If your shower control is leaking or your shower head is dripping then you will need a new cartridge
If your Temperature Control does not have the red button you probably have an OPTO model not an Aquarian
Cartridge Body, choose 214005 manual or 214004 thermostatic (if it has AQUARIAN on the On/Off Control then it is thermostatic). thermostatic cartridges have serial numbers begining 'T' whereas Manual ones begin 'M'
On/off control: 214012 white, 214013 chrome or 214015 gold
Temperature control: 214015 white, 214016 chrome or 214017 gold (if you dont have the red button you have an OPTO not an Aquarian)
