Solenoid Valve Parts Explained | Tameson

In this video, you will learn about the main parts of a 2/2-way solenoid valve. What is a plunger in a solenoid valve used for and how is media regulated through the valve? Check out our 2-way solenoid valve product range here ► https://tameson.com/collections/2-way...
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Time codes:
00:00 - Intro
00:36 - The ports
01:22 - The coil
02:11 - Normally closed
02:29 - Normally open
04:01 - Outro
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Hey, I’m Barend from Tameson, and today we’re going to discuss the main parts of a 2/2- way
solenoid valve.

A solenoid valve is an electromagnetically operated valve that allows you to autonomously and remotely control the fluid flow within a system. The different parts of a solenoid valve work together to ensure the optimal operation of the valve. You need to take proper care to ensure that the parts are installed correctly, as missing or incorrectly installed components can cause the valve to malfunction.

So, what’s inside a 2/2-way solenoid valve? Let’s find out!

First, lets look at the ports.
The inlet port is where the media enters the solenoid valve, typically from a connected pipe or hose.

Since it is a 2/2-way valve, the other port is the outlet port. The regulated fluid flows out of the valve through the outlet port. Or, in simpler words, the outlet port receives the media that has been allowed to flow through the valve and continue through the system.

Important note on the ports, they can not operate in reverse. There is typically an arrow on the valve housing showing the media flow path.

The orifice connects the inlet and outlet ports. This is an opening in the valve, which is opened and closed by the plunger. The control of this opening is what allows for the solenoid valve to regulate the media, allowing it to flow or not flow from the inlet to outlet.

Next, we have the solenoid coil. The solenoid coil consists of several turns of enameled wire, taking a cylindrical shape and hollow from the inside. It is connected to a power source, typically through a connector. When current flows through the coil, a corresponding magnetic field is produced. This magnetic field is what controls the position of the next component, the plunger.

The plunger, or piston, is usually cylindrical in shape and made of a ferromagnetic material situated within the hollow space inside of the solenoid coil. It moves up and down to close or open the valve's orifice. The electromagnetic field produced from the solenoid coil moves the plunger either up or down, and another component, a spring, moves it in the opposite direction.
For a normally closed valve, when there is no power, the spring is pushing the plunger down to close the orifice. When power is applied, the electromagnetic force overcomes the spring force, pulling the plunger up, opening the orifice, and allowing media to flow from the inlet to the outlet.
For a normally open valve, when there is no power, the spring is pulling the plunger up opening the orifice and allowing media to flow from the inlet to the outlet. When power is applied, the magnetic force forces the plunger down and closes the orifice.

Guiding the piston is an armature tube, which is a hollow component that ensures the plunger is in the proper position. Any flaws in the tube can restrict the motion of the plunger.

To properly close the orifice, there is a seal on the bottom of the plunger. Always ensure that the material of the seal is compatible with the media as the seal comes in contact with the media.
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