be constantly filled with water so that it can swing freely. And for this you need to install a check valve for the pumping station. Traditionally, it is paired with a coarse filter. Its task is to protect the pump from getting into it a variety of impurities deposited on the filter screen.
Features
The check valve for the pump station is designed for installation on all pipelines. Especially in the most important places. It is designed to protect the pump from unwanted reverse water flow, which can damage it or completely disable it. This is quite important and significant not only for large industrial premises, but also for domestic water supply systems. So, what does the non-return valve for the pumping station provide, what are the advantages of the system in which it is used, and is it necessary to use it? All of this will be described later.
About pumps
Most pumps are installed horizontally, but not in those cases when it comes to a check valve designed to position the device vertically. And this is ensured by the fact that this device assembly with a coarse filter and gearbox is characterized by small dimensions, which allow installation work even in a rather narrow space - in a well or in a well. To more clearly and clearly understand what exactly is the importance of this element of shut-off valves, you need to familiarize yourself with such a concept as water hammer. This is a sharp return of the water flow, often occurring in the presence of damage in the pipeline.
About fixture
If you do the installation and connection of the pump station with your own hands, the schemes will help you determine how the check valve should be placed. Most often, it is installed in the immediate vicinity of the intake point to create the necessary pressure inside the system. The presence of a strainer is an additional aid in water treatment. It consists of a body, which is made of brass, all threaded connections must also be brass. Like all other types of modern valves, this device includes special rubber seals, and is also characterized by a spring design. The spring is usually made of stainless steel. There is a stopper plug, which is usually made of synthetic materials or metal. Most often, one check valve is installed for the pumping station, but there may be two if necessary.
Installation Features
A special valve is usually installed on the pressure pipe directly behind the pump. A check valve is usually installed right there to prevent backflow of water. What happens if the pump stops working. For him and the engine, reverse current is not particularly dangerous. Most often, in systems with several pumps, shutoff valves of this type are used to protect the station from flooding as a result of a pipe accident, as well as to protect pressure head drains from emptying.
If the diameter of the pipeline is up to 600 millimeters, then the check valve has one blind cover. For large diameters, a multi-leaf device with several round holes with covers is usually used. When the station is buried below ground level, check valves must be installed on the shut-off water lines outside it. If a pipe rupture occurs at the station, these devices will not allow flooding the building with a stream from pressurized water pipes. For the same purpose, the descent of water into the sewage system or to the nearest ravine is usually mounted (in case an accident occurs at the station water conduits). If there is no possibility for descent, then you need to install a special pump that will pump water, as well as a pit for it in the floor. Vacuum liquid ring devices, characterized by not very high productivity, are suitable for these purposes.
Design features
Check valves for heating, as well as for water supply, can have various design features. The spring-loaded design makes it easy to assemble and disassemble the fixture, as well as replace certain failed elements in it. The non-separable version of the device is exactly the same as the separable, with the difference that its body is soldered together with the strainer during the assembly process, so it is impossible to separate it. Check valves for heating and water supply must be of high quality. They should not pass water back at all, as this does not provide the proper level of safety. Typically, an installation-oriented fixture directly in front of the pump is not equipped with a strainer. The direction of installation completely depends on the direction of the arrow, which shows where the flow of water inside the pipeline should go.
Correct installation
If the check valve is not installed correctly, then you can forget about the automation of the pumping station, since you will constantly have to control everything yourself. If available, the stability and durability of the entire complex will be guaranteed. It is important to seal all joints of the suction pipe with a non-return valve. To do this, you can use flax or FUM tape. It is important to understand that all joints are under the constant influence of water, therefore it is necessary to ensure their quality, only in this case it can be expected that the check valve (brass) will last for a long time.
Price and reviews are two parameters that influence your choice. There are various options for the cost (an average of 200 to 1,500 rubles), so you can focus on the opinions of consumers. Quite often, brass valves are said to be of the highest quality of all.