dripping shower or tap

hi i have a 3 knob bristan which looks like the js2 but my front chrome housing is chrome, one round on top for shower/tap, below another large round chrome housing with the water on/off, then hot/cold knob . whichever outlet is choosen shower or tap even after turing off water on/ff knob, there is still a noticable drip about half tub water per day. do i need a diverter or thermostate cartridge thanks, i dont know my model and couldnt find on bristan as last owner installed. thanks
Asked 9 years ago by Anonymous
You will have to remove the on/off cartridge to see if it is damaged etc as this is the probable cause.

Answered 9 years ago by Anonymous

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