We have a single handle faucet in our kitchen sink, it started having issues where the water flow would sometimes be fine, sometimes non at all, or somewhere in between, at random, but almost never what would be considered functional. The model is parts blowout; it has a cartridge style ceramic valve that one would assume works or does not, no in between.
So when the problem started I figured something in the valve was stuck, sure enough, when it would trickle, a sharp rap on top with a wooden spoon and it would open up and flow fully.
So lifetime warranty, contact manufacturer and they send me a new valve cartridge... This new one does it much less frequently, but it still does it.
Since the faucet is nothing more than a housing to route water through the valve to hoses and pipes... and just to make sure I was not losing my mind, I actually disconnected all hosing and verified there was no debris clogging one and moving around... My only reasonable conclusions are -- new valve flawed same as old or something else is happening.
We have no other faucets of this type in the house, and this is the only faucet having an issue.
I have noticed what seems to be some hammer in the pipes lately that I never seem to have noticed before, is it possible this could be pressure related? We live on level ground with several new duplexes built up the hill up the road which leaves us between them and the pipe from water company, and we had to have a pressure regulator put on our home service a couple of years back because of this and some blown pipes... (maybe needs adjustment again?)
Figured a plumber may have seen something like this before and could comment before I hire one to come diagnose further.
Please and thank you.