A bathroom sink pop-up stopper is a very convenient feature, and while the installation is usually easy, occasionally the process is complicated due to variations in the fixture or fittings. If you need to install a new pop-up drain for any reason, these instructions will simplify the process.
NOTE: In this example, the parts are being installed while the sink is removed from the vanity. In practice you may be installing the pop-up drain on a sink that is already in place.
Equipment / Tools
- Channel-type pliers
- Pop-up drain assembly
- Pipe joint compound
- Plumber’s putty
Remove the Old Drain Assembly
Loosen and remove the P-trap from the branch drain and sink drain tailpiece, using channel-type pliers. Next, remove the old pop-up assembly, if there is one. Use channel-type pliers or a basin wrench to remove the mounting nut from the tailpiece on the old drain assembly, then lift the assembly clear of the sink. Clean the sink thoroughly of debris and old plumber’s putty.
Prepare the New Pop-Up Drain Stopper
Disassemble the pieces of the new pop-up assembly, and unscrew and remove the mounting nut from the drain tailpiece. Install the plastic washer then the rubber washer and push them all the way down on top of the mounting nut, as shown here.