Re: Ventilation water trap was [PSUBS-MAILIST] Main ballast.

[Chris Nugent <dirkpitt77@yahoo.com>]

   Carsten,

 

   Didn't that make you nervous, having the hatch open with the ballast tank dive valve open as well?  :) 

     What about installing a T junction at the point where the pipe connects to the ballast tank, so that you could connect an extra hose from that to the compressed air supply.  Then you could just turn a valve and blow out the trap with your compressed air supply.  I'm probably over-engineering this.  OR maybe the same line that vents air when you dive could also be plumbed to run compressed air TO the tank when surfacing, so you have a built-in pipe cleaner, of sorts.  Well, anyway, just thinking out loud now.  There's probably a thousand ways to do this.

  

     Chris

Carsten Standfuss <MerlinSub@t-online.de> wrote:

> Hi Chris, 
>
> Sgt.Peppers has no tower or deck and for this reason all pipes inside -
> and this kind of water-pipe-trap in the ventilation pipe way. It dives
> fine 
> the first dive of the day - but after surfaceing it didn't dive a second 
> time. The water in the trap prevent that. I have to open the hatch, 
> come out with a small hosepipe - put this on the ventilation outlet, 
> open the divevalve - vaccum the water out of the trap via the hose
> conection from the outlet to my mouth.. If the water is out I hear 
> the sound from the blowing outlet and can close the hatch and dive. 
> The Trap is deep and the tank is shallow. 
>
> It must be easy to calculate that, The pressure 
> on the beginning of the captured water is more or less 
> equal to the pressure on the softtank bottom hole. 
> If you knows how high the water trap is - you can calculate
> if opening the vale blows the line or not. 
>
> tank trap outlet
> II
> IIIII II
> I ======II II
> I I II II
> I I II II
> I I =I===II
> II I
>
> inlet
>
> regards Carsten

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