[PSUBS-MAILIST] HP Scuba hose

[emile via Personal_Submersibles]

The HP port has usually a restriction . A safety feature for the case of a Hp hose burst.

Could maybe enlarged.

 

Br, Emile

 

Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] Namens Jon Wallace via Personal_Submersibles
Verzonden: zondag 11 maart 2018 18:16
Aan: Personal Submersibles General Discussion
Onderwerp: Re: [PSUBS-MAILIST] HP Scuba hose

 

Is there some other way to tap HP off a SCUBA tank other than first stage regulator?  I was thinking of running the HP hose to a manifold that would feed the ballast tanks.

 

  _____  

From: Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org 
Sent: Sunday, March 11, 2018 10:54 AM
Subject: Re: [PSUBS-MAILIST] HP Scuba hose

 

HP SCUBA regulator orifice is 7/16-20 UNF 2B thread. There are Swagelok and other fittings which will work, but watch your wrench clearances when using multiple adjacent ports. On that note, LP SCUBA ports are either 3/8-24 UNF - 2B (most common) or 1/2-20 UNF - 2B (less common). Be aware that while most HP SCUBA SPG hoses have a pinhole bore in order to reduce the consequences of a HP hose failure, some SCUBA regulators incorporate the pinhole restriction into the regulator itself, which will limit the available flow rate at high pressure. Of course, if your drawing gas off at high pressure anyway, why go through the reg?

Sean

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-------- Original Message --------
On Mar 11, 2018, 07:12, Jon Wallace via Personal_Submersibles < personal_submersibles at psubs.org> wrote:

 

 

Are there adapters that can change a SCUBA HP hose fitting to NPT?

 

Jon

 

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