New J-valves?

[Paladin]

Just wondering: Does anyone, anywhere in the world still make J-valves?

[semo]

When you find some, buy them all and then melt them down so they can be recycled into something worth having.:D:D

If you really want some i will sell you a couple of them. Im pretty sure i have at least two brand new ones.

[DaleC]

I quite like my J valve actually. Semo, feel free to send me all your vintage equipment and I'll make sure to dispose of it safely for you. I wouldn't want to worry about anyone hurting themselves with it.

[ZKY]

When you find some, buy them all and then melt them down so they can be recycled into something worth having.:D:D

If you really want some i will sell you a couple of them. Im pretty sure i have at least two brand new ones.

And you posted your remark in the vintage forum why? :confused:
We happen to cherish and love this stuff.

[Paladin]

When you find some, buy them all and then melt them down so they can be recycled into something worth having.:D:D

If you really want some i will sell you a couple of them. Im pretty sure i have at least two brand new ones.

So, how much ya want for a couple new J valves? I got two tanks here I could use them on.

[captain]

As far as I know they are still available from Aqua Lung in both single and double. The overhaul manual is on line on the Aqua Lung web site and was up dated in March 2009. But they ain't cheap.

http://www.aqualung.com/militaryandprofessional//PDF_Data_Sheets/Technical_Manuals/780211_j-k-twin_TechManual.pdf

[JS1scuba]

San-O-Sub Italy still makes the reserve valve.

Sanosub Diving Catalogue :: Specialty Valves (http://www.sanosub.com/subacqua/valves_specialty.htm#10021)

You will need to specify with them what neck thread you want. Also if you plan to use them in the USA you need to specify that the valve have a safety assembly (burst disc). IF they have them on the shelf you can probably buy a dozen or so. If they DONT have them on the shelf you may need to order 100.

Good Luck

JDS

[Paladin]

As far as I know they are still available from Aqua Lung in both single and double. The overhaul manual is on line on the Aqua Lung web site and was up dated in March 2009. But they ain't cheap.

http://www.aqualung.com/militaryandprofessional//PDF_Data_Sheets/Technical_Manuals/780211_j-k-twin_TechManual.pdf

How would one go about buying a couple? I recently bought 3 of the J valve manifolds new from a Scuba Board member and am using one on my twin 72s. I would like to get a couple of new single J valves.

[captain]

How would one go about buying a couple? I recently bought 3 of the J valve manifolds new from a Scuba Board member and am using one on my twin 72s. I would like to get a couple of new single J valves.

You may want to rethink the new valve thing. Last price I saw on the double manifold was near $800 and the single is at least half that. Mostly used by the military and low production = high price.

There are tons of used ones on ebay cheap, get the ones with the black plastic hand wheels. All you gain new is pretty shiny unscratched chrome.

[elmer fudd]

Why the black plastic hand wheels? I've got a couple of spare J-valves, but I've always preferred metal. It just looks more vintage.

[Scared Silly]

If they can be rebuilt I would be tempted to strip them down to bare brass and have them chromed again. Probably pretty easy these days.

[captain]

Why the black plastic hand wheels? I've got a couple of spare J-valves, but I've always preferred metal. It just looks more vintage.

They have the best J valve mechanism with better seat material than the earlier valves.

The metal and plastic hand wheels are interchangeable.

[superstar]

Trident sells parts for the J valves.

[Paladin]

You may want to rethink the new valve thing. Last price I saw on the double manifold was near $800 and the single is at least half that. Mostly used by the military and low production = high price.

There are tons of used ones on ebay cheap, get the ones with the black plastic hand wheels. All you gain new is pretty shiny unscratched chrome.

$800? I only paid $100 apiece for my 3 NOS USD manifolds that I bought here on SB! I knew I was getting a bargain, but I had no idea how good a bargain it was! I shoulda bought more!:D

[duckbill]

Paladin, the $800 is not a realistic retail price. I'm sure USD just charges the Feds that because the Feds just pass the bill on down for the sheep to pay each April 15th, along with everything else we get shafted on.

[captain]

$800? I only paid $100 apiece for my 3 NOS USD manifolds that I bought here on SB! I knew I was getting a bargain, but I had no idea how good a bargain it was! I shoulda bought more!:D

The problem is very few divers other than the vintage divers want single outlet double manifolds that is why you see them on ebay cheap. I just bought two used one for $15 each.

[Paladin]

But mine are NEW!:D

[knowone]

Now this is a KNOB.

And it's pretty groovy when you get one with an 88 underneath it for twenty bucks.

http://www.scubaboard.com/gallery/data/533/medium/P10102151.JPG

Straight out of the vibrating machine all original parts except three O rings, I think.

Comes with optional psi device port. Very common valve.

Please excuse photo flurry, I am doing SB Photo Posting Specialty.
Thank you.

[elmer fudd]

That's a Dacor valve you've got there. I've got a pair just like it, except mine are K-valves. I even remember seeing a doubles manifold somewhere with those knobs.

[knowone]

Like HIM?


http://www.scubaboard.com/gallery/data/533/medium/P10102252.JPG

Crap photo, getting dark, rushing, flustered. Good no diving tonight.
Interestingly the green reflection is from the faded green banana hammock I'm wearing.
Yuk.

[Paladin]

Now this is a KNOB.

And it's pretty groovy when you get one with an 88 underneath it for twenty bucks.

http://www.scubaboard.com/gallery/data/533/medium/P10102151.JPG

Straight out of the vibrating machine all original parts except three O rings, I think.

Comes with optional psi device port. Very common valve.

Please excuse photo flurry, I am doing SB Photo Posting Specialty.
Thank you.

I got one of those in a drawer somewhere.

[knowone]

Cool. Yeah me too.

[elmer fudd]

The big difference I see with yours are the attached pressure gauges. How does that work out for you? Myself, I'm not crazy about the idea of keeping even an HP hose charged to 2500 psi for weeks at a time.

I suppose you easily build a set of doubles/triples/quads with them though. Just string HP hoses between the ports.

[captain]

The big difference I see with yours are the attached pressure gauges. How does that work out for you? Myself, I'm not crazy about the idea of keeping even an HP hose charged to 2500 psi for weeks at a time.

I suppose you easily build a set of doubles/triples/quads with them though. Just string HP hoses between the ports.

The SPG is charged only when the valve is open, you can install or remove it with the tank full. You could probably breathe down one tank before the other could equalize because of the extremely small orifice in the HP ports and hoses.

[elmer fudd]

The SPG is charged only when the valve is open, you can install or remove it with the tank full.

I was wondering about that. I kind of assumed based on the geometry of it that the valve was downstream of the SPG. Thinking about it though, it's obvious that you're right.


You could probably breathe down one tank before the other could equalize because of the extremely small orifice in the HP ports and hoses.

Nothing that couldn't be fixed with a drill.

[Luis H]

The SPG is charged only when the valve is open, you can install or remove it with the tank full.



Not in the double manifold.

There was also at least one single tank valve (maybe more) with a port that was upstream to the valve. I can't remember the manufacturer, but when I tore the valve apart the air passage was obvious.

[knowone]

Yep. Nemrod and the sinlgle Dacor, very nice option to have.

I make up my mind between diving double hose, tank spg or single with reg spg
and gauge or plug accordingly, fill then hopefully go.

Sometimes I tell the filling people that the plug O ring or the spg O rings or hose, is the burst decapacitator for that tank. That side has no disc.

But they usually don't get past wondering about the J down and looking at the chrome.

I try not to leave it hose charged forever, but when they go, they don't go much
catastrophically and I have enough hoses and spgs to swap out for half an eternity.

I forget and leave my workshop blowing testing tanks and regs charged sometimes for days?

Very good for older hose testing.

[duckbill]

I have a Healthways set of doubles that I had put a gauge on (my avatar). Like Luis said, that gauge was always under pressure. After a couple years, the gauge developed an opaque, frosty appearance inside the lense and made it useless. I have no idea what could have caused that.

[oldmossback]

Pull the lens and using gel toothpaste, give it a good polishing.............i did this for one of mine and it worked very well.

[phantomrfa]

late again put here is a link in the uk .(25mm thread) maybe they can do others i dont know
Twin Manifold With Reserve Single Outlet (http://www.subaqua-products.co.uk/cms/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=294&category_id=17&option=com_virtuemart&Itemid=54)

[Paladin]

late again put here is a link in the uk .(25mm thread) maybe they can do others i dont know
Twin Manifold With Reserve Single Outlet (http://www.subaqua-products.co.uk/cms/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=294&category_id=17&option=com_virtuemart&Itemid=54)

I checked their website and they sell single J valves, too.

[captain]

But everything appears to be metric, no 3/4"STP.

[oldmossback]

I checked their website and they sell single J valves, too.

Yeah, I did too, but I wonder where or who manufactures these?