Petefin
Active Member
- Joined
- Dec 26, 2019
- Messages
- 69
- Reaction score
- 31
Hi @xozzx,
Simply a bladder inside the King Keg that I can fill with air via a schrader valve.
As the pressure in the keg, from the secondary fermentation drops as I drink the brew, I replace it with air. The bladder will not be under any real pressure as it will only be equalising the pressure inside the keg. There will be a very slight pressure differential to inflate the bladder, possibly 1/2psi so not much chance of air leaking into the brew.
I needed a bladder that could expand to the size of the King Keg and a condom should do the job fine. You can get five gallons of water in one before they fail and I went for a"extra safe" model!
The mechanics of getting one to seal is quite simple. I have a sealing ring fabricated that will seal on the O ring at the end of the condom and a valve fitting that will clamp the ring onto my modified King Keg cap.
Still waiting for the valve to arrive, will post some photos as soon as it does.
Here is a photo of the ring and condom and the half finished cap.
The cap will have two schrader valves fitted, one to inflate the bladder and one to pressurise the keg for testing purposes. I will also fit a guage and pressure relief valve.
Cheers, Pete
Simply a bladder inside the King Keg that I can fill with air via a schrader valve.
As the pressure in the keg, from the secondary fermentation drops as I drink the brew, I replace it with air. The bladder will not be under any real pressure as it will only be equalising the pressure inside the keg. There will be a very slight pressure differential to inflate the bladder, possibly 1/2psi so not much chance of air leaking into the brew.
I needed a bladder that could expand to the size of the King Keg and a condom should do the job fine. You can get five gallons of water in one before they fail and I went for a"extra safe" model!
The mechanics of getting one to seal is quite simple. I have a sealing ring fabricated that will seal on the O ring at the end of the condom and a valve fitting that will clamp the ring onto my modified King Keg cap.
Still waiting for the valve to arrive, will post some photos as soon as it does.
Here is a photo of the ring and condom and the half finished cap.
The cap will have two schrader valves fitted, one to inflate the bladder and one to pressurise the keg for testing purposes. I will also fit a guage and pressure relief valve.
Cheers, Pete