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I would be less concerned with yeast drift when placing wort directly onto a used yeast cake, and more concerned with the buildup of non yeast sediment, especially if you do significant dry hopping straight into the fermentor. Also when I do this, I try to keep oxygenation to a minimum as IMO...

I used to use a technique that you could use with that small ffl thread PRV. Adjust the main regulator to get the pressure to be a bit above what you want as your release pressure while having CO2 from the reg attached into to the liquid out post (like the Ross keg carb method), This is...

sorry that * should be a /

The lower bound of its pressure relieving application will be determined by the springs stiffness and also depend on the length of the spring carrier compared to its uncompressed length, as well as the diaphragm properties and valve seat design. It could be 0.5 psi, it could be 5 psi, I think...

Sure, this is the kind of PRV you would want on a reaction vessel or tank, to maintain very tight conditions upstream. https://straval.com/products/relief-valves/relief-valve-low-pressure-diaphragm-control-inline-threaded-rvi-20/?size=16#size_table That's a fun page to look at because you can...

I've been a lurker here for ages, but I know a little about this, and I think you've got it the wrong way round. Diaphragm PRVs are generally preferred in situations in which you require accuracy and low hysteresis (the drop in pressure upon relief), and a big chunk of that simply comes down to...