A: Hi
It probably just needs a new flow cartridge here is the link.
http://www.showerdoc.com/shower-spares/mira/MIRA-459-05-Flow-Cartridge-Assembly
It is just possible that it needs a new Pressure Balancing Cartridge However I would replace the flow cartridge first.
Link to PBC
http://www.showerdoc.com/shower-spares/mira/MIRA-459-07-Pressure-Balancing-Cartridge
Answered 33 days ago | Anonymous