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 Hi Dean, 
I once saw a burst disk go on a dive tank. It was early morning so wasn't 
caused by heat expansion. 
I'm not sure how common this is, but if you had your tanks  in 
the sub this could be life threatening. 
A pump you could flick on would be handy. 
Alan. 
  ----- Original Message -----  
  
  
  Sent: Sunday, June 28, 2009 5:25 AM 
  Subject: Re: [PSUBS-MAILIST] Over 
  Pressure Valve Options 
  
  
  Hi Dean. I wouldn't call me one of the "experienced guys" as I'm as new 
  as you are, but ya, I think a little 12 volt tire inflator would have several 
  uses on a psub. Frank D. 
   
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