Well, I'm sure everyone's familiar with the pleasures of using these things - caps leaking gas if you don't tighten it to just the right amount - too little, it leaks, too much the rubber ring distorts and guess what, it leaks. Also dripping taps and oozings from the rubber seal where the tap screws into the barrel.
Here's a new one - after three uses, I filled the barrel with a rather nice St Peters ruby ale, the pressure built up nicely, then it's all gone. Hmm - so I reprime it taking extra care with the cap. Same thing. And a third time. So now I've had to bottle the stuff and hope that it's still going to be alright - tastes ok at bottling though rather flat!
So what is the problem - well I'm pretty sure it's because the top of the barrel (that's supposed to press against the seal in the cap) isn't of an even thickness and it's distorted to being egg shaped, and the pointy bit of the egg shape is only just contacting the rubber seal. So it's weak there and when pressure builds up it just can't take it.
I'd really like to meet the guy who designed these things and shake him by the hand for a job well done...
Here's a new one - after three uses, I filled the barrel with a rather nice St Peters ruby ale, the pressure built up nicely, then it's all gone. Hmm - so I reprime it taking extra care with the cap. Same thing. And a third time. So now I've had to bottle the stuff and hope that it's still going to be alright - tastes ok at bottling though rather flat!
So what is the problem - well I'm pretty sure it's because the top of the barrel (that's supposed to press against the seal in the cap) isn't of an even thickness and it's distorted to being egg shaped, and the pointy bit of the egg shape is only just contacting the rubber seal. So it's weak there and when pressure builds up it just can't take it.
I'd really like to meet the guy who designed these things and shake him by the hand for a job well done...