PURPOSE: To provide a connecting device for bent pipe equipped with a draft path with which execution of piping works can be done simply and certainly and repair works thereafter can be performed simply.
CONSTITUTION: In connecting an upstream double-layer pipe D1 to a downstream double-layer pipe D2 where each inner pipe 1 of the pipes D1, D2 serving as a drainage passage is connected with an outer pipe 2 with a space between them 1, a serving as a draft passage, a lower end of the outer pipe 2 of the upstream double-layer pipe D1 is connected to an upper end of the inner pipe 1 of the downstream double-layer pipe D2 through a bent pipe 3, while the outer pipes 2, 2 of the upstream and downstream double-layer pipes D1,D2 are connected to each other through a draft pipe 4. Thereby execution of piping works can be done simply and certainly, and repair works thereafter be conducted simply.
| JP3510276 | UNIVERSAL SADDLE TEE FOR PIPE |
KOYAMA YOSHIRO
NISHINO HIROSHI
SASAKI SADAO
