my toilet is slow filling (10-15 minutes) and makes a hissing sound. i've taken it apart and cleaned the rubber diaphram (it wasn't dirty anyway). the water is coming out of #1 (the diaphram end).

there's a plastic top (#2) connected to the top of the valve assembly. i don't know what it is or what it does. it's got 4 holes in the front (#2) and a tube that goes down into the tank (#3).

what is this called? it doesn't seem to do anything - i can remove the plastic top (#2) and nothing changes; no water comes out of the top.
what does it do? how does it work?
is water supposed to come out of #1 (the diaphram end) or #3 (the tube end)?



thanks.

KeepItSimpleStupid

Is it possible that a spring is missing on the diaphram?

hkstroud

Replace the diaphram. Since the water supply isn't blocked or restricted it has to be the defective part, even if it looks alright to you. It certainly should be a replaceable part.

plop

thanks for all your help. i've decided to replace the bathroom suite within the next month, so i'll live with the problem until then.