[PSUBS-MAILIST] Flush Mount Valves in MBT's

[Alan James]

Joe,
At conference Vance talked on building a pneumatically operated ballast valve
that has a low profile above the ballast tank & leaves no air bubble inside.
He handed out a diagram of it. He may possibly have it on file.
Looks easy to make.
Alan


________________________________
 From: Joe Perkel <josephperkel at yahoo.com>
To: "personal_submersibles at psubs.org" <personal_submersibles at psubs.org> 
Sent: Monday, December 9, 2013 9:13 AM
Subject: Re: [PSUBS-MAILIST] Flush Mount Valves in MBT's
 


Hi Alan,

That's similar to a Kingston isn't it? That shape would assure complete venting, one would have to be assured of fail safe reliability in whatever was used. I would like a normally closed fail safe mode in whatever style best assures sealing.

Joe



Sent from Yahoo Mail for iPad 



________________________________
 From:  Alan <alanlindsayjames at yahoo.com>; 
To:  Personal Submersibles General Discussion <personal_submersibles at psubs.org>; 
Subject:  Re: [PSUBS-MAILIST] Flush Mount Valves in MBT's 
Sent:  Sun, Dec 8, 2013 7:10:19 PM 


Hi Joe,
While thinking about the ballast valve, it occurred to me that
the drain pop up plugs found in modern bathrooms, are very
similar to what we want.
https://www.google.co.nz/search?client=safari&hl=en-gb&biw=768&bih=928&tbm=isch&sa=1&ei=47ukUvT-EsqhkwWt04DoAQ&q=drain+pop+up+waste&oq=drain+pop+up+waste&gs_l=img.3...46028.57398.0.58014.39.28.0.2.2.0.324.3866.8j5j4j5.22.0....0...1c.1.32.img..27.12.2132.cLok805IcCc
Hope that link came out OK. It was an image search on DRAIN POP UP WASTE
They would need to work upside down for our application, so they would be flush on the
inside of the ballast tank (eliminating an air trap) but extend a bit above the ballast tank.
Some models look like you could just stick an air line straight on to them, & with a spring 
In them, they would work.
There may be some model that is ideal.
Alan
Sent from my iPad

On 8/12/2013, at 2:09 PM, Joe Perkel <josephperkel at yahoo.com> wrote:


I need a little help understanding the installation of
remotely operated pneumatic valves in soft tanks. I’ve been looking at various
products on the Net, and from what I see, there doesn’t seem to be an off the
shelf remotely operated valve that would install flush and fully vent the tank.
What I’m looking for is a flush mount and a clean installation which eliminates
the exterior tubing routed to the conning tower.
>Am I missing a valve type or installation that would
accomplish this?
>Thanks
>Joewith 
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