How do you use a fixed basin tap wrench?

Step 1 – Select correct end

You’ll need to know the diameter of the nut you want to loosen or tighten before you know which end to use.

Most backnuts are either 27mm or 32mm AF (across flats). This is more commonly stated as a measurement of 1/2 inch or 3/4 inch BSP (British standard pipe).

Sink taps are usually 1/2inch BSP, however, most are fitted with flexi or copper tails, with the tap being secured seperately by much smaller nuts, usually requiring monoblock box spanners (ranging from 8-13mm).

Step 2 – Position yourself comfortably

You may have to apply quite a bit of pressure, especially if the fitting is old, so position yourself comfortably so that you can apply the leverage you need without overreaching or straining.

Step 3 – Align jaws

Align the jaws of the basin tap wrench with the flats of the nut. Once the jaws are aligned and secure, you can begin turning.

Step 4 – Rotate tool

Rotate the basin wrench about its vertical axis, clockwise to tighten and anti-clockwise to loosen. Ensure that the tap is secure so that it doesn’t spin when you rotate the tool.

If you are tightening the backnut on a loose tap, you should be able to do this without disconnecting the supply pipe, but it is advisable to turn off the supply to the tap first. Just in case!

Step 5 – Remove nut

Once the nut is loose, you can remove it by hand.