| 摘要 |
PROBLEM TO BE SOLVED: To provide a sample port freely usable at any sampling point of an upstream area and a downstream area without stagnating a flow or generating liquid accumulation. SOLUTION: For this sample port (PORT), a screwing member 43 to which an elastic body 47 is forcibly fed is tightened and screwed to a columnar hole 42 formed at a main body part 41a so as to almost reach the communicating path 40 of a connection member 41. When the screwing member 43 is tightened, the elastic body 47 is expanded toward both ends in the axial direction of the screwing member 43. |
