Seeking advice for small continuous seltzerator

[riotburn]

I want to add a continuous seltzerator set up to my house. The plan is to put the fridge in the basement directly under the kitchen and run the hoses to a tap on the sink. Since it's continuous seltzer and i have limited space, I dont necessarily need 5 gal ready to go. Would 2.5 -3 gallon corny keg suffice? Typical day consume 1-2 liters. If I take a liter, and it refills with water, how quickly does it carbonate? What are the smallest fridges that would work?

My parts list
- [ ] mini fridge
- [ ] https://kegland.com.au/products/sod...eg-reactor-lid-continuous-soda-water-solution $40
- [ ] https://www.tsbrass.com/products/equip/equip-glass-fillers/5GF-8P
- [ ] co2 tank
- [ ] co2 regulator - https://kegco.com/products/pro-series-commercial-grade-double-gauge-co2-regulator $40 or https://www.micromatic.com/en-us/pr...ure-0-60-psi-2-gauge/p-eXYonZOSMEO-GpIBalHDjA $71 or https://www.amazon.com/Taprite-T742HP-Primary-Pressure-Regulator/dp/B002UZUJ22/ $76
- [ ] https://kegland.com.au/products/eva...eer-line-gas-line?_pos=1&_sid=35dcc8282&_ss=r $10
- [ ] one way check valve on gas and water in line https://kegland.com.au/products/duo...y-check-valve-gas?_pos=1&_sid=95d0aa3fc&_ss=r $4 x 2
- [ ] ball lock disconnect liquid https://kegland.com.au/products/duotight-8mm-5-16-x-ball-lock-disconnect-black-yellow-liquid $3
- [ ] ball lock disconnect gas https://kegland.com.au/products/duotight-9-5mm-3-8-x-ball-lock-disconnect-grey-red-gas $4
- [ ] corny keg (optional second one for cold refill)
- [ ] carb stone https://kegland.com.au/products/0-5...n-stone-air-stone?_pos=4&_sid=c123b36fb&_ss=r $7
- [ ] inline water pressure regulator to get it 10-15 psi above co2 pressure https://kegland.com.au/products/duo...-8mm-5-16-push-in?_pos=1&_sid=d05510042&_ss=r $13

 

[Bobby_M]

Nothing wrong with a smaller keg. You just want to have say 10 times the volume in the keg as your typical hourly pour. A 10% drop in carbonation won't be noticeable and it will recover in an hour or so.

 

[riotburn]

What would be good is if you had two kegs. One connected to water and co2 and the other gets fed from the first and connects to the tap. Both with the continuous lid but somehow make it so the tapped keg doesn't refill until it gets to a quarter empty.

 

[Bobby_M]

It's over complicated for no reason. If you said someone will pull a liter every 10 minutes, you'd need something that cycled a little faster. I have a single keg continuous lid setup and it's never flat or warm. If you needed even a small nudge, you can run your incoming water into a small keg to prechill the water before it hits the continuous lid but it wouldn't need any special fittings. You'd just fill it up to remove any air pockets and run the incoming water into one port and the outgoing water would be the other port. It would just leave a certain volume of water sitting at fridge temps before it gets introduced into the carbonation/serving keg. This could also be done just by running the water through a narrow coil of stainless steel in the fridge.