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    Mira Excel thermostatic shower valve poor pressure and temperature

    I think I'll have to do some more investigation and measure and compare the flow rates of both showers with the hoses removed. I'll also try changing the maximum temperature setting on the new cartridge.
  2. P

    Mira Excel thermostatic shower valve poor pressure and temperature

    I can't see any strainers other than the ones on the cartridge or any non return valves. You can push a bottle brush into both sides of the cartridge housing with no immediate obstructions. I haven't removed the piping, its all soldered copper and partially in a wall, so I may need a plumber for...
  3. P

    Mira Excel thermostatic shower valve poor pressure and temperature

    Yes the flow rate is not as good as the other shower on any temperature setting - but the one with good flow gives hot water at a setting of 2 and the one with poor flow doesn't provide hot water until nearly the maximum setting.
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    Mira Excel thermostatic shower valve poor pressure and temperature

    I have 2 Mira Excel showers installed in separate rooms on a low pressure gravity fed system. One works fine and produces fairly good pressure and good temperature at a low setting (around 2). The other has had poor pressure and requires the controller to be set to near maximum to get a good...
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