Irrigation solenoid valve is an electrically controlled valve to regulate water flow. By applying voltage to the coil, the valve opens or closes and liquid can flow through it. To solenoid valves, electromagnetic valves, faucets, solenoid valves Also called an electric valve. Rain Bird برl solenoid valves are designed for irrigation. They have a sturdy structure and are optionally equipped with manual control, so the desired current can be adjusted. Most models have override function, the valve can be opened manually if needed. In addition, they are equipped with soil particle filters. Rain Bird valves come with a 24 volt AC (AC) coil. Most irrigation controllers operate on 24V AC. If 24V AC is not available, a general solenoid can be selected from the fluid control. These valves are available with a wide selection of control voltages: 24V AC, 230V AC, 12VD, 24VD and 120V AC.
The principle of operation of the solenoid valve
A number of solenoid valves work with different types of operating principles such as direct, semi-direct and indirect. Direct (half) valves operate at 0 bar pressure, while indirect valves require a minimum pressure for proper operation. This means that these valves use feed pressure to open and close the milk membrane. This allows a small coil to run a large stream of water. With this principle of operation, it is necessary to have a minimum pressure of 0.5 bar in the feed pipe. It is not a problem if the valve is connected to the main water or pump, but if a non-pressure feed tank is used, the pressure can be too low to open and close the valve properly. In this case, a semi-straight solenoid valve, or a solenoid valve, is a better choice. Ball valves are less sensitive to contamination, consume less power but are more expensive and should be installed in a dry place.
Irrigation solenoid valves with clean water work properly. When the water is dirty, the valve can be easily blocked, resulting in potential leakage or unreliable performance. In addition, life expectancy may be reduced due to increased wear. To prevent this, a filter must be installed on the supply side (for particles <500 μm). Alternatively, an electric ball valve can be used, they have a stronger structure and are therefore less sensitive to contamination.
Installation of irrigation solenoid valve
Automatic watering saves time and water. Regular and continuous watering of a garden is important. This requires discipline and time. This is why many people use automatic irrigation systems. It has obvious advantages:
- The irrigation system works when you are not at home.
- Less evaporation, because there is irrigation before sunrise.
- Irrigation saves time.
- There is no unnecessary irrigation with rain sensor.
- In general, the garden is in better condition with careful irrigation.
Ost irrigation systems work with a main supply pipe that branches to different areas. Areas should be determined based on the required water capacity, location and type of vegetation. Each area is equipped with a solenoid valve. The solenoid valves are mounted in a central place or in the valve box, so they are protected and out of sight. In addition to the water supply pipes, a control cable is also required. Each solenoid valve is connected to an irrigation controller. In this way, each area can be controlled. Irrigation controller can be programmed with a sprinkler program. If used in a more remote or water-sensitive area with a water tank, a float switch is often used to control the water level and stimulate the controller / valve.
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