Spool Valves: How They Work and How to Read Their Symbols | Spool Valve Operation | 3/2 Spool Valve
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Do you know what is a 4/3 spool valve and how it works?
Are you able to read a complex spool valve symbol?
Can we use Normally Open or Normally Closed expressions for a directional control valve?
In a previous video, you learned the directional control valve classification and talked about their actuation methods as well.
👉 What is a Directional Control Valve ▶ • Directional Control Va...
In this video, I’m going to answer those questions and talk about a more common Directional Control Valves classification method in the automation industry that I strongly believe will help you a lot, in practice.
Spool valves as a subcategory of directional control valves are central to every hydraulic and pneumatic system.
For instance, they are a part of a scissors lift’s hydraulic power system. Or take our previous video’s example for a pneumatic spool valve to control the material coming out of a silo or a hopper.
👉 Directional Control Valve Working Animation (5/2 Solenoid Valve) ▶ upmation.com/directional-cont...
The general components of a spool valve are as follows:
- A spool which is a cylindrical component
- The operator which we have talked about it extensively in the previous video and of course, there might be more than one operator
- Body or housing
- Maybe springs on one or both ends
The spool moves within the bore of the housing. Some holes are machined on the body of the housing to open the fluid passages into or from the valve.
Some holes are machined within the bore of the housing that are known as ports. Spool Valve ports are connected to the other hydraulic or pneumatic circuit components.
The spool is a cylindrical shaft that as you see, has some lands and undercuts to block or open the paths for the fluid toward the power components in the circuit and vice versa.
The term ‘Directional Control Valve’ or the term ‘Spool Valve’ is a very general expression to describe a valve. This is a so-called 3/2 directional control valve or a 3/2 spool valve.
To be more specific, we use numbers. But, what do these numbers mean?
Please watch this video to find out and let us know what you think.
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Timestamps of this video:
00:00 Introduction and Preview
00:52 Spool Valve application examples and overview of a hydraulic system
01:55 Spool Valves inner components and structure
2:53 Why do we call it 3/2 Spool Valve (3/2 Solenoid Valve)?
4:33 How to read Spool Valve Symbols?
6:36 Spool Valve Types in Hydraulic and Pneumatic Systems
7:25 Normally Open vs. Normally Closed Solenoid Valve (Spool Valve)
9:13 Yet, another Spool Type Valve classification
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#valve #spoolvalve #automationindustry
Пікірлер: 51
I cannot thank you enough for these sorts of videos! You can just tell that you put a lot of time and effort into all of these.
@Upmation
Жыл бұрын
Hey, Darijan! It's great you like them! You're most welcome!
@razerimperator231
Жыл бұрын
I join your comment!
Excellent visual quality & The way you describe it is very inspiring to me. Thank You 😺
Hands down! The best explanation of spool valves ever.
@Upmation
Жыл бұрын
Thank you!
What an explanation... Mind Blowing❤❤❤
Perfect tutorial.very informative and easy to understand 💌 THANK YOU VERY MUCH for sharing your knowledge ❤️
@Upmation
Жыл бұрын
Thank you, Jayke! Glad you enjoyed it! You're most welcome!
Excellent video. Thanks Upmation
@Upmation
Жыл бұрын
You're very welcome! Thank you for your consistent support!
A really great video. Thank you!
@Upmation
Жыл бұрын
You're very welcome, Alex! Glad you liked it. Please stay tuned for more.
I really appreciate your hard works, they help me so much.
@Upmation
11 ай бұрын
You're quite welcome! Thank YOU for watching and we are happy we could help!
Excellent explanation, from Brazil thanks.
@Upmation
Жыл бұрын
Hey, Alexandre! Glad to have you here! You're very welcome! Please stay tuned and let us know of your suggestions and questions.
excellent content and very helpful thank you
@Upmation
Жыл бұрын
You're very welcome and thank you for your support! Please stay tuned for future videos.
I am very happy that I learned something today 😊🙏 thank you sir..,
@Upmation
Жыл бұрын
Anytime, Sara! Thank you for watching and happy learning!
So helpful thanks 😍😍
@Upmation
Жыл бұрын
You're very welcome, Jocyl! Please stay tuned and share this video on other social media.
Great Really helpful!!!
@Upmation
Жыл бұрын
It's fantastic to hear that! Happy to help! Please stay tuned for more.
What a great video.
@Upmation
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Thanks a lot, Ricardo! Please stay tuned and share this video with your friends and colleagues.
Good afternoon!Great video!
@Upmation
Жыл бұрын
Thanks for the visit! Please let us know if you have any suggestions or questions.
Thank you very much for all the very useful videos. What are the risks of a hydraulic motor?
Thanks a lot from Turkey Regards
@Upmation
Жыл бұрын
You are welcome, Sevil! Thank you for watching!
Great video, waiting for PCV
@Upmation
Жыл бұрын
Thanks a lot, Prasad!
Great video bro
@Upmation
Жыл бұрын
Appreciate it!
Thank you
@Upmation
11 ай бұрын
You're welcome! Happy to help!
This is great
@Upmation
Жыл бұрын
Thanks a lot! Glad you liked it!
Is there any possibility to repair directional spool valve GIV 50 ?
Is there any way to repair a pneumatic valve by opening the housing and replacing o-rings?
@Upmation
Жыл бұрын
Yes, there is. By dismantling the actuator(s) you can remove the sealings and bring out the spool and its O-rings for changing, cleaning the rust and wear, lubricating or any sort of repair. Hope this answers your question.
hai can you make one separate video for the hydraulic symbols 😢
@Upmation
Жыл бұрын
Thanks for your suggestion! I will definitely pass your suggestion to the team.
Sir is it okay not to use control valve.pump to boom cylinder. Is the orrifice of the valve has signicant into hydrauli cercuit?
@Upmation
Жыл бұрын
No. You have to use the DCV.
@ Upmation But please can you place the "JOIN" button beside the "SUBSCRIBE" button on your channel so that we can contribute to sustain this (our) channel? Thanks.
what is the blue lever for?
@Upmation
Жыл бұрын
It is used for exciting the valve mechanically, without connecting an electrical voltage to the valve. For instance, it could be useful when you want to ensure about the functionality of the valve's mechanical parts.
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