This 3" (75mm) PVC Inflatable Testing Bag is designed for use during testing or maintenance on drainage and sewer systems. It can be employed for water tests as an alternative to mechanical test plugs. The bag easily inflates using a standard air pump via a fitted Schrader valve, similar to vehicle tires. It features a 1/2” Through Tube with a 1/2” BSP male thread, allowing for an airtight seal in pipes and supporting a back pressure of 4"/100mm U Gauge as per British Standards. The inflatable design ensures trouble-free pipe sealing and comes with a 1.2m fitted hose and a hand pump.