The 225mm 9 inch bailey drain test inflatable rubber bladder is the largest option available, specifically designed for large diameter pipes and heavy duty commercial drainage systems. This size is essential for industrial applications, major commercial installations and municipal drainage work where substantial pipe blocking capability is required. Built from tough rubber materials with a protective canvas case, this bladder handles the most demanding pipe isolation tasks. Supplied complete with a 1 4 inch brass tap and 1.8 metres 6 feet of tubing for convenient inflation control. With a maximum inflation pressure of 0.27 bar 4 psi, this variant is engineered to provide secure sealing in larger diameter pipes whilst maintaining safe operating parameters. Features and benefits bull 225mm 9 inch size for large diameter pipes bull maximum inflation pressure of 0.27 bar 4 psi bull robust rubber construction with canvas protective case bull includes 1 4 inch brass tap and 1.8 metres of tubing bull ideal for industrial and heavy duty commercial applications specifications tool type air bag