[PSUBS-MAILIST] HP air whip

[hank pronk via Personal_Submersibles]

 Jon, I used to think HP all around was the way to go and still think it is fine, but I have regulators in the water on my DDW.  I have to say I like that for two reasons.  One as you mention, it is cheaper and easier to manage leaks.  The other is the air compensation system is all exterior, making it very clean and simple.  The more stuff outside the sub the better.  It is amazing how fast a sub can get cluttered.Hank
    On Tuesday, March 5, 2024 at 07:45:45 AM MST, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
  Thanks for the response James.  I found a USA supplier at Dive Gear Express that custom make them as well.  I am still pondering whether to bring HP into the hull or put first stage balanced regulators on the tanks and bring in 150psi (or there abouts).  I'm not bothered by HP inside the vessel but LP plumbing parts such as manifolds, pipe fittings, and valves are going to be significantly cheaper and more highly available.  I'm not sure there's a real winning strategy over the other either way, but if someone wants to try to convince me I'm listening.
Jon


    On Tuesday, March 5, 2024 at 09:08:27 AM EST, James Frankland via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 HI Jon
https://undersea-centre.com/

This is a UK company, but they are really good.  Give them a call and tell them what you are trying to do and they will be able to advise.
They made up a pressure reducing manifold for me.  I have 2x scuba whips with male din connections both ends.  The 2 hoses plug in and via a regulator, are then plumbed into 6mm 300bar swagelok pipe.  I will do the same on my new boat, except i probably wont bother with the regulator as i dont really think its required.  Will probably just go full HP all round.
Kind Regards
James
On Sun, 3 Mar 2024 at 18:35, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Where's a good source for HP whip to connect external SCUBA tank to my 1/4 npt hull penetrator?  Are you guys using chrome SCUBA whips or hydraulic hose with SS connections?
Jon
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