| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for hermetically connecting a connection part between a check valve and other piping member in a piping structure provided with the check valve.SOLUTION: In a piping structure provided with a check valve, the check valve 1 which is arranged in a tube body T forming the piping structure and is constituted from a material having elasticity is provided such that a main body part 1a, an opening part 1b, a closure part 1c and the check valve 1 having elasticity are integrated, and a check valve hermetically closing pard 1d having planes P opposite to each other which are continuously disposed along a periphery on the check valve 1, an attachment part 3a having a rib part of a piping member provided on the piping structure between the planes P opposite to each other is hermetically abutted and sandwiched and, thereby, channels other than the closure part 1c from the opening part 1b of the check valve 1 are hermetically divided into an upstream side and a downstream side of the check valve 1 is provided. |
