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How to fit a new mixer tap to kitchen sink

Updated February 21, 2017

Kitchen mixer taps allow the hot and cold water to be blended to the desired temperature with the movement of a single handle. Many new homes are fitted with mixer taps, and some older homes have had them installed during remodelling. Measuring the distance between the holes of the sink to ensure a proper fit should precede the purchase of the new mixer tap. Once this has been accomplished, you can install the mixer with the proper tools and basic plumbing know-how.

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  1. Measure the distance from the centre of the two holes to the right and the left of the centre hole using a tape measure. Record the measurement with pencil and paper. Have this information with you when buying the new mixer tap.

  2. Roll a thin bead of plumber's putty in your hand and place it around the perimeter of the mixer tap seal where the tap and the seal will meet. The new seal is included with the tap along with other essential hardware.

  3. Place the seal onto the surface of the sink aligning the seal holes with the sink holes.

  4. Insert the mixer tap through the holes of the seal and press it firmly in place on top of the seal. Ensure the tap is aligned with the seal and seals well with the bead of plumber's putty.

  5. Install the mixer tap retaining nuts on each of the tap inlet pipes from beneath the sink. Tighten the nuts clockwise by hand until snug.

  6. Check the positioning of the mixer tap for symmetry and ensure a proper fit exists between the tap and the seal. Once the check is complete to satisfaction, tighten the retaining nuts using a basin spanner.

  7. Wrap a layer of pipe sealing tape clockwise around each of the two water inlet pipes of the mixer tap.

  8. Connect the hot and cold water supply pipe lines to their respective inlet pipes on the mixer tap. Tighten the pipe fittings clockwise using an adjustable spanner.

  9. Raise the handle of the new kitchen mixer tap to the fully open position and centre the handle to allow an equal flow of hot and cold water when pressure is restored.

  10. Remove the aerator from the tap spout by turning it counterclockwise by hand.

  11. Restore water pressure to the kitchen sink and allow it to flow freely to purge air and any sediment from the supply lines. Run the water for approximately 15 seconds.

  12. Turn the mixer tap off and replace the aerator.

  13. Tip

    Tap seals are also known as "putty plates."

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Things You'll Need

  • Tape measure
  • Pencil
  • Paper
  • Plumber's putty
  • Basin spanner
  • Pipe sealing tape
  • Adjustable spanner

About the Author

Max Stout began writing in 2000 and started focusing primarily on non-fiction articles in 2008. Now retired, Stout writes technical articles with a focus on home improvement and maintenance. Previously, he has worked in the vocational trades such as automotive, home construction, residential plumbing and electric, and industrial wire and cable. Max also earned a degree of biblical metaphysician from Trinity Seminars Ministry Academy.

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