Watter Butt Tap - Flow

[Addled Jim]

Folks,
I'm about to put a Xmas brew into a PB to take away over the holiday, I decided to get a water butt tap and attach the float as I would on the barrel tap - the thing is the flow from water is considerably less than from the same float/barrel tap set up. Obviously there is no pressure to force the water out but with the lid off and 1/2 full the trickle is worrying me.
Is this normal and part of the greater control they offer - I don't want to go ahead and sterilise before asking this question?
Thanks

[Fil]

fwiw i use ebay sourced waddington and duval brand water but taps with hozelock style spouts on some FVs. when a 1/2" (12.5mm) pvc hose is attached with a hozelock connector, the beer drops out the FV at a great rate I suspect the narrowness of your feed tube from the float is the limiting factor in your test set up (perhaps kinked or bent too??) as well as the lack of upto 12psi pressure behind the liquid.

however i dont know just how much pressure a water but tap will contain before it starts to leak??

[joe1002]

Check the time side of the tap. I bought a couple and found they had some plastic on the inside of the tap which I had cut out. After that they flowed much better.