1, the old faucet leaks. You can remove the screw on the rotary switch with a screwdriver first, and then remove the faucet switch.

2. Then take out the sealing apron of the inner valve core, because water leakage is generally caused by problems with the apron. You can adjust or replace the new rubber ring to improve the water leakage of the faucet.

3. If it is inconvenient to maintain, you can directly replace a new faucet.