Electromagnetic valve for watering by hands

The main thing in gardening is to ensure regular watering of the site. Without it, any garden can not stand even one season. Manual watering requires a lot of time and labor. For a good garden, a modern water supply system is needed, where an important element is the electromagnetic valve for irrigation.

Advantages of automatic watering

The main elements of the irrigation system are as follows:

1. Watering heads - from fan small to powerful impulse and rotary.
2. Electromagnetic valves for automatic irrigation.
3. Pipeline for distribution of flows.
4. Pump station, providing the necessary pressure in the system.
5. Storage tank for constant water supply to the system.
6. Hydrants to connect to the system for different purposes. The advantage of auto-watering is expressed in the following:

• Dosing of water consumption;
• Uniformity of application;
• Economy (watering at night reduces evaporation of moisture);
• The system is underground;
• Saves labor and time gardener.

The purpose of the solenoid valve

Electromagnetic valve for irrigation is always needed, even if there is no irrigation system. It is applied together with a timer that includes it at the right time. Especially it is needed to fill the storage tank. When the water is supplied according to the schedule, the timer opens the valve and the tank is filled. It is advisable at the same time to water the area. All this is done in the absence of the master. He can only pour hard-to-reach places.

The main purpose of the valve is to supply water to the irrigation system at a given time. For this purpose, a 1-inch device is used that transmits 50-100 l / min at a pressure of up to 10 atm. It can also be used in short watering areas, because the built-in regulator allows you to adjust the required local flow. It is suitable for watering with spray and drip when the pressure in the system is weak.

One or more valves are installed on the drain cushion from the gravel and covered with a box. This can be done in any convenient place.

The device of the electromagnetic valve

The valve is very simple. It contains the following details.

1. Housing with a cover made of metal or polymer.
2. Shutter with rods and plungers.
3. Solenoid in sealed housing.

The external thread of the inlet and outlet nozzles is 1/4 ^" and more, depending on the flow rate of the liquid, the least amount of water passes through the solenoid valve for drip irrigation .The small-sized devices are built into the pipeline with water and run from a timer that specifies different irrigation modes.

Recently there were models combined with the switch. You can purchase through the online store company "Yulmart": solenoid valve for irrigation C 1060 plus GARDENA, which has become popular. It automatically switches the water supply to the garden irrigation.

Solenoid valve for irrigation: operation diagram

The water valve is convenient to use because it can serve as a conventional water tap when power is cut off. To open it, the control solenoid turns a quarter turn.

When the coil is disconnected, the water passage is blocked. When triggered, when the core is retracted, the valve opening opens. Through it, water enters the watering or into the tank. To close the supply of fluid, the coil is disconnected, and the spring again returns the core of the electromagnet to its original position.

The solenoid valves operate at different supply voltages (12 V, 24 V, ~ 220 V). Devices are also normally open and pulse (switching is made by the control pulse from one position to another).

The valve is installed in the water pipe. A control cable is laid to it. A timer is connected to the outlet and is adjusted at the right time. If there are power failures in the mains, the time setting must be checked periodically or an autonomous power source, such as a battery, used.

Electromagnetic Valve

Many know a convenient and inexpensive valve electromagnetic for watering NT8048DC12V with the following characteristics:

• D.C;
• Pressure - 0,8 MPa;
• Pipe diameter - 1/2 ^" ;
• Throughput - 25 l / min;
• Water temperature - no more than 50 ⁰ С.

The advantage of the valve is the maintenance of its open by flow of fluid, rather than an electromagnet. During operation, the strainer must be periodically cleaned. The valve is the basis of irrigation and is completely electrically safe due to low voltage. The shock is completely eliminated. Power is provided from the battery or from the network through galvanic isolation.

Connecting the solenoid valve to the garden irrigation system

For a small garden, a solenoid valve for watering -12 volts (NT8048) is best. It is safe, because when water hits the contacts and when touching with wet hands, the shock does not happen. The possibility of its connection to a battery of 15 AC allows you to work without recharging for a week. It's also easy to make power from the shield through the AC adapter.

The water supply is provided from a storage tank installed at a height of at least 2 m. The water in it is recruited from a centralized system. The filling is controlled by a float sensor connected to the plug valve. The absence of a pump removes many problems. Watering the garden by gravity occurs for several hours and it does not need to be controlled. All control irrigation will take on an electronic timer, connected to the outlet.

The valve is installed in the pressure line of the irrigation system. The coil of the electromagnet is connected to the output of the adapter via the cable by means of terminals. They can be closed from above with a sealant to protect them from water.

The entire device is conveniently located in the utility room, where you can hold the outlet. The timer, adapter and coil of the electromagnet are connected to it in series. It remains to adjust the watering mode. Time is chosen in the morning and in the evening, so that there is a minimum of evaporation, and the plants do not burn in the sun. The irrigation time is set, which is then selected experimentally.

Different types of plants should be watered differently. The system can be gradually improved by adding new valves. To each of them you can connect your timer or install a common microcontroller, setting the program of irrigation.

On the outflow pipelines, it is possible to install valves from old washing machines, which will allow us to economically save on the cost of the irrigation system.

Solenoid valve for watering by own hands

Electric valves have a high price, but you can find cheaper solutions. The most accessible here is the valve from a failed washing machine. His device is as follows:

• Plastic housing;
• A rubber membrane;
• Electromagnet with a core;
• spring;
• Screen filter;
• Gasket.

The mechanism has a high sensitivity to dirt and can easily fail. It is protected by a strainer, but for the garden system, it is advisable to put another one at the valve inlet, since your own will be quickly clogged.

The solenoid valve is normally closed, i.e. when it is off, it closes the water. When switched on, the core is retracted, raising the rubber membrane, and passes the water.

To remove contaminated liquids washing machine, a drain valve is used, arranged similarly. The principle of action is the same and can be successfully applied for irrigation.

Electromagnetic valves for washing machines have the following characteristics:

• Power supply voltage - 220 V;
• Power - 8 W;
• Water pressure - up to 10 atm;
• The diameter of the filling hose is 3/4 ^" ;
• Flow rate - 10 l / min.

Faults and repairs

Conclusion

On the maintenance of the garden and the garden takes a lot of time and effort. The real savior for the owner is the electromagnetic valve for irrigation, which serves to fill the storage tank in its absence, pumping water from the well and especially in the irrigation system.