PVC Sealing Inflatable Test Air Bag 6" (150mm) Drain Pipe Bung Plug Plumbing

6" (150mm) PVC Drain Bag. Used when testing or during maintenance on drainage / sewer work. Easily inflates using standard air pump with fitted schrader valve (as vehicle tyres etc..). To create an air tight seal in pipes for a back pressure of 4"/100mm U Gauge