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Date: Thu, 21 Sep 1995 16:12:06 GMT
From: Harry Railing <harry@ra*.de*.co*.uk*>
To: deepreef@bi*.bi*.ha*.or*
Cc: techdiver@terra.net
Subject: Re: Re: Why? - Pony Gauges
Rich,

I had a plug on the back of the contents guage of my deco mix blow out when 
I re-pressurised it at 12m/40ft prior to needing it at 9m/30ft.  I had to 
change the first stages underwater which would let a bit of water in <g>.  
Anyway, it worked OK.

In your message dated Wednesday 20, September 1995 you wrote :

> If you leave the valve off, then be sure to pressurize the hose(s) first,
> then turn the valve off.  This will reduce the chances of water getting
> into the hoses from backpressure.  However, if you go below a depth where
> the ambient pressure exceeds the interstage pressure of the regulator, or
> if the gas pressure in the hose drops due to leakage or bumped purge
> botton, then you will almost certainly get water inside. (I've seen it
> happen more than once). I don't know if this has any significant effect 
on
> the probability of a failure within a single dive, but if left unchecked,
> corrosion can render your pony regulator unreliable. 

-- 

|_|  _    _  _     <Internet: harry@ra*.de*.co*.uk* & harry@he*.co*
| | (_)_ |  |  |_| <CI$     : 100141,1632              <Harry Railing>
                 | <Snail   : 25 Dafforne Road, London SW17 8TY, UK

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