toilet fill valve

Recently changed my toilet flapper with an OEM replacement for the Toto CST854. After changing the flapper and shutting off the water to the toilet, the tank drain in an hour. Running my finger along the seat for the flapper indicated with the blue arrow, I could feel deposits on the lip. I...

A contractor replaced our toilet recently with an Ove dual flush model and the fill valve always seems to be hissing. I'm not sure what model the toilet is, but the fill valve resembles the one in this YouTube video. A few questions: 1) The hissing stops when I shut off the water line to the...

I have a gerber toilet in one of my rental properties, it appears to be in good condition but I can hear it filling the tank periodically when it isn't even being used. I replaced the flapper thinking maybe it was leaking, still was filling periodically. I replaced the fill valve thinking...

The thermal expansion tank I installed in October should not have anything to do with this going on right now. I hooked up a water pressure gauge in the basement sink on a direct branch from where the water comes into the house. At first the pressure reads 80 psi. I think this is already...