The reasons for replacing a kitchen mixer tap vary from necessity--as in the case of leaks or other malfunctions--to the desire for an aesthetic change in decor Considerations for this project include replacing the old tap with one that fits into the same holes in the kitchen sink as well as the additional hole for the sprayer nozzle, if applicable. Replacement of the mixer tap is a job you can complete in under two hours with a few tools that are available at the local hardware store or home centre.
Turn off water supply to the kitchen mixer tap.
Turn on the tap to relieve any residual pressure in both the hot and cold water lines.
Disconnect the mixer tap water supply lines under the sink using an adjustable wrench.
Disconnect the hose fitting for the spray nozzle (if applicable) using the adjustable wrench.
Remove the mixer tap retaining nuts from below the sink using the basin wrench.
Remove the spray nozzle collar retaining nut (if applicable) using the basin wrench.
Remove the kitchen mixer tap from the upper surface of the sink. Use a rocking motion if needed to loosen the base seal under the tap.
Remove the spray nozzle hose and collar (if applicable) from the upper surface of the sink.
Clean the surface of the sink with a course sponge where the kitchen mixer tap and spray nozzle were seated.
Roll a thin ring of plumber's putty and place it around each of the sink holes.
Place the new kitchen mixer tap into the holes of the sink and press firmly into the plumber's putty.
Install the mixer tap retaining nuts from beneath the sink. Tighten the retaining nuts finger and then check the tap from above for proper alignment.
Tighten the mixer tap retaining nuts using a basin wrench. Take care not to over-tighten.
Wrap a layer of pipe sealing tape around the threads of the new kitchen mixer tap water supply lines beginning in a clockwise direction.
Connect the water supply lines to their respective mixer tap lines using the adjustable wrench. Cold water connects on the right and hot water connects on the left. Take care not to over-tighten.
Install the new spray nozzle collar into the top of the sink (if applicable).
Install the spray nozzle collar retaining nut and tighten it using the basin wrench.
Connect the spray nozzle hose fitting to the kitchen mixer tap from beneath using the adjustable wrench or the basin wrench, as needed.
Remove the kitchen mixer tap aerator with the combination pliers by turning in a counterclockwise direction. Place a few turns of electrical tape around the jaws of the pliers to protect the aerator's finish from be scratched.
Restore the water pressure to the kitchen mixer tap.
Open the kitchen mixer tap and allow a stream of water through the hot side and then the cold side to flush out any sediment that may be in the lines.
Close the mixer tap and reattach the aerator using the combination pliers with electrical tape on the jaws.
Follow any manufacturer's recommendations or warranty guidelines.