A thought on extending the life of 1/2" NPT tanks?

[crimediver]

My 48 year old memory must be failing me, was thinking people were having trouble getting 1/2 NPT tanks filled at their LDS.
I appear to have an ingenous solution to a nonexistant proablem, my bad.

I have not had a problem getting mine filled but many of those old valves had the lead plug safety on them, which aren't legal. I just replace mine with a burst disc safety and am OK.

[capn_tucker]

Thanks for the info on White Stag. I have often wondered what ever happened to them. When I first learned to dive the LDS carried White Stag DEEP gear, but I never used any of it.
Nowadays I'm using a White Stag DEEP facemask quite a bit, and it seals better than any others I've ever used. Too bad they never had a double hose though..

[pescador775]

Older, steel, 38 cf SCBA tanks and some aluminum oxygen tanks have the 1/2 inch NPS, O ring. I suppose the SCBA tanks, which can be had for 10 bucks, would make a nice set of doubles. Not galvanized, though.

[21]

The 38s with the straight pipe thread were products of Sportsways.

valves and parts are very difficult to find.

Avoid!!!

21

[William]

I have 4 complete sets of these older Totally Round Bottom Twin Steel Tanks, ( I beleive these were the Oxygen tanks ) and they have the White Stag 1/2 inch Straight Twin Tank Valve Assemblies with O-Ring Seals on them all. I already had 2 sets tumble cleaned and Hydro Tested and the Visual inspections were done, all witout a problem. With the very round bottoms, they have the very Old look to them, but the valves do stick Up very High above the tanks. I have purchased many of the twin tank White Stag Valve Assemblies that are New Old Stock and I was only charged like $50 for each set. They even gave me several used ones for free that are in excellent condition, so I do beleive the ones on eBay are Very overpriced. Those are in poor condition too.

[Danny D]

I have a White Stag NOS double 21/2'' manifold that I purchased some time ago assuming it was a tapered thread. When I get home this weekend I will post some pictures. I purchased it because it also has a high pressure port.

Dan

[William]

I traded my White Stag Catalog to help get the Nemrod Dreadnaught Speargun trade finally ok-ed, but I did make a nice copy before I mailed her off. It is very surpriseing how attractive White Stag made all their products. They have kind of a Mach-O look to me. It is a shame they did not make a Double Hose. Even a Re-Label would have been nice. In fact, I think I might re-label one double hose to a White Stag any-way. Except for you men, who will ever know, or even care as long as the "White Stag"double hose looks very good,ha,ha.