How to install a Kitchen Sink Mixer Tap
Transform Your Kitchen: Installing a Kitchen Mixer Tap
Upgrading your kitchen sink mixer is a straightforward task that can significantly enhance the aesthetics and functionality of your kitchen space. Replacing tapware is DIY friendly and not violating Australia Plumbing Regulations.
This guide provides brief instructions for installing a new kitchen mixer tap, complete with the necessary tools, steps, and safety precautions. If you are uncertain about the process, we strongly suggest you step back and hire a licensed plumber to perform the installation.
(Credit: Phoenix Tapware - Pull-Out Sink Mixer ‘How to’ Install Video)
Essential Tools and Materials
Tools:
- Adjustable spanner or basin wrench (ideal for tight spaces)
- Phillips and flathead screwdrivers
- Pliers (long-nose and standard)
- Tape measure and pencil
- Torch or headlamp for under-sink work
Materials:
- New kitchen sink mixer with mounting kit and hoses
- PTFE thread tape for threaded joints
- Rubber or fibre washers and O-rings (usually included with the tapware)
- Silicone sealant or plumber’s putty if specified by the manufacturer
- Flexible braided hoses compliant with AS/NZS 3499 (usually included with the tapware)
Safety gear:
- Safety glasses
- Gloves
- Bucket and towels to catch residual water
Step-by-Step Installation
1. Remove the existing tap
- Turn off water at the isolation valves under the sink; if none are fitted, shut off the main supply. Open the tap to relieve pressure.
- Place a bucket beneath the connections. Use an adjustable spanner to loosen the hot and cold supply nuts and disconnect the hoses.
- From under the sink, undo the mounting nut or bracket. Lift the tap out from above and clean away any old sealant or residue.
2. Prepare the sink or benchtop
- Confirm the tap hole size and alignment match the new mixer’s specifications.
- Check the mounting surface for cracks or corrosion, then clean and dry thoroughly.
- Fit any gasket or O-ring supplied. If recommended, apply a thin bead of neutral-cure silicone around the base.
3. Install and connect the new mixer
- Feed the mixer hoses through the tap hole and position the tap correctly.
- From underneath, fit the mounting plate and nut, then snug the mounting nut with a basin wrench. Do not overtighten.
- Apply PTFE tape to male threads where required. Connect the hot hose to the left isolation valve and the cold hose to the right. Tighten firmly without over-torquing.
These steps outline how to install a kitchen mixer tap for most modern setups. If your layout differs, we recommend hiring a licensed plumber to perform the installation.
Final Checks and Adjustments
- Turn on isolation valves slowly and observe each joint and the tap base. If drips appear, tighten slightly or reseat the washer.
- Wipe everything dry and recheck after a few minutes.
- Move the mixer lever through its full range to ensure smooth operation.
- Confirm aerators or flow restrictors are fitted correctly. If pressure is uneven, inspect hose connections and valve openings.
Frequently Asked Questions
Do I need a plumber? Many homeowners can follow a guide to install a kitchen mixer tap if the existing plumbing and isolation valves are in good condition. For adding valves, altering pipework, or dealing with damaged fittings, hire a licensed plumber to meet Australian regulations. At any stage if you are uncertain about the process, we strongly suggest you step back and hire a licensed plumber to perform the installation.
How long will it take? A straightforward replacement of a kitchen sink mixer typically takes 30 - 60 minutes, including removal, fitting, and leak testing.
What if there are no isolation valves located under the sink? Turn off the main water supply and consider having a plumber install isolation valves for convenience and safety in future.