Both of Moen 1200 and 1225 series are designed to allow quick and straightforward set up while replacing the broken cartridges in your shower room or kitchen faucets. Replacing broken Moen Cartridge 1225 or 1225B. Flowrite Replacement Moen 1225 1225b Stem Cartridge Replacement Kit Faucet Repair Moen Faucet The difference between the 1225 and the 1225B is with the packaging. Moen 1225 vs 1225b . Furthermore how do I. The Moen 1225 and 1225b are the same replacement cartridges. The difference between the 1225 and the 1225B is with the packaging. Next the basic steps are to disassemble the handle remove the cartridge reinstall the new cartridge and test your water. Plus it gives good volume support with temperature memory. The cartridges are exactly the same the package in which the part is displayed is different. Cartridge Identification and Installation Help. Invented in the year 1981 the Moen 1225 can fit into 1-handle non-pressure based balanced valves and Moentr...