The Monument MON1379 is a 150mm Drain Testing Plug, specifically designed for larger drainage pipes commonly found in commercial buildings, industrial facilities, and main sewer connections. This substantial size makes it essential for contractors and drainage specialists working on larger-scale drainage systems where reliable pressure testing is critical. Capable of sealing against pressures of up to 1.62 bar (24 psi), this 150mm plug provides dependable performance for testing larger diameter pipes. The durable construction features removable top caps and rubber rings, whilst the user-friendly wing nut knob depresses the rubber cone to create an expanding watertight seal that securely fills the pipe diameter. Features and Benefits:150mm diameter perfect for large commercial and industrial drainage applicationsPressure rating of 1.62 bar / 24 psi suitable for testing larger pipe systemsSimple wing nut mechanism enables quick, tool-free installationFlexible rubber cone expa