Y or TAG valve
- Thread starter h90
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
GillScales
Contributor
I've only seen the old sherwoods on ebay from time to time
Sherwood Dual Twin Outlet Y Valve 3/4" Double Regulator - eBay (item 360295026844 end time Sep-05-10 02:32:19 PDT)
Sherwood Dual Twin Outlet Y Valve 3/4" Double Regulator - eBay (item 360295026844 end time Sep-05-10 02:32:19 PDT)
DepthCharge
Contributor
300bar is unnecessary on any (Imperial) 3/4" valved tank
why?
It is anyway obsolete as the "300 bar" tank turned out to be 232 bar tank and they just interpreted "High pressure" with 300 bar without calculating PSI->bar.
So I am back to step 1 importing one from Europe. The European comes metric and I get the double valve easily.
So actually the complete topic is not necessary anymore.
15 l 300 bar tanks seem to be very rare.
300bar = 4350psi
For all practical purposes such a tank does not exist in the USA. And if one did you'd never get it filled completely here anyway.
"HP" tanks in the USA with 3/4" valves are going to be 3442psi service pressure and 200 bar valves are plenty adequate. 200 vs 300 bar valves are really just slang terms anyway and have nothing to do with the pressure the regulator fitting will hold.
Do not import a M25 valve from Europe it will not fit North American tanks properly, it will go into a North American 3/4" hole but kill someone on the first fill because it won't hold properly.
Belmont
Contributor
Beuchat made Y valves with 3/4 NPSM threads, I don't think they still do anymore. There was not enough demand for them.
They are a much better design than H valves
I have one and use it when I dive single tank. It saves me from modifying my twin setup.
They are a much better design than H valves
I have one and use it when I dive single tank. It saves me from modifying my twin setup.
Well to tell the complete story: I am in Thailand and wanted to import 15 l 300 bar cylinder from Germany. But thought I check around in Thailand first. I got two offer for 300 bar Worthington cylinder. So I needed the 3/4" 300 bar valve.
But after checking with Worthington and than with the supplier the 300 bar cylinder were 3442 psi.
So now I ordered already 2 cylinder from Austria including TAG valve 300 bar from Aqualung. Same as in USA here you'll hardly find someone who fill 300 bar. But I also bought a 300 bar MCH-6 which should do the job.
thanks for all the help.
Similar threads
