How Do You Replace A Moen Shower Valve Cartridge?
A Moen cartridge shower faucet uses a plastic valve to regulate the flow of water through the shower head. If the shower uses a single cartridge, that cartridge is also responsible for mixing the flow of hot and cold water to the desired temperature. Over time, the internal components of a cartridge faucet corrode, particularly the O-ring, located on the bottom of the cartridge. Once the O-ring becomes damaged, water will leak from the bottom of the faucet’s handle, even when the shower is not being used. Thankfully, replacing a Moen cartridge faucet is a simple process. Step 1 Turn off the shower’s main water supply at the shutoff valve located next to the water meter. Step 2 Remove the faucet’s handle. Pry off the decorative cap located at the center of the faucet’s handle with the blade of a flat-head screwdriver. Remove the handle’s retaining screw with a Phillips-head screwdriver, then pull the handle away from the faucet valve. Step 3 Remove the plate that rests against the showe
