Hi there, hope you might be able to help, and hopefully this will make sense lol
for some reason debris keeps becoming clogged in the pipe from the valve carriage to the cylinder, when i remove the valve carriage, anything that is reasonably weighty, for example a cat biscuit cannot seem to be sucked up high enough to get into the cylinder.
so if i remove the valve carriage the biscuit is still sat there. or it falls back down into the U-Bend, and rattles around in their, if i place my hand over the bottom of that pipe with the valve carriage removed, the pipe is able to suck hard enough so that the biscuit can reach the cylinder
do you think it would be worth changing the valve carriage seal? or the valve carriage itself, or could it be something else?
many thanks for any help :)