A solenoid valve is a mechanical electronic device that opens and closes the flow of a medium. Solenoid valve combines two main units: a valve with a through hole and an electromagnet (solenoid) with a piston (core). A special disc is installed in the hole, which blocks or opens the flows. Opening or closing occurs due to the movement of the core, which, when the coil is energized, is drawn into the solenoid.
Kinds of solenoid valves
A distinction is made between normally closed and normally open valves. The view directly depends on the location of the solenoid at the time of the power outage.
Devices are also classified as direct and indirect valves. The direct current flow is capable of changing the position of the diaphragm, thereby opening or closing the hole. Indirect solenoid valve at the moment of power supply is triggered, including another non-electromagnetic valve.
Direct solenoid valves are the most popular among them, as they provide more efficient operative response of the system. Usually they are used in the case of a small flow of air or liquid, since with a higher quantity it will be necessary to significantly increase the power of the solenoid, and this will lead to an increase in the cost of production. Accordingly, the use of indirect solenoid valves is more preferable when there is a large flow rate of the working medium.
Applications
Electromagnetic solenoid valves are used in cases where there is a need to control the flows of various working media in pipelines. The working environment includes: steam, hot and cold water, air flows. Such devices are always mounted on pipes. Due to their compactness, solenoid valves can be installed almost anywhere. The main requirement for efficient operation of the device is to ensure free access, for quick opening and closing.
Valves from different manufacturers have completely different performance characteristics. In addition, each model is designed to work in a specific environment and environment.
Solenoid valves are used in various fields:
- For watering. With the built-in timer, you can provide automatic watering of a garden plot, greenhouse, field farm, etc.
- Thanks to the timer, the valves are able to control the water supply to public toilets, showers and bathrooms.
- Boiler units. The valve automatically regulates the water supply to hot water tanks and steam boilers.
- Expansion systems. In heating systems, water must be periodically replenished, since due to high temperatures, it tends to evaporate. By means of a valve, water is supplied automatically and regularly.
- For dosing, they are effectively used in mixing processes where there is a periodic flow of water to the main product.
- In washing systems, solenoid valves are used to drain the water. For example, when washing cars or washing machines.
The article was prepared based on the site materials http://kipservis.ru
