Hi All,
When I flush the toilet, it is slow draining.
If I remove the Air admittance valve (so that the top of the soil stack is open), the flush is normal.
Is this just a failure of the Air admittance valve?
If replacing, would any 110mm Air admittance valve be suitable? or should I replace like for like?
Thanks in advance.
When I flush the toilet, it is slow draining.
If I remove the Air admittance valve (so that the top of the soil stack is open), the flush is normal.
Is this just a failure of the Air admittance valve?
If replacing, would any 110mm Air admittance valve be suitable? or should I replace like for like?
Thanks in advance.