Drainage System Test Plug

A compact, rubber-based inflatable plug measuring 12 cm × 7 cm × 7 cm (4.72 × 2.76 × 2.76 inches), supplied with a 150 cm (59.06 inch) inflation hose. Intended for functional isolation in domestic and light commercial drainage infrastructure, it supports essential tasks including CCTV survey prep, joint integrity verification, and post-installation water testing. Its design prioritises ease of insertion into standard access points and predictable inflation behaviour using widely available low-pressure air sources. The plug remains stable under typical gravity-flow conditions and offers immediate visual confirmation of seal effectiveness through controlled water level retention — aligning with UK industry practices for drain commissioning and certification.