Customer has cartridges leaking in Roman tub valve. Problem has happened several times in short period of time expanded ideas to try to find additional reasons as to why cartridges fail so quickly found 5 gallon thermal expansion tank serving 100 gallons of hot water to be bad predicted additional pressure from thermal expansion to be the cause of cartridge going bad Leak seems to be warm water. Will return to replace cartridges and then expansion tank when parts arrive. Replace both Moen Roman tub cartridges and replaced 5 gallon thermal expansion tank with new bracket secured at wall after work was complete completed. Check for leaks and proper function.
