Co2 transfer loop

[MashBag]

The regulator on a cylinder is designed and needed to bring the very high pressure down to a usable range.

No cylinder in this setup.
The second keg, provides the gas.

A corny keg is a much lower pressure even if you get to near it's upper working limits.

That is why I modified it and changed the gauges. Although I might tweak the ranges again.

I idea is to retain my priming gas and reuse it.

I could do this with a kegland inline reg.... but that doesn't read both pressures.

 

[Davegase]

No cylinder in this setup.
The second keg, provides the gas.


That is why I modified it and changed the gauges. Although I might tweak the ranges again.

I idea is to retain my priming gas and reuse it.

I could do this with a kegland inline reg.... but that doesn't read both pressures.

How about a 8mm duotight tee with kegland inline reg on one side and a pressure gauge on the other ?
Same setup as post number 20 but with the inline reg instead of the spunding valve.
Edit:
I've been using a couple of those white kagland secondary regulators for a couple of years now.
Very simple and very reliable.
I'm using two with a duotight tee to split my supply into my serving fridge.
Currently I have a best bitter which I carbonated very low, I've set the secondary regulator to five PSI with a short 3/8 beer line.
To me it's almost indistinguishable from a cask ale without the risk of oxidization.

 

[MashBag]

So far I have built this from spares.

Progress update. Seems to be working.

 

[Buffers brewery]

Is it a simple gas control board. One gauge, and two simple valves either side?

That’s a definite maybe. But. Consider binning the regulators. Consider two low pressure (2 bar) gauges fitted to “T”s either side of a Flow Control Valve. The spare ends of the two “T”s connect to hoses and gas quick connects. Set the FCV to closed. Connect one quick connect to the “gas supply corny”. The gauge on the “supply” side will indicate the maximum pressure available. This will reduce as gas passes to the “demand” side, AKA the dispensing keg. Connecting the other gas quick connect to the dispensing corny will result in the other gauge indicating the pressure in the dispensing keg, remember, the FCV is closed. When the dispensing corny pressure drops below the supply pressure the FCV can be cracked open to either allow the two pressures to equalise or raise the pressure in the dispensing corny to the required level at which point the PCV can be closed. I confess I don’t have my kegs on a constant regulated pressure gas supply. I connect my cylinder and pressurise them then disconnect the gas supply and only re-pressurise after a few pints have been poured.

 

[MashBag]

I confess I don’t have my kegs on a constant regulated pressure gas supply. I connect my cylinder and pressurise them then

Me too. Top up on demand. After pulling, to maintain carbonisation.

So are you saying...
Co2 corny > gauge > flow control gauge > beer tank

 

[Buffers brewery]

Me too. Top up on demand. After pulling, to maintain carbonisation.

So are you saying...
Co2 corny > gauge > flow control gauge > beer tank

Yes. I suggest a FCV instead of a simple tap to give a bit of control an gradually bleed the gas into the dispensing corny.

 

[MashBag]

Righto. Thanks.

After some trials, version 1.2 is on the bench.

 

[RoomWithABrew]

No cylinder in this setup.
The second keg, provides the gas.


That is why I modified it and changed the gauges. Although I might tweak the ranges again.

I idea is to retain my priming gas and reuse it.

I could do this with a kegland inline reg.... but that doesn't read both pressures.

Correct no cylinder that's why you don't need a reg. They are only needed for high pressure reduction in cylinders.

All you need is ball lock connector, T with a line going to a pressure gauge.
The gauge reads your fermenter/ gas generator source pressure.
Inline reg on the other arm of the T, this is set to your target keg pressure. Pressure in target keg will be as set on inline reg.
If you wanted something easier to read for your receiving keg put another T beyond inline and another pressure gauge.
But the purpose of the gauge on the inline reg is to show your target pressure.
Although those small gauges are a nightmare to read.

 

[Davegase]

Although those small gauges are a nightmare to read.

You can still get the original kegland secondary regulator without the gauge, it's cheaper and like you said you can fit a larger gauge in a tee piece.