| 摘要 |
PROBLEM TO BE SOLVED: To provide a connected water supplying pipe facility, in which installation works can be conducted rapidly and easily and which is compacted, at a low cost. SOLUTION: The connected water supplying pipe facility has an upstream-side short pipe 7, a check valve unit 9 with a short pipe 9a, a cutoff valve unit 11 with the short pipe, a downstream-side short pipe 13, joints 8, 10, 12 connecting these short pipes 7, 9a, 13, and a drain valve 5 installed to the joint 8 and arranged to communicate with a water supply line formed in the short pipes 7, 9a. Grooves 14 for engagement are provided around the outer circumferences of the connecting end sections of the short pipes 7, 9a, and a retaining ring 21 composed of a pair of semicircular rings, a ring-shaped packing 22 set up on the inner circumference of the retaining ring 21, and a pair of retaining projecting edges 24 retained to the grooves 14 for engagement are formed at the left-right end sections of the inner circumference of the retaining ring 21 are fitted to the joint 8. An opening 4 in which the short pipes 7, 9a are opposed mutually is sealed by the ring-shaped packing 22, and the short pipes 7, 9a are connected by the joint 8 under the state that retaining projecting edges 24 are retained to the grooves 14 for engagement.
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