| 摘要 |
A fluid control valve assembly comprising a bladder and positioning means to assist in positioning the bladder in a pipe or duct, the bladder being adapted to substantially to fill a cross-sectional area of the pipe or duct thereby to restrict flow of fluid through the pipe or duct in use and wherein the positioning means comprises a body having a bladder attachment formation for attachment to the bladder and a tool attachment formation for attachment to a positioning tool for positioning the bladder in the pipe or duct in use. |
