I’ve got a problem that I would love some advice on. We just installed two twin-pull Angram hand-pumps at our bar in Toronto. They connect to the casks via a trunk line, using Caskwidges.
The problem is, they suck beer back into the cylinder from the glass as you push the handle back. It doesn’t seem to affect the beer at all, but using 1/4 pint cylinders, it takes 10-14 pulls to fill a pint. Not four. This, of course, is annoying. The pumps are refurbished ones from Angram, who I will be calling in the morning, but for now I thought I would ask here. If it were one of the four, I would assume it was a bad seal in the cylinder, but it’s happening identically on all four, and the pumps just arrived from Angram. Am I missing a trick or something? Is there some adjustment or something we haven’t done? We’ve played with the spiles and valves in the Caskwidges, and it all seems to end up the same: about 3oz of beer coming out at the end of the draw.
Thanks for any help and advice,