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My fire department has several Scott 2216 aluminum cylinders that they want to give to the dive team. I called my local dive shop and they advise that these bottles have a different threading to them. They advised that a standard K-valve would not fit the threading.
Anyone know a manufacturer that might make a K-Valve to fit it? All of the cylinders are in great shape and were last hydro'd in 2003.
My fire department has several Scott 2216 aluminum cylinders that they want to give to the dive team. I called my local dive shop and they advise that these bottles have a different threading to them. They advised that a standard K-valve would not fit the threading.
Anyone know a manufacturer that might make a K-Valve to fit it? All of the cylinders are in great shape and were last hydro'd in 2003.
Any help?
Chris
Low pressure SCBA probably use CGA 346 fitting. You can probably find an adapter. I would ask your LDS if they are Global Manufacturing dealer and order it from them. Global does not sell to the public.
Having said that if your tank is fibre wrapped it should not be used for scuba as salt water can cause corrosion under the wrap. Also the tank will be ridiculously bouyant. Also since it only holds about 35 cuft I ask, why bother?
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Cheers,
Dave...
www.rebreatherworld.com
"The stone-age just called, they want their doubles back." wreckseeker (2007)
Actually I think I have a Scott aluminum 2216 tank that has a K-valve 1/2" straight thread scuba valve in it. The valve may be an early Sportsways (I think). No manufacturer that I am aware of currently makes this but some vintage 1/2" k valves can be scored off the internet. There are a still a few 1/2" straight thread floating around. Do not confuse this with a 1/2" tapered pipe thread post valve.
The tank is not suited for scuba as it has lousy bouyancy characteristics but I use it for filling lift bags. I have also seen adapters that allow you to screw on a scuba adapter fitting. More trouble than it is worth but it can be done.
Yea 2216 psi/ 35 cubic feet.. Not worth it... But don't pass them up, they work perfect for underwater air deployments.. All you need is a piece of hose to screw into the existing valve, an air chuck for valve stems, And a couple of Truck tubes you know the big ones... And you got yourself a recovery rig.. Were being extremely buoyant is a plus, air the tubes up and let go next stop the surface
The biggest problem is meeting CGA standards by using an adaptor. We has a local shop owner that drill and taps SCBA tanks and puts a K-valve in but that is against fed regs. It violates DOT regs. It is generally best to use only tanks certified for SCUBA for that purpose.
Inspiro has the only fiberwrapped tanks that are certified for scuba use by the DOT. But in the end changing the purpose for a tank that is not certified for that purpose (SCBA to SCUBA) is a violation of DOT regs.
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