On Fri, 11 Sep 2009 07:45:44 +0100, Calvin Sambrook wrote:

You can get "fast flow" taps which are, well, fast flowing. Just like a
normal water butt tap but around 22mm OD.

Our butt came with something similar but it siezed up within a year
or so and was never very good in the first place. The 1/4 turn lever
valve "just works".

--
Cheers
Dave.