Teaching: Relief Valve Basics

Question. @40.11 pressure below 950psi keeps the poppet closed because of pressure balanced through the orifice. Then that means it should balance after 950psi. But it doesn't why?

Great teaching skills. Thanks for sharing. Looking forward to find out more about lunchboxsessions

Information that i needed!! 🙏

we did replace control block )whole set) ...than found main drum pay out not functioning but pay in / swing and boom functioning were still functioning...please advise thanks...

sir please explain the working of Accumulator safety block

Awesome 👍

very bad and annoying

thank you very much
Great explanation

I learn a lot from this lecture. Thanks for sharing!

Bueno

Thanks sir, was one my best classes that I've ever been at.

Thanks sir ... Please spread your knowledge ...💓

Instructor is awesome. Not demeaning to the students at all, but instead explains everything to help them understand. So to me, I knew that series of dots was the spring in the relief valve. But for the student who asked, the instructor not only confirmed that it was the spring. But also explained that it’s the industry symbol for a spring cutaway.
I respect the hell out of that.

Nice video. Can please send me the drawings of one PRV and the combined drawing with the two PRV valve. I like to understand the design concept and the appropriate selection. Thanks.

You're a very good teacher. I'm moving into a new roll at a very large aerospace company where I will be calibrating hydraulic systems. I am being trained on site by an individual with over 35+ years of experience in this field and I am using your video to help me "brush up" before I start in 2 weeks. I have 15 years in aerospace working on building complex tools for precision drilling on the structure. Now I am moving into metrology / calibration. Thank you for your amazing ability to teach and your expansive knowledge!

Thanks sir for uploading relief valve

Really Enjoyed the Lesson. Education has no End.

No mention of the three vents? Where do they end up?

Hi sir I am hydraulic press break ( sheet folding ) machine two cylinder how to work same speed and up and down

Hi sir I am kannan ,Chennai India, hydraulic system normal running time oil high temperature, how can normal temperature without use air cooler,water cooler, and jiller units ,

Ivan and I have similar hair styles lol

I did love this, seeing interactions between Carl and curious people such as I.

Static and dynamic pressure, flow , uncompressed and orifice. After this lesson, I understand how balanced main poppet works. Load increase, static pressure increase, pilot poppet crack, flow created,
Pressure difference between orifice inlet and outlet, main poppet starting open.
This lunchbox session is great. Thank you.

I dont understand why the relief valve let the fluid go true at 800psi if it is set to 1000psi ???

Hello sir,
Good morning.

I'm from Bangladesh.

Thanks sir for uploading such a great video on the explanation of relief valve.🙏

How can I too be on the session ? Please include me.. 🖐🏻

Thank you very much

Exccellent

Thankyou!

I do have a question
What will happen if I replace a gear hydraulic pump with 22 cm/rev to 42 cm/rev
What will happen in my system 🤔?
Another question is the relive valve gonna send the unneeded oil to the tank ?

السلام عليكم نريد الترجمة إلي العربي وشكرا

your sessions are very informative and properly broken down. Gained a lot from you sir and really appreciate the way you deliver the knowledge and makes us ease to understand. Lot more misconceptions have been cleared, in my learning.

This was great!!

it's awesome that you guys posted this for everyone! helped me out a lot! appreciated!

Please subtitle all videos in Korean.

Great session!

Pumps concrete??

Do you have any simulations for a differential poppet type double relief valve?

Is there a name for valves that are a combination of basic valves? Such as the piloted relief valve with an orifice and two relief valves as one component.

Parabéns pelo seu trabalho, 55 16 993673131

Please make a video with two cylinder in different pressure and pilot oppreted check volve

nice lessons

Nice¡¡¡

Why did the pilot valve start oil leakage to tank at 950bar? Shouldn't it have started at 500bar since it is similar to the relief valve without a pilot in previous slide?

Good lesson, Im student of Diploma in Hydraulic & Pneumatic in Sri Lanka 🇱🇰

In a balance piston type relief valve,there’s a pilot port.if pilot pressure is applied the valve functions as unloading valve?am i correct?

How to adjust a relief valve ?

Really enjoyed the lesson and learnt something useful! Would love to see videos on NG 6 or NG 10 stack/sandwich valve configurations for PT dcv for a single ram or multi ram configurations. Thanks and please keep em coming!

Dear sir i watching your video so good.knowledgable video but after downloaded any video clearty not good voice is ok.