I've got a four tap kegerator, which works like a dream... most of the time. I've noticed that anytime I put on a sour beer, the faucet gets way sticky, and occasionally leaks after a pour — the beer will keep dripping out, even though the valve is closed, until I disconnect the coupler. The lines and faucets are cleaned with sanitizer and hot water before each new keg, so I don't think it's a sanitation issue. I've even disconnected the keg and thoroughly sanitized the faucet midway through a keg because it was working so poorly, but it was back to sticking and leaking beer a few pours later. Can anyone think of a reason why a beer with wild yeast or bacteria would be especially volatile on tap, and how to account for it?
Also of note: this is in an office where people are usually pouring beers fairly regularly. The sours have been less popular, though — maybe it's a result of beer not being poured through often enough, which lets residual sugars build up, which compromises the seal?
are you certain it is only when you pour sours? does not sound like a thing. i am guessing that your faucet is not tight or properly adjusted. the 630 is very good when properly adjusted but like anything else it does need some maintenance. swap couplers on the bad faucet and see if the faucet is still leaking. i think it is your faucet and not the beer. Cheers. edit- what office can i work at that has sour beer and three others on draft?
Happened on both of the two sours I've put on so far. Hasn't happened with any other beers. The problematic keg just finished, so I'll give everything a thorough breakdown and clean, tap something new, and see if anything happens. Could be that the sour thing is just coincidence, I suppose. And yeah, the office is pretty great. We actually do two taps for beer, one for chilled wine, and one for cold brewed coffee.
You mention using hot water and sanitizer. Have you tried cleaning the lines with beer line cleaner or other cleaning product?
