Tank Valves - J or K - Vintage Scuba: S01E05
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- Опубликовано: 30 июл 2024
- Alec explains the history and myths of scuba tank valves.
** In this episode of Vintage Scuba **
- a 1960 Voit galvanized steel scuba tank with a "pillar" valve
- there were no aluminum tanks in the early days, too expensive
- how modern tank valves solved early reliability problems
- today, recreational divers all use a "K" valves
- if your instructor told you to open the tank valve all the way then close it a little bit, that is wrong today
- all early divers used a "J" valve with a spring loaded constant reserve to release the last 300 psi
- early pressure gauges only checked surface tank pressure, there were no submersible pressure gauges
- one of the first SPG's, a 1962 SeaView by Sports Ways
- explanation of how a J valve works underwater
- the first SPG's used mechanical indicators
- example of Sam Lecocq's, founder of Sportsways, first practical SPG
- Rene Bussoz's book 1956 "Diving with the Aqua-Lung" for two hose regulators
- a rare early dive catalog showing the K and J valves
**** Alec Peirce Scuba ****
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you are living history Alec. I love vintage scuba more than anything. I appreciate learning knowledge and have a chance to see real vintage scuba equipment from you collection. thank you for sharing
More to come! I still have lots of stories to share.
A.
Haha keeping the videos short didn't work out so well here. I don't mind the longer videos. I like sitting down and learning about all this stuff! It is really need to learn about and a lot of it is much before my time.
Yah. Pretty funny. But I am trying. I think I just need to choose very short topics.
Thanks for watching. Alec
Your enthuiasm is refreshing. As a boy I was a Mike Nelson fan here in old germany. Born 53. Of course also Hans Hass and Jacques Cousteau. Spend my youth with a lot of snorkeling and freediving in der Flensburger Förde. It seems in those days we had more romantic dreams about an positiv advanced future.
Me too Lothar. Where are our underwater cities?
A
@@AlecPeirceScuba_SeaHunter Oh, what a good point to make. If we would have those cities there would be proberly more respekt for the Oceans and not just green talking like ouer strange politicle class here in bloody germany.
Hi Alex
Love all your videos. Keep up the good work. The longer the better.
Your videos are informative and entertaining a rare combination these days.
Thanks: Bob
Gosh thanks Bob. You're embarrassing me. I'm just having fun but if you like it and maybe even learn a bit, I'm happy.
Thanks for watching. Alec
Alec, best video of the "Sea Hunt" series. Keep up with your excellent job. Thanks for your time and effort.
After watching this video it makes a lot more sense to me, why the underwater hand sign for "I'm down to 50 bar / my reserve" is sometimes refered to as "I opened my reserve" in some books. Very educational.
Thanks again for your awesome videos Alec.
In the early 2000's I was doing a ships diver course with the New Zealand Navy. Initially we started with J-valves and no BCD's. Part way through the course we were issued sets with contents gauge and BCD and told that it was a result of health and safety gone mad. However we weren't allowed use the BCD except in emergency as it was safety equipment! Fortunately that attitude has since changed.
Funny to hear the navy had a 'stone age' of diving too! Thanks for sharing Luke and glad you survived those crazy early years like me.
A.
Hey Alec, US Navy Diver here, we still call them K valves and J valves. Goes to show you what tribal knowledge will do when passed down through generations.
Since everyone uses the same terms, you're good. It's when it's mixed in with different (old/new) terms that confusion starts. I laugh at all the meme's about split vs rocket fins going on in the internet. I remember when fins that fit were a great idea.
A
Dear Alec: thanks for the series, it has been quite instructive as well as entertaining.
Thanks for watching. Alec
I started scuba diving years ago and on my early first textbook there's a picture that shows K and J valves, but without a proper explanation (and without have the opportunity to see one from real). Finally today i discovered the difference and the evolution throughout the ages ! Thanks for your videos Alec, I really enjoy watch them.
Thanks for watching Nicola. Alec
Wow! What a great video! Thanks Alec!!
Thnaks for watching Jeremy.
Alec
A regulator who "talks" to me? Well, at least one to "honks" to me! Yes, you guess! A SP MK7 "Honker" is in my collection ! Ultimately i was asked many times about "J" valves from firemen and rescue people. The reason? : they had to work in zero visibility waters. So they worked blind. Only solution: "J" valves! I really enjoy your videos, even if you speak so fast i must go back to understand in my lousy english. And in THIS video was the answer of the riddle about J&K ! Un gran abrazo, amigo!
Thanks for your comments Ernesto.
I do talk fast and can't seem to change that. Perhaps it will help with your English. Don't be afraid to ask if you miss something.
The Scubapro 'Honker" was pretty neat all right. Few divers know about it now and they'd likely laugh at it but at one time it was the reg to have.
Take care.
Alec
WOW... That is some great trivia! Thanks!
Glad you enjoyed it.
A
This is good, J valve questions are still on the PADI IE. Fortunately I knew about them already. This video will be good to help future candidates and divers that have never come across them.
Yeah. Despite their excellence and state of art materials, some things at PADI get left behind. If they still inquire about J valves on the IE, it may be an attempt to check on the candidates knowledge of history. It sure isn't about equipment knowledge! I was on the PADI Advisory Committee for a couple of years and have nothing but respect for them and their methods but some things are either too small or too obscure for the writers to attend to. I've always had a bit of a beef about the fact that one can become a PADI Instructor (or another agency quite frankly) but may have no night dive experience, no cold water experience, no dives deeper than 60' other than the one from the Advanced course, no scuba equipment knowledge, etc. However, the system works and gets better each year.
Thanks for watching. Alec
Alec, you made me smile with this one. This morning, just for fun, I cleaned off my old tanks in the garage that have been sitting there for probably 25 or so years. And believe it or not, one of them is the exact same yellow US Divers Professional aluminum 80 with the J-Valve and back-pack with cam lock you had on your video. I didn't even know about this video until three or four hours after I put the tanks back away.
The kicker is, the reason I decided to clean off the tanks in the first place was from watching your vintage BC episode. One of the BCs you discussed in that clip was a yellow USD horse-collar with the flexible hose manual blow-up inflator and CO2 cartridge - the exact same one I used all the way up until I stopped diving back in the early 90's. Same pocket in front, straps, everything. We used to smear petroleum jelly around the threads of the CO2 cartridge to help fight corrosion. That episode made me want to see how old my tanks were, and then I turn on this video shortly afterwards. Like I said, it made me smile.
Just so you know, I am giving it serious thought about getting back into the sport and am watching your videos to kind of bring myself up to speed on how things have changed in the past quarter century of diving. I really love your presentations and am looking forward to watching them all.
Now I'm smiling Rick!
To get an older diver back into the sport is always satisfying.
And there's no reason why not. I'm over 70 and still dive regularly. My diving profile has changed - less frequent, no cold water, no stupid deep dive contests, etc, but I'm loving it. And I'm sure you will too.
We were advised to remove the CO2 cartridge after every dive and to grease it also but few divers were that conscientious.
Most older horse collars have a frozen mechanism. The actual firing mechanism was made from cheap 'pot' metal and it corroded if it was in a humid room!! I used to remove them an plug the stub so divers could keep using their 'beloved' horse collar.
You'll probably find that your dear old yellow USD aluminum tank cannot be tested or filled. Read about 'SLC' on the internet or on the Luxfer tank site.
Take care and good luck.
Alec
Funny you should mention the age of the Aqua Lung tank. That's the first thing I was looking for when I cleaned it off. Turns out it was made in 1974! I had no idea I had bought it that long ago. I also have a Luxfer made in 1987 so it looks like I have a couple of aluminum paper weights now. The USD one would be a good display tank for a dive store though, just for sentimental reasons if nothing else.
I've never had someone apologize to me for making lengthy content and every part of me wants to watch this video that much more. Share your knowledge homie, we here for it.
You're the best!
I had a J Valve back in the 70s. Despite the concerns about reliability or accidental activation it never gave me any problems. There was also simple pressure gauge called a "stem gauge" which just pushed up a small rod much like the old air hose in a gas station.
Totally agree about J valves. For fun watch my Vintage Scuba The First Gauges, to see a stem valve.
A.
Heya Alec, I don't mind the longer videos. Being both a History teacher and scuba diver I am fascinated with these topics and seeing the evolution of the sport. I'm hoping you are going to do one on gauges and computers as I am interested in seeing the evolution of that bit of kit. Anyways, thanks again for the videos!
Yes I'll be doing gauges and computers. I have hundreds of old gauges from the 50s to the 80s and even computers dating to the 60s.
In fact I have a prototype mechanical computer from the 60's that is so neat you will freak when you see it and I explain it to you. They were so ingenious considering they really didn't have computers.
Thanks for watching. Alec
Fantastic
Great video of the big differences between the J and K valves.....Ralph Erickson, PADI's co founder told me they way each valve got its name is that, there were photos of each on a catalog page, and the J was the reference for the 'reserve valve' tank, and K the non reserve tank valve next to the photos........Ralph could be quite the BSer, but it made sense to me at the time....(then again, at my IDC he wore a high volume 'Lloyd Bridges mask and an old 'horse collar' BC.
Ralph was right, as you now know. He was a real diving pioneer and would certainly have known that K or J was simply the product number for that valve in the old USD catalogs.
All old divers were BSers - just look at me!
Thanks for watching.
Alec
I have a Painted Silver US Divers AL80 with a J Valve. My first cylinder from 1980. Still have my original working Conshelf XIV that is used as a decompression regulator.
Excellent!
Glad you liked it!
After recently watching your video on valves and "Night Moves" (1975) on TCM last night, Mr. Peirce, I noticed a '70s "J" valve on the Jennifer Warren character's scuba tank - not unlike yours seen here, but the "J" rod was absent. I thought that maybe a pressure gauge had supplanted the necessity for the "J" rod, but there doesn't look like there was any air gauge present. Only after viewing your vid here could I have observed this;thanks, Mr. Peirce!
Sharp eye sir. I love watching old scuba movies, and Sea Hunt, to see the gear goofs. Many movie back in the stone age used actors who were not divers so real divers did the under water scenes with face close ups of the real actors. I would also look for errors in old diving movies from gear setup (double hose regs on backwards), different fins under water and so on. Glad I could help you enjoy these movies.
Alec: the first valve on a 1961 steel 72cu’ tank was a sonic valve. I have never seen another one since. When you got below the 300 threshold the tank would rattle every time you took a breath. Worked well. No pressure gauge.
I did a Vintage video on those valves. Search for it and have a laugh remembering the annoying hammering.
A
Hi Alec, highly illuminating - thanks very much! Having only dived in the era of diving computers, I find it extraordinary that divers would dive with the j-valve enabled reserve air as their only way of knowing how much air is in their tanks...! This has got me thinking, and I suspect you may have the answer. (I apologise if you have covered this in another video that I have missed.) Some diving watches with external unidirectional bezels have the 0-15 or 20 minute marks coloured in red while the rest of the bezel is coloured blue or black. I believe Rolex was the first to do this and companies such as Seiko followed suit. If as you say up until 1962 there were no SPGs, I’d imagine depth gauges may have been scarce, too. Is the reason for the red on the bezel to tell divers when they were at that 5m-10m depth because the wavelength of light enables red to be seen at those shallow depths, and thereby indicate to divers when they ought commence their safety stops, which they could re-align their bezels to initiate to countdown? I’ve always found it strange that the first 15-20 minutes of a bezel were distinguished when in reality it’s the last 15-20 minutes that are most important in terms of air consumption (provided you know when that is!!). Anyway, thanks very much for your highly informative videos. Your love of all things scuba is very obvious and highly engaging.
Hi Roddy.
That's some interesting comments about the dive watch bezel. I'd not spent much time thinking about it.
The red color is certainly easy to see in shallow water. At depth, it looks black. I'm not sure if the watch companies were as astute as you suggest. I've seen watches with that last few minutes on the bezel painted black or even blue.
As to the placement of the color on the first 15 minutes rather than the last, you got me there. You are quite right that it's the last few minutes that ought to be highlighted.
As you know, the proper method to use a dive watch for timing your dive is to rotate the bezel until the '0' aligns with the minute hand just as you start your descent. That way, at any time you can glance at the watch and see how long you have been underwater. The minute hand rotates clockwise (I can't believe I just said that!!) so it will be in the red at the beginning of the dive. Not much reasoning to that in my mind!.
I noticed that you mixed your skills. That is, since we're talking about pre-dive computers, realize that a safety stop was not used until quite recently. Prior to the '80s or '90s, we simply surfaced. The idea of making a 3 minute stop at 15' (a good idea!) didn't come along until later.
Thanks for watching and for your comments.
Alec
Hi Alec, So it came down to where the valves were placed in catalog and what letter came next for valves. Good episode on vintage valves. 👍
Yep! Just that simple.
Life was so much easier to understand then, so practical.
Alec
I had a US Divers Al 80 (or 72) in 1975. It had the J valve and I forget if it was possible to reset the valve and still have the reserve if it accidentally got pulled down (assuming a full tank). Also were they filled with the valve up or down?
Tanks are filled with the valve up, if early in a dive the J is pulled down, it can be returned up as long as the pressure is above the J pressure limit of 300 or 400 psi. It's set so when the breathing starts getting hard, pull the J to get the remaining pressure. Back in the stone age you could tell a good diver if they regularly checked their J rod was up. Didn't have a pressure gauge so this showed you were 'monitoring your remaining air' so to speak. Thanks for asking.
GREAT MAN!
I'm going to ask my wife to read this. Her view is slightly different!
Awesome video for our youth
Hope young, old and new divers can learn from this old guy.
A
I have one of those u.s. Divers 80c tanks, made in 78 with a J valve, still in good condition and still in use
If your tanks passes hydro and has a GOOD visual examination with an Eddy Current test each year there's no reason why you shouldn't use it. Be aware that lots of dive stores will no longer test them or, even with good stickers, fill them. A store can refuse to fill any tank if it so chooses. In their defense note that problems with tanks e.g. explosions, usually occur during filling. Alec
Thanks for busting all the myths and “showing” the factual reasons for why they are are called that and why some people still say “turn the valve back 1/4 turn”
Welcome David. Glad you picked up some facts for the next dive club meeting.
I just bought a Scubapro r109 with a Seaway SPG :)
Hi Alec. Awesome video, I love both the technical and historical information. Just out of curiosity, how did you deal with a jammed pillar valve knob as you mentioned @5:40? Again, excellent stuff, keep it coming!
There were couple of things that you could do.
If the problem was caused by the cold, sometimes just warming the valve in the sun or hot water would do the trick.
Otherwise, you needed to get rid of the air pressure if possible by milking the 2 hose reg. If you can drop the pressure the valve knob will sometimes turn. If not, then careful but firm twisting of the knob with pliers, back and forth, just enough to force it a bit but not so much as to break it, will often break it free. This was always risky as they were quite brittle and broke easily.
Failing all of that, then you have no other option but to empty the tank through the regulator, remove the regulator and then try to loosen the valve knob. As the tank empties, the valve gets very cold and that often helps it to loosen. Warming back up to room temp will help as well. You can't really apply any heat other than maybe that from a hair dryer. Too much will damage the valve parts.
It was a nuisance all right.
Not a problem any more thank goodness.
Alec
Hi Alec, everytime I get my tank filled it's only at 2500psi should I insist on 3000psi or is this normal? Tank is a catalina aluminum 80cuft.
Yeah thats a common problem. thing is when they fill your tank the process should take about 30-40 mins. Thats because its a cascade fill system. First they fill it low pressure to about 2700psi. let it sit there and cool for about 5 mins. then bring it up to 3000psi, let it cool again, and repeat the process 2-3 times, while letting it COOL DOWN. WHen they are done at the store the tank is 3000psi at about 70F. When you go to dive the temerature is less so the tank pressure drops, should be around 2700psi though. Thats my two cents, even thogh im not an expert
@@Sokeresa Right I remember years ago it use to take 20 minutes for a fill, this guy just hooks it up turns on the air and a min or two later it's done, tank hot as hell to.
In one of your episodes you show a valve that has a port at 45 degrees between the threaded part an either the J-valve or the on-off wheel. I think it was made by Healthways or Dacor. This port was for a permanent mounted SPG with a braided hose. Not very popular for obvious reasons. (certified in 1966)
I show the Daemone 45 degree tank valve in Vintage Scuba S02E08 and S04E06.
i am confuse little about cylinder some says 80 cubic,some says12 litres .psi 3000 what r these.thanks
Hi Caentano, For information on cu/ft vs Litres, watch this video from Alec.
How Much Air? Cubic Feet or Liter's S06E18
ruclips.net/video/c2J6Xpv22v8/видео.html&frags=pl%2Cwn
Enjoy.
At around 6 min into this video, Alec says that opening 'modern' valves do not need the 1/4 turn backed off (as taught in even modern SCUBA training). I beg to differ! Back in the late '90s, as a DM and instructor on Guam with tourists, I had several instances where customers opened valve full & didn't back it off; therefore, when we went to swap tanks between dives the 'modern' K valves would jam open. Using pliers on the handle would often strip the metal fitting between rubber/plastic hand grip to metal on valve stem. Our best course of action was to remove the hand grip and use our adjustable wrench on the metal valve stem itself. As an engineer, I believed it was because the lesser pressure allowed a contraction of valve body against its components - specifically the HP seat/Plug Assembly against the Bonnet Gasket (a brass ring). I practice and insist students/customers 'back crack' the valve after full opening.
My point is the modern tank valve should be opened 'finger tight' without a turn back. First so the buddy knows its full open as there is no movement, second to not stress the valve internals. Any more force and the internals start to jam and if very cold water can cause a difficult closing like you shared.
Thanks for watching Marc.
Alec
@@AlecPeirceScuba_SeaHunter if a buddy doesn't know lefty lucy, I think they a liability.
Great video. It was apropos for me. I was watching JAWS tonight and saw Matt Hooper playing with a "J" valve. I made sure to point it out to everyone in the room. Alec, as it relates to tanks, do you think a diver should own his/her own air analyzer for checking mixes in rented tanks? Necessary, prudent, or simply a redundancy for divers in the U.S.?
O2 analyzers are not cheap as you probably know. You're looking at $300 to $500 for a decent one. Depending on how much EANx diving you do may help you decide. If your question is about the reliability of the dive store unit, I suggest that it's OK. It would be pretty stupid for any store to use less than the best and to not keep it in good shape. We use 2 different makes and models here and check each tank with both. Just my paranoid mind I guess.
Thanks for watching . Alec
super!
hi how long would it take to become a professional scuba diver,by the way love sea hunt watch it all the time,meny thaks john
A 'professional' diver could mean a scuba instructor or it could mean a commercial diver. Either way it involves a fair bit of time and lots of money. Speak to your local dive store about becoming an instructor. They'll explain the qualifications needed. A commercial course usually requires 6 to 12 months of training and LOTS of money! Alec
thank you so much youve been so helpfull meny thanks john
Does any J-valve have DIN connector? Or can I say that only K-valve has DIN and Yoke connector?
Good question. I've never thought about that but you're probably right.
The J valve was gone before DIN became popular.
I doubt there are any vintage J valves with a DIN fitting.
I discovered recently (which for me is in the past 10 years!) that there are modern J valves so maybe there is one made in DIN but I doubt it.
I would say that you're right - only K valves come in both DIN and Yoke.
This is one of those "Who cares?" points - so trivial that it really doesn't matter to anyone but I like that stuff.
As my dear wife Diana says, "Alec knows absolutely everything about nothing!"
Alec
Yes, there are. I've seen paintball players with those old tanks and valves. I've been diving one of these in the 1980s
J valves and backpacks (Board) systems are still used by some smaller Chinese fire departments for dive rescue. And believe it or not, I was born in 2001 and I not only got my hands on one of those systems before but also seen one in action. A manufacturer named Jiang Bo still makes those, not even the updated one, the older one used in the 60s. The circular shape mask and the circular shape surface supply mask used in the sea hunt series are also widely available there and we call them "693 full face masks". Just don't think that I'm speaking bad for China. Most of the ppl there including FDs use state-of-the-art gears and are well trained. It's just interesting to see that vintage gears are still available there.
That is interesting Alan. Only folks I know who regularly use J valves are my vintage scuba buddies. Can't see why a fire department would trust it instead of a standard pressure gauge. Appreciate the information.
@@AlecPeirceScuba_SeaHunter FDs there who have this piece of equipment rarely do dive rescues if at all because they may not have any waterfront in their jurisdiction and they keep a vintage set as a backup. A complete backboard system there only cost 60$ there believe it or not so it made it reasonable to purchase backboard system instead of a modern system as a backup.
I own an old tank equipped with a "j" valve, but from a completely different configuration, the reserve is operated via a push-pull cable and there is absolutely no lever or rod or any exterior moving part.
this tank and valve were sold by VOITH.
as all my regulators have a SPG, I gutted this mechanism and plugged the valve with standard regulator plugs
That VOIT valve you refer to was featured in one of my Vintage Scuba videos a while ago.
It's too bad that you changed it. They can sell for as much as $200 in original condition.
It was made in the mid to late 1960s.
Alec
@@AlecPeirceScuba_SeaHunter there is a story behind this tank, i found it underwater, I believe that it was there for at least 15 years, the tank was half full of water, I've took a chance to send it to the hydrotest and it PASSED so I use it as a back up tank. the cable was damaged so it was not practical to make this mechanism functional so I removed it
That was exactly the problem with that J mechanism. The cable froze up from corrosion. Imagine your bike brake cables being immersed in salt water all the time. And there was no easy way to rinse them.
Great about the tank. Being underwater would have no effect on the hydro test which is a test of the metal elasticity. It usually ruins the inside walls though and the tank fails visual.
Alec
I used J valves on all my tanks, back in the 60s. Never had a failure on my personal tanks. only failure I had was in a rental tank, while diving off of Redondo Beach pier, in 90 ft of water. On the way back from gathering crabs, my air suddenly shut off. My buddy was just ahead of me, and I grabbed his fin, and singnaled no air. We buddy breathed to the surface, on his regulator. Found out later, that the inside of the valve was corroded, dropped below reserve pressure, and suddenly activated, cutting off my air. Strangely I didn't notice an increased effort to breath, when the tank dropped to reserve pressure, as is usually the case. Do they teach buddy breathing anymore, in basic scuba, as an alternative to a safe second.
You made it through a stressful incident safely so well done. As for buddy breathing, suggest watching Vintage Scuba S08E03 Skills You Should NOT Learn, which includes buddy breathing. Lots in Vintage Scuba for an old stone age diver like you to laugh at.
i was in the 90’s. didn’t practice it, just in the text
My tank still has a J-Valve and we have almost 40-year-old regulators in great condition.
I service lots of 40 year-old gear - regs, valves, tanks, etc.
They work just fine.
But they are 40 years old.
I have several 1971 Norton Commando bikes from my racing days. They look and run perfectly. Perhaps better than they did in '71. But I do not ride them on the freeway. Carbs, drum brakes, cables, old wiring, lights, etc, simply don't measure up. And that's not touching on increased response, power and speed of a modern bike (like my 2015 Indian Vintage) which these days is essential on highways.
I'm always happy to hear about vintage scuba gear still in use but do hope the divers are aware of the changes made over 40 years.
What regulators are you using?
Thanks for your comment.
Alec
Alec Peirce Scuba j
You clearly had a good instructor.
Alec
the presentation of the diving equipment has changed... but the basics remains exactly the same
I love my j valve
you should have menshend din valves because they are very popular as well and where i go diving you only have din valves and 12l steal botels
i go diving with a double 12l and and dir equipment configuration
DIN valves and steel tanks are not so popular in North America.
They certainly have their place but the cost is much higher and divers are not so concerned about the extra air nor the different buoyancy aspects of the steel tanks.
Also DIN valves have been around for a while in scuba but they're not really a Vintage Scuba topic. I'll save that for my Tech Tips which deals with modern scuba gear.
Thanks for watching. Alec
Short videos.... Good luck! :)
Hi Eric. I'm trying. I really am.
The problem is that when I get talking I get excited and ......
Alec
Medical O2 tanks use the pillar valve. So if you have ever seen a dive O2 kit you have seen a pillar value
Not the big steel tanks but the small aluminum ones
Did not know that. Thanks Zachary.
A
We had octopuses, but we ate them :)) 10:30
They were tasty.
A
i agree a lot, buit the reserve valve only was a Problem , becouse nowbody did a Service on it , kelp wrecks ??? di9d it , really now you are on a faboulous Story or not ?i apreciate you but there are some really Young dudes out theher zhat where all the way from thebeginnig too ;?*
You are partially right about the maintenance of the J valve. Divers tend to ignore their valves even today. We inspect our tanks every year and may service our regs every year but not the valve. The valve is subject to more stress than either. If the J had been serviced every year it might not have been so unreliable.
Thanks for watching.
Alec
Today we have got "Yoke" DIN valves question)
OK.
Alec
5-10 min 21 min later lol
Sorry. Get me talking about scuba and it's hard to stop.
I hope there was something in there of value to you.
Alec
Alec Peirce Scuba no complaints, love your videos, 30-40-50 minutes I don’t care. Finishing my open water certification tomorrow morning my instructor says I learn fast and wants to get me on track for master diver, on my 2nd to last dive a girl was in the pool with me and was doing a refresher and it made me nervous watching her fumble around then drop to the bottom like a rock missing equalizations
@@AlecPeirceScuba_SeaHunter your content is interesting, length is fine
Hi Alec,
I also forgot about the Sherwood "Y" valve. I have a picture of it for you on my Facebook site. Here is the link.
facebook.com/photo.php?fbid=10154785325923724&set=pb.762908723.-2207520000.1480860494.&type=3&theater
Wow! I remember that! I never had one but it was an early attempt to provide the safety of a second regulator. It's also an odd combination of valves from different eras. The thread is 1/2" from the 50's; the knob is a pillar style but with a modern plastic knob; it was made in the mid-late 60's when 3/4" valves were already replacing the 1/2". Maybe Healthways had a bunch of old parts laying around.
Thanks Russell
no need to make the videos shorts. Please share your experience
Lots of vintage videos to enjoy and laugh at.
A
It is so cool you said "it happened more than once" regarding J-rod benign pulled down accidentally. Definitely not to you, otherwise you couldn't tell us that story !
It happened to buddies and other friends who suddenly wanted to share air!
A.
Lol K valve= kill valve.. lol my instructor in 1986 still was teaching turn the air on then back off the valve 1/4 turn.. lol always done it since. Lol
The turn back is no longer a practical need and is no longer taught to divers.
A
@@AlecPeirceScuba_SeaHunter hehehe but I never had a stuck valve since i started doing it....... hahahahaha
My biggest thing is pointing the pressure gauge away from everyone when I open the valve. Trying to hold both the gauge face and the blow out pointed away from everyone. I did have the glass blow out once but not the pressure relief thingy on the back of the gauge. It was a dacor, and I am pretty sure it was 3300 psi that did it.. in a new tank.
10:32 we had octopuses but we ate them
was looking for some equipment from the 40s 50s, 60s online etc to see how equipment has evolved, but didnt find much. yesterday stumbled upon your channel and saw you had a whole friggin series. its like finding a gold mine. in europe we didn't have sea hunt, but we had the cousteau movies and i remember watching them as a kid on sunday with the whole family.
Once we learn and educate us no need to be apologizing for us
Thanks for watching. Alec
This guy can talk about nothing for 10 minutes, on and on and on. Sorry I am gone!
Phew!
Glad that's over.
Thanks for watching.
Alec