How to Replace the Flow Cartridge on a Mira Coda Pro EV (UK)
UK guide to swapping the flow cartridge in a Mira Coda Pro EV shower valve. TMV2 compliance, part numbers, tools.
Mira
The part
Fit a new flow-control cartridge on the Mira Coda Pro EV to fix stiff or leaking on/off — usually a 1/4-turn ceramic disc.
Isolate
Close the built-in isolators on the Mira Coda Pro EV valve body — accessed through the escutcheon plate.
Swap the flow cartridge
Some Mira valves use handed cartridges (L/R). Match the flat on the spindle to the handle orientation before refitting.
Commission
Balance hot and cold to within 0.5 bar. Run the Mira Coda Pro EV at max flow for 3 minutes.
Verify max outlet temperature stays below 46 °C per BS EN 1111 by shutting off cold and reading the outlet.
Frequently asked questions
- Standard or reversed?
- Standard Mira cartridges close clockwise. Reverse handles will require the -R variant.
- Any grease?
- Silicone grease only — petroleum jelly attacks the EPDM seals.
- OEM or aftermarket for Mira?
- For TMV2/TMV3 compliance always fit genuine Mira cartridges. Aftermarket voids the Coda Pro EV approval.
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