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how to install electric solenoid valve

Water solenoid valve installation tutorial



Before you start installing solenoid valves, be sure to read the manual and safety instructions according to the brand and type of solenoid valve, so that the purchased solenoid valve fits your work and needs and is not dangerous for the safety of the system.

In addition to the catalog, you can check the label on the body and power of the solenoid valve to find out the specifications of the solenoid valve.

And is the coil voltage? The following figure shows an example of an electric valve label with explanations.

Plumbing system for irrigation solenoid valve



Make sure the circuit is not under pressure and the system is off, and also allow the system to cool down after switching off.
Inspect pipes for corrosion, chips, and dust. It is recommended to thoroughly wash the pipes before installing the solenoid valve.

Fine particles and impurities can enter the pipe and cause the pipe to clog or leak.

Impurity and dirt in the pipes is one of the main reasons for the malfunction of the solenoid valves. This problem can be solved by opening the pipes and washing thoroughly, but always prevent dust from entering the system.

If you are not sure about the cleanliness of the system, it is recommended that you install a filter before the valve inlet, depending on the type of fluid passing through the solenoid valve.

Standard pipe size table for agricultural electric valve installation

Most sizes of solenoid valves used are 1/8 to 2 inches, which should be selected and installed according to the size of the solenoid valve port. The standard pipe diameters are given in the table below.

The size of the solenoid valve in inches

Pipe diameter in millimeters

1/8

4 to 8

1/4

6 to 12

3/8

8 to 15

1/2

10 to 16

3/4

15 to 22

1

20 to 30

1/21

25 to 50

2

40 to 60

 

Electric valve position



It is recommended to install the valve in a dry environment with good ventilation. Because solenoid valves heat up during use, there must be enough space around the solenoid valve to cool them.

Most solenoid valves can only be used in one direction to pass fluid. When installing the solenoid valve, check the inlet and outlet directions. Often the correct direction of flow is indicated by an arrow on the valve body.

The pipes on both sides of the valve must be tightly closed. Use the right wrench to close the valve and pipes.

Avoid unnecessary loads and pressures on the system.

The best mounting position for the solenoid valve is that the solenoid valve is fully facing upwards and creates a 90-degree angle as shown below. This reduces the risk of dirt and grime accumulating in the valve.

 

Installing the bobbin on water solenoid valve


Put the bobbin on the solenoid shaft of the solenoid valve. Under no circumstances should you connect the coil to the power supply when it is not installed on the solenoid valve, as it is possible for the coil to burn out.

To make sure you have installed the bobbin correctly, refer to the electric valve catalog.

Fasten the bobbin lock nut completely so that the bobbin does not rotate or vibrate during operation. But be careful not to tighten the nut too much, as there is a risk of damage to the bowel.

Usually the torque required to fasten the bobbin nut is 5 Nm.

How to install an agricultural solenoid valve socket


Use a round cable and connect terminals 1 and 2 to the power supply.

Always connect the ground wire. Do not use the pipe to connect to the ground.

Connect the socket to the solenoid coil. Make sure there is no moisture between the coil and the socket. The torque required to close the socket screw is 5 Nm.

Lay the cable so that moisture does not enter the socket on the cable. All of the above are shown in the figure below.

Launching electric solenoid valve


Only turn on the power when you have installed the valve and coil properly. Note that there may be pressure on the system.
The solenoid valve heats up during use.
After installing the valve, if the solenoid valve does not work properly, in most cases, these defects can be fixed. The reasons for these defects are as follows:

The solenoid valve is blocked due to dust and dirt. This defect is due to the infiltration of dust and impurities into the inlet and outlet ports of the solenoid valve.

Although the pipes look clean when installed, there may be items such as chips and rust, rust particles inside the pipes. If this is the case after cleaning the pipe, open the valve and thoroughly clean the components.


To disassemble and reassemble valve parts, refer to its manual.

Connect the solenoid valve in the wrong direction and the wrong valve inlet and outlet are installed. Check the correct direction of the arrow on the body and install the valve in reverse.

You have experienced the blue hammer phenomenon. Blue hammers occur in small diameter pipes due to the passage of water through capacity and high pressure. There are several solutions to this problem:

Increase the diameter of the pipes to reduce fluid velocity.
Reduce fluid pressure before entering the solenoid valve with a pressure reducing valve such as a regulator.
Use neutral hoses or shock absorbers to neutralize the blue hammer.
Use an electric valve with a longer reaction. This reduces the pressure on the solenoid valve.

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