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Post by antique diver on Nov 8, 2021 10:59:43 GMT -8
Would like to purchase or make trades for J or K Sportsways valves. The type needed have straight threads that measure 3/4" OD, and seal to cylinder with o-ring. Also would consider a doubles manifold of same type.
I have various new and used manifolds for sale, or trade toward above valves.
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Post by cnotthoff on Nov 10, 2021 10:10:31 GMT -8
Just a little clarification for me please. A standard modern scuba tank rated for less than 3500 psi will have a valve with 3/4" - 14 NPT . If you measure that valve with your calipers, it comes out to just over 1" .
Sportsways did market a scuba tank with a smaller neck opening and a corresponding smaller valve. As usual, either way, I think I got what you need. Shoot me a message and we'll work it out.
Good Dives,
Charlie
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Post by cnotthoff on Nov 11, 2021 11:30:07 GMT -8
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Post by antique diver on Nov 11, 2021 21:12:39 GMT -8
Just a little clarification for me please. A standard modern scuba tank rated for less than 3500 psi will have a valve with 3/4" - 14 NPT . If you measure that valve with your calipers, it comes out to just over 1" . Sportsways did market a scuba tank with a smaller neck opening and a corresponding smaller valve. As usual, either way, I think I got what you need. Shoot me a message and we'll work it out. Good Dives, Charlie Charlie, thanks for your response to my quest for a valve, and yes that photo is the one I am looking for. Pipe thread sizing causes a fair amount of confusion due to it being a reference to the nominal inside diameter of pipe (and it's not always really accurate about that), instead of the outside diameter. So as you noticed, the 3/4 straight pipe thread used on most modern Scuba cylinders is noticeably larger than the size designation. The NPT designation refers to a tapered thread, and straight pipe threads like the valve you mention is designated NPS. To add to the confusion, the older Sportsways valve that is much smaller, and sealed by oring is technically not a pipe thread, but a 3/4" SAE straight thread... designating the actual size. Crazy, huh? I'll send a message and see if we can work something out. Bill |
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Post by antique diver on Nov 13, 2021 7:47:11 GMT -8
Charlie, haven't heard back from you and not sure you got my message about the valve. The one you show is what I'm looking for. ??
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Post by nikeajax on Nov 13, 2021 11:36:58 GMT -8
Bill, I know Charlie gets busy sometimes, so be patient: he's sometimes asked to do some crazy stuff... "OK, so we're raising the boat from how deep of water?"  JB |
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dead_dog
Senior Diver
It's what we learn after we know it all that counts. John Wooden
Posts: 79 
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Post by dead_dog on Nov 15, 2021 12:54:30 GMT -8
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dead_dog
Senior Diver
It's what we learn after we know it all that counts. John Wooden
Posts: 79
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Post by dead_dog on Nov 15, 2021 13:10:03 GMT -8
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Post by SeaRat on Nov 15, 2021 14:58:16 GMT -8
White Stag was headquartered in Portland, Oregon.  . I know as my aunt Billie Conklin worked there, and I got my first custom wetsuit from White Stage at her discount. John |
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Post by cnotthoff on Nov 15, 2021 18:20:06 GMT -8
Bill, I know Charlie gets busy sometimes, so be patient: he's sometimes asked to do some crazy stuff... "OK, so we're raising the boat from how deep of water?" JB Nice of you to think that I must be working. We've had a flat ocean at the beginning of crab season, so I've been staisfying my saline addiction.  20211112_125121 by Charlie will, on Flickr Good Dives, Charlie |
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Post by nikeajax on Nov 16, 2021 9:25:01 GMT -8
A while back someone PM'ed me asking where Charlie was... It was as if, because I lived in California, I would know  The funny thing is California is probably three times the size of his  This was long before I ever met him in person too  JB |
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Post by antique diver on Nov 28, 2021 17:26:21 GMT -8
I hope we can clear up the still continuing confusion over the Sportsways valve thread size and designation. It's been going on for 50 years that I know of, when I first ran into the tanks and valves in question. I'll start a new "thread" about threads soon. I probably should brush up on my facts to be sure I don't goof this up. |
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. I know as my aunt Billie Conklin worked there, and I got my first custom wetsuit from White Stage at her discount.
The funny thing is California is probably three times the size of his 
This was long before I ever met him in person too 
