XPost: alt.home.repair   
   From: xxx@yyy.zzz   
      
   On 2022-12-14 19:41:51 +0000, Bob F said:   
      
   > Try the nozzle at 90 psi with air into a bottle of water. I'd bet it   
   > would blast water all over the place. Then imagine it at 800 PSI.   
      
   I'm not going to disagree until I've tried it. When I get home from work I   
   can try it out at home with just 120 psi from my air compressor.   
      
   The good thing is the automotive gun hole is so tiny I can barely see it.   
   The bad thing is the automotive gun is huge compared to what I need.   
      
   > I am pretty sure that any of these nozzles, all designed for lower   
   > pressures, have nozzles far to big for this use.   
      
   The smallest TIG welder hole opening I could find was 0.023", but it had   
   the advantage of being really tiny and already threaded. I'll stop by home   
   depot on my way home from work to see if I can find what the threads are.   
      
   > The 90 PSI hand gun would likely blow up at 800PSI.   
      
   I'm sure there is a good reason the gun says it is 90 psi, where even if we   
   double that, it's far too low, and besides, the gaskets have to handle it.   
      
   > Another thought - The sodastream system probably wastes 1/2 of the CO2   
   > it uses by loss to the atmosphere, because it releases almost all the   
   > CO2 that bubbles out of the water with each squirt into the   
   > unpressurized bottle.   
      
   I think that might be true to a huge extent, but I think the bottle itself   
   _is_ pressurized because it holds the pressure during storage in a frig.   
      
   It's not the bottle that isn't pressurized but the connection of the bottle   
   to the sodastream that has an overpressure valve, I think.   
      
   I couldn't get out of sodastream what pressure they pressurize the bottles   
   to, but they say the bottles "expire" after a few years.   
      
   > The way you do it with the carbonator cap on a   
   > closed bottle wastes almost none.   
      
   What I love about the carbonation cap idea, which I think it was you who   
   brought it up first, is that it's so simple in threading it together.   
   1. I get a dozen of the carbonation caps, one for each bottle.   
   2. I get one of the Y-shaped fillers and I fill up each bottle.   
   3. At that point I can let it sit for days to slowly carbonate.   
      
   As you said, the carbon dioxide in the water will eventually equilibrate   
   with whatever partial pressure of CO2 is in the headspace, but I can always   
   squeeze all that out and repressurize the headspace whenever I want to.   
      
   It seems to be the slowest method overall but if I do ten or twenty liters   
   at a time, it's actually the least amount of fuss. I would only have to   
   refrigerate the bottle a day or two before using it so the frig can hold   
   only one bottle while the other nineteen can be on a pantry shelf like a   
   soda bottle sits in the shelves in the grocery store.   
      
   > A .5 micron stone at low pressure on   
   > your bottle might be optimal, especially if you can come up with a   
   > restricting nozzle to limit the flow to an optimal bubble rate (or   
   > slowly increase the pressure valve as the pressure in the bottle   
   > increases and bubbles decrease)   
      
   The carbonating stone idea is still in the cards, mainly because it's so   
   simple and so cheap but the more I look at it, I have to add a check valve   
   of some sort so that the water doesn't flow back to destroy the regulator.   
      
   > Using the carbonator cap with the bottle, slowing increasing the   
   > pressure, and shaking it too, to keep the bubbles from reaching the top   
   > so fast might optimize what you have now.   
      
   I didn't think of that, but the carbonating cap can come with a nozzle in   
   addition to the soda bottle threads, so yes, two can be done at the same   
   time.   
   1. I pressurize the head space   
   2. I add gas from the stone which sinks to the bottom.   
      
   Right now I'm going to go to home depot to see what male threads are on the   
   end of the copper tip 0.23" tig welder contact tip, because all I need then   
   is to attach that copper tip to a piece of female threaded pipe attached to   
   the bottle cap.   
      
   Please keep the ideas coming as this is replicating a soda stream without   
   having a sodastream to replicate.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)