| 摘要 |
PROBLEM TO BE SOLVED: To provide a plug for fluid pressure inspection capable of regulating movement of a stopping ring, and efficiently stopping a pipe to be inspected.SOLUTION: A plug 10 fo fluid pressure inspection is coupled to an end of a pipe to be inspected, and a plug body 12 is formed into a cylindrical shape. A cylinder 16 is inserted into the plug body 12. On an outer peripheral face of the cylinder 16, a male screw 18 is threaded, and a butterfly nut 19 is screwed to the male screw 18. A seal member 23 is held to the outer periphery of the cylinder 16, and a diameter expansion mechanism 35 expands diameter of the cylinder 16 for bringing the cylinder 16 into contact with an inner peripheral face of the pipe to be inspected. On the diameter expansion mechanism 35, a stopping ring 30 for being loosely fitted to the outer periphery of the pipe to be inspected in a state that it is supported by cantilever, and regulating falling of the pipe to be inspected in an inclination state, is provided. The diameter expansion mechanism 35 further comprises a stopper 36 for holding the stopping ring 30 in the inclined state and stops the pipe to be inspected. |
