[Hugh R]

One of the two shower heads is dripping a lot. 15 years ago or so, I installed a his and hers shower heads and controllers with separate controllers. One side is dripping out of the shower head constantly. It has its own volume control (on and off) (left image) and temperature control (right image), its a Delta system and the Beauty plate says "2300 series) don't know if that is the system or the beauty plate series. Can't find the installation paperwork.

Since its dripping at the shower head, I'm guessing its the left volume control valve.

Went to HD and two local plumbing supplies and they said bring in the cartridge to match it up, the trouble is I saw nothing in their inventory that remotely looked like what I had. So I have to shut the water off to the house and go and see what I can find.

Any thought?