Air tank valve stop??

[Revoman]

Hello AGN'ers!

I have a Tiger Shark from Brancato, it has a small leak, I assume through the brass, threaded valve stop with the Teflon (?) insert.
Brancato will NOT sell just that piece, they only sell the entire 'top end parts' as a single sale item at $90 + Shipping/Handling.
I tried the local dive shop and it seems that there valve stops are CLOSE, but will not thread into the female stem part. I believe that the valve assembly is made overseas, likely in Europe (?), so probably a metric thread, thus the dive shops here don't have them.
So the question is;
Does anyone know where to purchase just the brass threaded stop?
Looks like this....



mike

 

[Scotty1]

Sorry to hear that Joe won’t sell just the part needed. Would it be possible to grind or sand the sealing side down, just enough to get rid of the impression in the sealing surface? My inner McGuyver brain thinks it may be possible …

 

[Revoman]

Scotty1 (aka MacGyver)​

Thanks for the idea, I will take a deeper dive, look at that possibility. The indents are very noticeable though.

mike

 

[Gerry52]

Mike call Fire Etc., downtown S.D. They very well might have that part. Better yet, go there if you can with your tank & part. Their inventory of that kind of stuff is unreal! 2190 Main St. 619 525 7286.

 

[Revoman]

Gerry!

Thanks for the input. I'll try to buzz down there and take a look-see.

Also, Scotty1, this is what the Teflon seat looks like closeup. I don't think that sanding out that deepish groove is gonna be doable, but thanks for the idea anyway!



mike

 

[bigHUN]

Any friends with machine shop? The setup is longer then the machining time.

 

[Revoman]

bigHUN....

How would the machinist replace the seat, as I believe that it's poured into the pocket?

mike

 

[Scotty1]

I figured it was a machined plug, just pressed in, but might be wrong. I can’t tell if it’s a straight plug, or has a flange towards the outside edge. If it’s a straight plug, maybe it can be flipped over to use the other side.

 

[AlanMcD]

Here is another hair-brained idea - what if you heated up the plastic insert part with a heat gun? Might it flow back to flat, or seal better when reinstalled?

If it is already dead, it might be something to try . . .

If it sounds stupid, no worries . . .

 

[Revoman]

Scotty1​

From what I have learned so far (what I've been told anyway), it's not pressed-in, it's molded into place as there is a retaining lip holding it in place. It would not be retrievable without damaging either the Teflon or the brass lip.
Flipping over would definitely be the hot trick to so though!

​

AlanMcD​

Doesn't sound hair-brained to me Alan. Once I find a replacement, so as to not deface this one too bad while using it for comparison reasons, I will give that a try for the next time one is needed.
Thanks for the idea!
mike

 

[BlackICE]

Looks like you can use an regular M10 bolt and nylon washer.

 

[Aimright]

Hello AGN'ers!

I have a Tiger Shark from Brancato, it has a small leak, I assume through the brass, threaded valve stop with the Teflon (?) insert.
Brancato will NOT sell just that piece, they only sell the entire 'top end parts' as a single sale item at $90 + Shipping/Handling.
I tried the local dive shop and it seems that there valve stops are CLOSE, but will not thread into the female stem part. I believe that the valve assembly is made overseas, likely in Europe (?), so probably a metric thread, thus the dive shops here don't have them.
So the question is;
Does anyone know where to purchase just the brass threaded stop?
Looks like this....
View attachment 552393View attachment 552392View attachment 552391View attachment 552390View attachment 552389


mike

Don’t know if the stop in this kit is the same size as yours. I purchased this to repair my Drager scba valve several years ago, worked great.
https://www.augustindustries.com/product/repair-kit-for-standard-line-valves/

I might have saved my old stop from my rebuild, I will rummage around tomorrow and will post up dimensions if I find it.