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PVC-U Push fit drainage system Conforms to BS EN 1401-1:2009 Anti flood non-return valves are an effective back flow prevention device used to stop reverse flow of foul and waste water from the drainage system
PVC-U Push fit drainage system Conforms to BS EN 1401-1:2009 Anti flood non-return valves are an effective back flow prevention device used to stop reverse flow of foul and waste water from the drainage system