For 20-30 years we have had what I thought was a Delta kitchen faucet which seemed to perform reasonably well
It is the one with a button at the top of the pull out part that can switch from the single aerated spray to to wider individual-jets spray.
It has become increasingly stiff / difficult to operate and now mostly is either on full force or off.
Every couple of years I have had to change the pull out part. They either start to leak from their base and send water down the flexi onto the cabinet floor. Or they stop switching from aerated spray to multi-jet. Recently they have been ARRIVING in non-changing mode, so I reject them!
When I tried looking into this I seem to have discovered that my unit is a Houzer model 361, - a company I had never heard of! And when I called Houzer to see if there was any maintenance on this faucet, they said they had bought the company from Tapco in 2018 and would I please cal tapco for assistance. Some hopes!
Does anyone know of a cure for the stiffness please? It isnt caused by hard water in our locality and I am wondering if this stiffness in the faucet could be caused by the increasing cheapness of the components in the pullout bit?
The only thing to add to this description is that one time i had to change the pull out chinese bit, there wasnt a cheap one on ebay so I had to buy some almost equally cheap one made in New York, - WHICH WAS EVEN STIFFER! (So I kept it as a spare)