I had my first attempt at spunding recently. Had transferred at the right time to a purged keg and attached the spunding valve. It looked good for a couple days but then lost all pressure overnight. I had changed to a ball and spring with thumbscrew type from what I had built. The pressure overcame the spring or the ball did not seat. Who knows.
I put my old setup of just a petcock for the valve that is manually opened. It looks like a car radiator drain valve. After it looked done I put on the co2 in the fridge.
The beer came out fine. I’m trying to time a Lager ferment to spund now and will stick with the old petcock. Any thoughts on what day is a likely day to transfer for a Vienna Lager using WY 2124.