How Diaphragm Regulators Work - Scuba Tech Tips: S17E14

Viewers asked how the flexible rubber disk works in a diaphragm regulator. Alec shows how the internal parts of a first stage diaphragm work.
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[@alaska4229]

Great demonstration of how the first stage works, thanks for the video Alec!

[@AlecPeirceScuba_SeaHunter]

Glad you liked it!
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[@jacquespoirier9071]

nice explanation
you,re an excellent teacher
it is a shame that this type of generic information is not a part of basic diving certification
Top me , it is asafety concers as such a knowledge car prevent a panic situation in the case of an equipment that is not performing as it should..
excellent topic
very good video

[@AlecPeirceScuba_SeaHunter]

Hi Jacques. Thank for the feedback. Today's Open Water courses are geared to getting certified with just enough info to get into the water. After that, Con Ed courses to learn the details of our sport. Glad you liked it. More to come.
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[@SummersideDiver]

Another very well done video. Your explanations are full of great detail and quite easy to follow. Thanks for sharing your knowledge with us and helping us to be better informed divers

[@AlecPeirceScuba_SeaHunter]

You're very welcome and thanks for watching.
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[@TheTurbinator]

Please post more long videos, we love these in dept information sessions.

[@AlecPeirceScuba_SeaHunter]

More to come!
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[@pablorivera376]

Excellent video, I have a question. I suppose that the air pressure is at 150 psi when the air gets outside the filter?
Or at least in the first chamber before reaching the diagram? Thanks!

[@AlecPeirceScuba_SeaHunter]

The pressure in the 2nd stage intermediate pressure (IP) can be from 120 to 150 psi depending on make. Just to make sure you're clear, tank air at say 3000 psi passed through the sintered air filter into the HP chamber and stops. Whey you inhale, it opens the diaphragm/piston chamber to let in HP air which is reduced to IP at 150 and down the 2nd stage how to your reg and mouth. Hope this helps.
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[@pablorivera376]

​@AlecPeirceScuba_SeaHunter thanks, so the pressure in the HP chamber after the air came out of the filter can be 3000psi?

[@Dive-D]

Hey Alec amazing video explanation! I was thinking if you could do a video in the future, about Dacor's Modular system 1st stages.

[@AlecPeirceScuba_SeaHunter]

If i can get more than the one I have now, will add it to the ideas list.
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[@pillar350]

As a new diver with only six dives about to complete my open water Sunday the eighth for my certification I have been binge watching your videos and I have learned so much on how and why first stages second stages, low pressure, intermediate pressure how the technical part works, although I do not plan on being a technical diver it’s nice to know how these things work These videos that you have posted throughout the years are invaluable

[@AlecPeirceScuba_SeaHunter]

Glad to know you’re interested in expanding your knowledge beyond the basics. Enjoy many years of diving fun.
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[@Kebekwoodcraft7375]

Great job 👏 I wouldn’t consider a spring as a moving part 😊

[@AlecPeirceScuba_SeaHunter]

I wanted viewers to think about it, just 2 moving parts in a piston, simple and reliable.
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[@Mike.4639]

25 ish year MK 17, going for another 25 , its probably the best.

[@AlecPeirceScuba_SeaHunter]

That one will last a loooooong time with love and diving. Thanks for watching.
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[@benheckendorn2696]

A great video again, Alec.
You explain it so easy so anyone understand even those who had any idea about tech. 👍

[@AlecPeirceScuba_SeaHunter]

Glad you enjoyed it and thanks for watching.
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[@davedonati206]

Hi Alec, an interesting topic & great explanation of theory!

[@AlecPeirceScuba_SeaHunter]

Awesome, thank you!
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[@ABCDiver]

excellent breakdown of the 1st stage. thanks!

[@AlecPeirceScuba_SeaHunter]

Glad it was helpful!
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[@chrisphilhower6029]

My Genesis Prana Regs use a Piston. And are Rated to 50F.

[@AlecPeirceScuba_SeaHunter]

Most regs today are rated to 50F/10C without modification. Anything colder needs ice diving training and gear. Go Pistons!
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[@E.H.Youssef]

❤❤👌👌

[@AlecPeirceScuba_SeaHunter]

Thank you.
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[@ivoryjohnson4662]

Thank you Mr Peirce

[@AlecPeirceScuba_SeaHunter]

Appreciate you watching and the feedback.
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[@daveturton1784]

interesting thanks

[@AlecPeirceScuba_SeaHunter]

You're welcome.
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[@ericvadekro8334]

Thanks!

[@AlecPeirceScuba_SeaHunter]

Much appreciate the feedback.
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