Pisa Cartridge Removal
Remove the front plate with the two Allen screws the cartridge should just pull out.
If not remove the plug from the body (Opposite side from the hose)you should then be able to get a screwdriver in underneath the cartridge and leaver it forward and out.
You can also remove the two inlet elbows this will allow you to get two screwdrivers in to the rear of the cartridge to lever it forward.
Finally if it is a surface mounted valve and you can’t get to the plug or inlet elbows.
Remove the front plate with the two Alan screws, then reassemble the knobs loosely you should then be able to fit two screwdrivers in behind the knobs and lever them forward against the valve body
Answered 12 years ago by The Shower Doctor
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Bristan Pisa Thermostatic Recessed With Adjustable Riser Shower Spares
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