Watering System Solenoid Valve

Watering System Solenoid Valve

Whether it’s a sprinkler valve in your garden or the one used for dispensing drops of ink in a printer, solenoid valves perform similar tasks: They are electromagnets that can create and hold tremendous amounts of pressure by attracting or repelling a larger diaphragm.watering system solenoid valve The magic happens because of a clever trick performed by the coil, which is actually made up of two separate parts: an armature and a core.

The armature is made of a ferromagnetic metal that can be attracted or repelled by the magnetic field created by the energized coil. When the coil is energised, it creates a temporary magnetic field that attracts or repels the armature coaxially, causing it to move in a linear fashion across the valve body, opening or closing flow paths as it does so.

A sleeve or housing surrounds the armature and core, protecting them from damage caused by exposure to water and other contaminants. It also provides a means for the armature and core to connect with each other, allowing the magnetic fields generated by the energized coil to interact with each other. When the armature is moving within its housing, it pulls the core into it, creating an electromagnetic field that allows the plunger to seal or open the valve ports as needed.

If the armature is not pulling the core in, or is pulling it out too quickly, there may be mechanical problems with the valve. It’s important that the controller apply full DC power to the coil for a long enough time for the plunger to engage and seal properly.

The electrical specifications of a solenoid valve are also very important to ensure compatibility with the irrigation controller and power supply. It is important to select a solenoid valve that is rated for the maximum voltage and amperage required for the system.

Many people have trouble with their watering systems, especially during dry weather. In addition to ensuring that the control box is programmed correctly, it’s also important to check the watering system solenoid valves regularly to make sure they are functioning correctly. Many problems can be solved by simply switching a valve to the ‘on’ position if it is currently in the ‘off’ or ‘closed’ position. However, this overrides the programming set up through the controller and is not recommended unless it is necessary.

Another common problem occurs when a watering system will not irrigate when commanded by the controller. In this case, it’s often caused by a faulty solenoid valve. To fix this, you will need to check the electrical signal, and possibly replace it. If the problem is mechanical, you will need to unblock a bleed screw and drain any pressurised water from the upper part of the valve. This is achieved by turning the screw counter-clockwise – around a quarter turn is usually sufficient. Be careful not to over-turn the screw, as this could cause damage and allow water to escape from the lower pressurised section of the valve.

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