| 摘要 |
PROBLEM TO BE SOLVED: To provide a check valve having improved open/close response performance, and provide a hydraulic-pressure type tensioner with the check valve.SOLUTION: A check valve 2 with a supply passage of fluid f and a valve body preventing backflow of the fluid f by closing the supply passage, includes a first supply passage 11 and a second supply passage 12 which are independently formed, and a first valve body 21 and a second valve body 22 which correspond to the first supply passage 11 and the second supply passage 12, respectively, and is formed such that valve opening pressures of the first valve body 21 and the second valve body 22 are different. |
