PVC Cladding sell a 21.5mm solvent weld overflow system in PVC-U with a comprehensive range of fittings.
Our overflow pipes are designed to prevent overflow and flooding from a liquid container such as a toilet tank by fitting to it. It should be fitted above your maximum liquid level so as a result, if the liquid reaches above that desired level, it will enter the pipe and be channelled somewhere else outside of the house, therefore not being allowed to rise any higher.
Joints should be solvent welded using SC250 Solvent Cement, manufactured to BS 6209.