I have a kitchen faucet which is about 10 years old which squeels when the
water runs. It is a single-lever delta type.
Step 1... removed the airator (sp?) . no effect.
Step 2 ... I disassembed the whole valve assembly and removed quite a bit of
mineral scale (scaping and a bit of vinegar). The rubber seals appear to be
in good shape.
I reassembleed and it was quiet.... for about a day!
Any ideas on how to shut this thing up?