How solenoid valve works - complete guide

Introduction to how solenoid valve works  :

How solenoid valve works - A solenoid valve is an electromechanically worked valve. Solenoid valves vary in the attributes of the electric flow they use. The quality of the attractive field they create, the component they use to direct the liquid, and the sort and attributes of liquid they control.

Introduction to solenoid valve
Solenoid valve

In this article , we're going to be learning the nuts and bolts of how solenoid valve works . Coming up, what do they resemble? For what reason would they say they are utilized? Where are they utilized? What's more, how accomplish they work? 

Solenoid valves are utilized to convert electrical vitality into mechanical vitality. Solenoid valves have very a distinctive look about them. As you would expect, they have the valve body,  yet on the top they have a square, which will have a few links coming out once the valve is introduced. The top part is the solenoid, and the base part is the valve, consequently making  The shape variety depends on the limit of the valve, the weight it's working with, and the distinctive inner components, which we'll glance at later on in this article . 

For what reason do we use solenoid valves?

 Well these valves allow engineers to self-governingly and remotely control the flow of liquid inside a framework. This liquid can be a fluid or a gas, for instance, water, air, natural gas, oil, steam, refrigerant, and so forth. The rundown continues forever. The solenoid curl on the topis used to work the valve by going an electrical current through it to make an electromagnetic field and work the valve. This implies, on the off chance that it is connected to a controller, it tends to be worked self-governingly and remotely by a PC, without the requirement for engineers to genuinely go around, opening and shutting valves. This permits frameworks to run substantially more proficiently and securely. 

So where do we use or find solenoid valves? 

The short answer is all over the place. Solenoid valves can be found in all things, from clothes washers up to space rockets, despite the fact that we're going to focus on the mechanical and HVAC applications for this article . How about we view a few models. In business refrigeration frame works, we're in all likelihood going to discover at any rate one solenoid valve in the framework, and it's normally found in the fluid line close to the development valve. 

So where do we use or find solenoid valves
Solenoid valve 

You can see this model here from the air taking care of unit which I was as of late dealing with. This has a two fold direct expansion cooling curl inside to control the temperature of the air being sent around the structure. The top development valve and cooling loop is consistently on when the framework works. Be that as it may, the second expansion valve and cooling loop just enter the mid year, when the cooling load is excessively huge for the single curl to deal with.

Applications :

 The solenoid valve is accordingly utilized here to segregate the second coil and the extension valve until it is required. The controller then sends a sign to the valve to open and provide the extra cooling. 

Another very common application for solenoid valves in refrigeration frameworks is in the hot gas defrost line to control the progression of hot refrigerant into the evaporator during the defrost cycle. At the point when the dampness noticeable all around consolidates on the containers of the evaporator, it will freeze and cause a development of ice. We have to expel this to ensure proficient activity, so we open the solenoid valve to send hot refrigerant from the blower through the evaporator instead of the condenser. At that point, once the defrost has finished, the solenoid valve shuts and the framework proceeds as ordinary in cooling mode.

 In modern applications,we can utilize these valves to correctly control the flow and blending of liquids, for instance, to pour a perfect measure of bubbly beverage into a container on a creation line. We may likewise find solenoid valves being utilized in a creation line to detect and forestall spills. On the off chance that a sensor identifies a leak from the pipework, at that point a controller will tell the solenoid valve to near shut that part of the creation line off and forestall item being squandered and furthermore ensure the manufacturing hardware until architects can arrive and fix it.

 So how accomplish they work? 

There are a couple variations in how solenoid valve works , contingent upon the necessary limit and the weights it's working with. We're going to concentrate on the directly worked valves, which is the most straight forward rendition. With a direct worked valve, we have the solenoid on top, which is essentially a loop of wire. 

As you may have seen in our electrical recordings, when you go an electrical current through a loop, we create an electromagnetic field . This attractive field is what we'll use to control the valve. We have two sorts of valve, the ordinarily open and the typically shut sort.

 How about we take a gander at the normally closed type first. So inside the valve we have the armature. The solenoid is set over this and totally encompasses the armature with the goal that it's at the centre of the attractive field. Inside the chamber of the armature is the unclogger and spring. The spring pushes the unclogger down in an ordinarily shut sort valve. 


Since the unclogger is pushed by the spring, it will sit in the down situation to close the valve uncertainly. Be that as it may, on the off chance that the loop receives an electrical  flow, at that point it would generate an electromagnetic field, and this attractive field passes through the unclogger and will make it move upwards, against the spring, therefore opening the valve. 

At the focal point of the curl , the attractive field lines are the most smaller, and in this way the most grounded. This is the reason we place the plunger in the inside. When the electrical flow is halted, at that point the attractive field vanishes and the spring will force the unclogger down again to close the valve. With regularly open valves, we again have the coil sitting around the armature, yet this time the spring pushes the unclogger in an upwards position so that the valve is consistently open, except if the solenoid curl is controlled on.


 There are a couple of various structures, yet one of the easiest to comprehend is on the off chance that we go a current through the loop the other way, it again makes an electromagnetic field , however this time the field pushes the unclogger as opposed to pulling it. 

At the point when the unclogger is pushed, it will close the valve and stop the progression of liquid in the framework. At the point when the electrical flow is halted, the spring will then force the unclogger back to the upwards position and open the valve once more. In this extremely straight forward form, the heading of the current streaming in the loop is the thing that decides whether the curl delivers a pulling or pushing power on the unclogger. 

Presently we're going to take a gander at that in a lot more noteworthy detail in our next article , and we're going to even make a basic solenoid loop ourselves to perceive how this works. 


Solenoid valves are normally hearty and solid, anyway there can be times when a difficult will happen. 

Typically, the issues a solenoid valve will run into will be uncommon. For whatever length of time that the detail is right, the valve should fit the application impeccably.

Would you be able to consider any interesting application for these valves? Provided that this is true, at that point please let me know in the remarks segment down beneath. Alright, folks, that is it for this article that is how solenoid valve works  . yet on the off chance that you need to proceed with your learning please visit physics guide


  1. I wanted to thank you for this great Information and knowledge, I definitely loved every little bit of it. I have you bookmarked your web site to check out the latest stuff you post. Your blog is eye-catching. I get pleasure from it. Thanks for sharing this beautiful piece of writing with me, get more information at pn25 ball valve for more Oshwin Overseas related information and knowledge.

  2. Your contents are completely awesome and share worthy. I really appreciate your efforts that you put on this. Keep sharing. For more duplex pipe manufacturer in India related information visit Perfect Impex

  3. After going through your contents I realize that this is the best of my knowledge as it provides the best information and suggestions. This is very helpful and share worthy. If you are looking for the best 2 way stainless steel ball valve manufacturer in india then visit Rache Process Equipment. Keep sharing more.

  4. I truly appreciate this post. I’ve been looking everywhere for this! Thank goodness I found it on Bing. You’ve made my day! Thank you again
    Triple Offset Butterfly Valve Manufacturer In USA

  5. This post is gives very useful tips for us which is effective our thoughts. Define step by step process that easily understand by us ASTM A106 Grade B Pipe If you wants more related services then must visit Kanak Metal & Alloys.

  6. Your all tips are very helpful and your blog is very informative, thanks for shared that awesome blogs with us. Visit Alloy Steel Pipe suppliers for more related information and knowledge.

  7. Thanks for taking the time to share this article here. Your article is very informative. If anyone looking for the Stainless Steel Pipe suppliers, Visit Victor Steel.

  8. Thanks for such a pleasant post. This post loaded with lots of useful information. Keep it up. If you are looking for the best information and suggestions related to Copper Nickel Fasteners then visit Jignesh Steel.

  9. Hello there, this is the fantastic post and I am very inspire from it, the title and the contents which are in the mid are really share worthy and have value. But there is lack of some useful tips for that I would like to share a website which completely full of useful information on related topic. If you are looking for the best nickel alloy fasteners manufacturers then visit Jignesh Steel. Keep sharing more.


Post a Comment

Previous Post Next Post