After the installation of your Pop Down waste, if you find that it does not hold water when closed there may be an installation issue. A simple test can be conducted to see if water is passing around the waste (in the case of an installation fault), or through the waste, which would be a product fault.
To test, close your Pop Down waste and partially fill your basin with water. If the water empties from the basin but does not empty from the well above the Pop Down mechanism, it would suggest an installation fault. In this case you would need to call the installing plumber.
If the water empties from the basin and also empties from the well above the Pop Down mechanism, it would suggest a product fault. In this case, contact us and we will send a replacement mechanism.