Step 1 Apply Plumber's Putty to Sprayer Base
Apply a 1/4-inch bead of plumber's putty to the bottom edge of the sprayer base. Put the tailpiece of the sprayer base into the sink opening.
A sink sprayer adds functionality to your sink. They're easy to attach, but you'll need a sink with a hole intended for a sink sprayer. As with any plumbing part, you'll be better off in the long run if you choose a quality sprayer from a well-known manufacturer.
There are 3 steps to completing this project:
Apply a 1/4-inch bead of plumber's putty to the bottom edge of the sprayer base. Put the tailpiece of the sprayer base into the sink opening.
From underneath the sink, put a friction washer over the tailpiece. Screw the mounting nut onto the tailpiece and tighten it with a basin wrench or with a pair of slip-joint pliers. Wipe away any excess putty from around the base.