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Thanks for the reply. Well, the only thing I'm sure of is I'm committed to getting from 1/2" ID into QDs. Don't care how I do it other than the simpler solution the better

Thanks - ah, good observation, everything you wrote. Yeah was thinking maximizing the size of tubing until getting to the QD would maximize throughput but maybe not. Nonetheless, I'm stuck with 1/2" ID barb connectors at the pump, so how to do the step-down? Are SS 1/2" ID to 3/8" ID...

Are you saying that will go on an ordinary QD threaded swivel screw attachment point?

Looking for options to connect 1/2 ID line so as to run through corny liquid / gas QDs. Imagine two 1/2" ID lines going to / from liquid pump ... wanting to draw out of corny liquid post, back into gas post, for cleaning / rinsing. The immediate answer to the question would be ball-lock QDs...

Added 3/8 - 16 304 SS finishing nut to give springs a higher mounting point - more leverage - and again borrowing from @Beermeister32 a finishing handle ...

So you went down from 14 to 9 ... I'm guessing my target pressure fermentation PSI is going to be around 14 ~ 16. Thanks for contributing to this thread

Thanks for this thoughtful reply -

Thanks to @Beermeister32 for concept and initial design - simply an alternate take

Bro, those are some great links ... you've answered the question ... much appreciated

Goal is cycling cleaning liquids through corny posts ... Recently acquired Gile House pump mostly for cleaning corny tubes by cycling hot rinse water and then Star San solution - out through liquid post, back in through gas post. Pump has 1/2” NPT male fittings. The interiors of my kegs are...

I'm staying far away from O2 exclusion ... learned my lesson nine months ago when the Congregation of The Church of the Holy Floating Dip Tube wanted me banished to a cave as a Non-Floater heretic :p

Thanks for the reply - I'm learning a lot here. Could you kindly post a link to your preferred place to purchase those in bulk? Thanks -

Thanks for those replies. Yeah, those rings look fine and the price is right. I guess I'm not so concerned about what's causing the expansion and if it is Star San there's nothing that can be done other than just frequently change them Existing rings are from a mix of different replacement...

Good question - hadn't really thought about it but thought silicone was considered a preferred food-grade material. My one / two gallon batches don't stay around more than a few weeks so probably not so concerned about O2. What would be preferable? Any idea what would cause ordinary rings to...

Thanks ... yeah that's a lot better than two for five dollars which I have seen. Used to keep sticky notes on kegs saying, "O-rings replaced on ...." but that ended with frequently running through post o-rings. I make small one / two gallon batches so kegs see a lot of processing - serving...

Could anyone please make recommendation on where to purchase bulk quantity corny ball-lock post silicone o-rings? Thanks -

Got some results. Three batches pressure fermented at about 65 F to about 18 PSI and given CO2 saturation into beverage, when refrigerated down to 30s F seems to have experienced a pressure drop of about 2 PSI, down to about 16 PSI. So not much, and again, that's given a large head space volume...

Who knew these existed?! :oops: :oops: :oops:

Just received a brewing pump to cycle cleaner through lines. So, I'm thinking adding about four to six inches of water with PBW or Star San or clear water, and a final Star San pass-through each stage through the tubes for a few minutes with the new pump. Will also be cleaning lines at the same...

Yeah, that's what I was trying to convey. I'm thinking you only need a few ounces of sanitizer switching that around and blowing it through the tubes accomplishes same thing as if the keg were filled I hope. And a few ounces doesn't foam up enough to half fill the keg with foam. Now, for PBW...