A reverse-pressure tap is similar to the normal tap only upside down. The washer moves upwards to the seat when the tap is turned. To change a washer in reverse pressure taps there is no need to turn off the water supply because when the body is removed an internal check valve closes to prevent water flow.
‘Put the plug in’ – Insert the plug into the hole, this will save any small objects that might fall from the tap during repair.
Removing the body -Undo the nut above the body of the tap.
Once this is done the body can be removed by undoing the tap as if you were turning the tap on.
Don’t be alarmed by the water that runs, keep unscrewing the body until it comes off.
When the body is removed the internal check valve will operate to stop the water.
Replacing the washer -By banging the nozzle of the body empty out the inner workings of the tap.
Bang the nozzle of the body to loosen the inside.
Once the inside is loose it can be emptied out to reveal the washer.
Prise the washer off with a screwdriver and replace.
Reassemble the tap in reverse order.