Spool Valves: How They Work and How to Read Their Symbols | Spool Valve Operation | 3/2 Spool Valve
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- Опубликовано: 7 июл 2024
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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
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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.
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Excellent visual quality & The way you describe it is very inspiring to me. Thank You 😺
Hands down! The best explanation of spool valves ever.
Thank you!
What an explanation... Mind Blowing❤❤❤
Perfect tutorial.very informative and easy to understand 💌 THANK YOU VERY MUCH for sharing your knowledge ❤️
Thank you, Jayke! Glad you enjoyed it! You're most welcome!
Excellent video. Thanks Upmation
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A really great video. Thank you!
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.
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Excellent explanation, from Brazil thanks.
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So helpful thanks 😍😍
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Great Really helpful!!!
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excellent content and very helpful
thank you
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Thank you
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Thank you very much for all the very useful videos.
What are the risks of a hydraulic motor?
I am very happy that I learned something today 😊🙏 thank you sir..,
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What a great video.
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Regards
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This is great
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Good afternoon!Great video!
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Great video, waiting for PCV
Thanks a lot, Prasad!
Great video bro
Appreciate 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?
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 😢
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?
No. You have to use the DCV.
what is the blue lever for?
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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