Recent content by GarethT

Got any tips on how to open it up? I'm not sure if it is screw or pull, and didn't want to break it. Gareth

The top of my bathroom waste pipe has an air admittance valve (Durgo), but in the past few days the toilet and shower have started 'gurgling' when the bath is emptied. If I give the valve a helping hand with my finger then air gets in and the bath empties fine so I'm guessing that the Durgo is...