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RE: [PSUBS-MAILIST] Link to Video of "cue ball" arm



Your ball valve is only made to turn in one plane and is not designed to swivel around.  The ball would only be able to go up and down and would not articulate like the ball in the video.  By the time you modifiy the ball valve to do what you want it to do you will be putting more work into the whole project than if you started from scratch.
 
I would be willing to make this device for anyone who wants one for just the cost of materials and a meger compensation for my time.   I would like to test one under pressure to see if would pass a functioning test.
 
Brian
-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of Brent Hartwig
Sent: Wednesday, August 27, 2008 11:32 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Link to Video of "cue ball" arm

Hi Frank,

If you can also remove the nylon type seals used for the large SS ball valve, perhaps they can be used in the final assembly as your seals.  I have a small SS ball valve at the bottom of my sandblasting pot that is used to regulate the amount of sand coming out of the pot and into the air stream.  It takes several years of use before the sand eats away at it enough to not seal anymore. Also I have to shut this valve with sand are around it all the time, and it still seals properly with those nylon type seals for a long time. Your arm ball will not likely ever have any were near that much sand on it, so I think it will work well with the nylon type seals.

Perhaps you can use part of the SS valve body and machine it down to the design you want, then weld it to a small thru hull SS plate that can be attached to a SS ring that is welded into the hull. This way you can easily change the design in the future if you feel the need or use the thru hull for some thing else.

If your still concerned about the sand issue, I still think rubber boots of the CV joint axles will do the job nicely, and look good to boot. ;)'

Regards,
Brent Hartwig



From: ShellyDalg@aol.com
Date: Tue, 26 Aug 2008 12:31:44 -0400
Subject: Re: [PSUBS-MAILIST] Link to Video of "cue ball" arm
To: personal_submersibles@psubs.org

Hi Guys. A stainless ball from a valve is easy to get, and can be modified to work. Just weld over the slot where the handle goes, bush down the hole, and it's all set. Plus, the valve body/seals can be used with a little modification. The cue ball is great, if you can find a socket the fits it. Frank D.




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