The newer Propane tanks with the triangle valve handle have a float inside to 
prevent over filling.
The two types of connections are the original left-hand female thread which you 
used a wrench, the new style outside thread that you can tighten by hand.
  ----- Original Message ----- 
  From: Bob Kennedy 
  To: [email protected] 
  Sent: Friday, January 15, 2010 4:32 PM
  Subject: Re: [BlindHandyMan] Re: Propane gas.


    
  It has to do with a type of valve they were required to have. I don't know 
what the difference is but the tanks with a triangle valve on top are the newer 
versions.
  ----- Original Message ----- 
  From: Lee A. Stone 
  To: [email protected] 
  Sent: Friday, January 15, 2010 4:30 PM
  Subject: Re: [BlindHandyMan] Re: Propane gas.

  speaking of propane does anyone know why several years ago they changed 
  the fill part of the smaller tanks? we have had 3 5 gallon tanks we 
  used for our campstoves and now even the campstove stoves we are told 
  have a different hookup. is this another way to fill the land fills and 
  produce new products or was there a safety issue? Lee

  -- 
  There's no use in having a dog and doing your own barking.
  .

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