@Scuba_Nick27 , there is something that is not obvious on manifolded twins: if you look at the simplified schema below
If you close the left or right post, you can still access all of your gas if you leave the isolation opened.
I didn’t know this until someone explained it to me.
So if you can stop a leak by closing the correct post, you can access all the remaining gas by reopening the isolation valve. At this point the SPG would still show the total pressure because opening the isolation would equalise the tanks (the SPG is usually on the left post, the right post is the one the most likely post to fail because you breathe from it).
For example if you have a free flow on the right post, you could do this:
PS: I have never experienced a catastrophic equipment failure myself (touching wood) so only repeating what I have been told ...
If you close the left or right post, you can still access all of your gas if you leave the isolation opened.
I didn’t know this until someone explained it to me.
So if you can stop a leak by closing the correct post, you can access all the remaining gas by reopening the isolation valve. At this point the SPG would still show the total pressure because opening the isolation would equalise the tanks (the SPG is usually on the left post, the right post is the one the most likely post to fail because you breathe from it).
For example if you have a free flow on the right post, you could do this:
- Close isolation
- Try to close right post and switch regs
- Notice that you are not leaking anymore
- Reopen isolation manifold and stay on secondary reg
PS: I have never experienced a catastrophic equipment failure myself (touching wood) so only repeating what I have been told ...