Manifold fixed or loose

[Rob Dobson]

Originally Posted by Colin Marriott

erm . . . can somebody conform that a manifold, with 200bar pushing against it, can actually be moved?

My regs don't seem to want to move much

ColinM

If you're not sure then loosen your manifold. Fill your tins with gas. Roll you set off of a wall or out of the back of your car. See if it's moved.

Or come scooter diving with me around a big ass wreck

[nickb]

Originally Posted by Rob Dobson

OK - I have mine loose because if I hit anything I tend to really whack it. I want the manifold to move and not break. I want the give in the manifold to absorb the energy of the impact rather than bending it.

I have rolled a fully loaded set of 12's off of the back of a 4X4 and the manifold moved but did not break. If it was fixed in place I suspect that the manifold would not have survived.

I don't have mine bollocked-up so tight it won't move if it's whacked heavily, just a little nip with a spanner. I don't like the idea of it being loose enough that the valve could end up pointing away from me where I can't reach it. That's worse than having no isolator valve at all.

[Colin Marriott]

Originally Posted by Rob Dobson

If you're not sure then loosen your manifold. Fill your tins with gas. Roll you set off of a wall or out of the back of your car. See if it's moved.

Or come scooter diving with me around a big ass wreck

Nah, figured it out, the regs have 200 odd bar pushing on one side, locking the threads up, of course the manifold has 200 odd bar on both sides, so there's no net effect.




ColinM

[Rob Dobson]

Originally Posted by warmwaterdiver

what you want is a valveguard Rob

Yeah you're soooo right. I must get me one of those. And a big ass dual bladder bungeed wing. Some Poseidon Regs. A lift bar. Did I mention more slob knobs than than you can shake a stick at? Oh and a yellow box.

In short Gary you are in fact my all time diving hero. I have posters of you on my wall I do....

[Rob Dobson]

Originally Posted by nickb

I don't have mine bollocked-up so tight it won't move if it's whacked heavily, just a little nip with a spanner.

Ah OK - same as mine then! I wondered what you were on about when you said you wanted to be where you left it!

[wilbo]

Originally Posted by Rob Dobson

I have rolled a fully loaded set of 12's off of the back of a 4X4 and the manifold moved but did not break. If it was fixed in place I suspect that the manifold would not have survived.

nor my legs..

TBH - under pressure - even if they are 'loose' they are not really that loose and need a reasonable amount of effort to shift them.. and I'm talking about barrel manifolds rather than MDE.

[nickb]

Originally Posted by wilbo

nor my legs..

TBH - under pressure - even if they are 'loose' they are not really that loose and need a reasonable amount of effort to shift them.. and I'm talking about barrel manifolds rather than MDE.

The MDE manifolds are much harder to turn than the barrel 'O' ring types due to the facing 'O' ring.

With an Agir/Halcyon/Scubapro type manifold, if the twinsets been set-up correctly with nice parallel bands, it will turn very easily about ¼ to ½ a turn either way.

In fact, it turns easier than the valves*

* That's just a joke for Mal, BTW.

[Bardo]

If it helps, I prefer my nuts nice and loose...

Sorry - couldn't resist

[divingniknaks]

Jason,

You're just "that" side out today aren't you

.

[Bardo]

Originally Posted by divingniknaks

Jason,

You're just "that" side out today aren't you

.

Hehe. It's been one of those days, Phil - redressing the balance and all that