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   I wrote:-
> ... That is why I much prefer cylinders with the valves at the bottom, and a
> long high-pressure tube running up to the top of the cylinder(s) to fasten
> the regulator on in the usual place.

  "DYER, BILL" <BILL.DYER@mi*.co*.uk*> replied (Subject: Re: reaching your
own
valves):-
> I am very interested in this way of using upside down doubles. Could you
> describe your system in more detail?

      [TOP]     __________________   [BOTTOM]
               /                  \
 regul-        |                   )==#@@ valve
 ator     xx   \__________________/   #
 fastened xx==========================#
 on here  xx    __________________    #
               /                  \   #
               |                   )==#@@ valve
               \__________________/

  It isn't <my> system: (1) I saw it on a fullface mask aqualung made by
Normalair (later Draeger Normalair) in Yeovil in England some time around
1970; (2) it was used in a constant-flow (bottom-walking and industrial)
compressed air set made by a Japanese called Ohgushi early this century.

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