XPost: alt.home.repair   
   From: bobnospam@gmail.com   
      
   On 12/14/2022 12:19 PM, gtr wrote:   
   > 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.   
      
   Welders work at fairly low pressure normally, so they will have a much   
   bigger orifice than what you need.   
      
   >   
   >> 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.   
      
   Squeeze the bottle gently. If it feels soft, add more. No reason to wait   
   days, or even many hours. If your regulator is set to 50PSI, stop when   
   when the bottle feels firm. You don't want it to be 50 when you remove   
   the cap or it will be a gusher.   
      
   >   
   > 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.   
      
   Why squeeze out the CO2 at the top, just to replace it with more?   
   Just add more CO2.   
      
   >   
   > 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.   
      
   If there is no leak, there is no reason it should flow back. Pop the   
   hose off the cap it you are worried.   
      
   >   
   >> 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.   
      
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