| 摘要 |
PROBLEM TO BE SOLVED: To provide a needle valve which unfailingly shields flow of a liquid when a passage is closed even if holes are distributed.SOLUTION: A needle valve 6 opens and closes a passage of an injector 1 and includes: a body part 6e; and a seal part 6d which is connected with the body part 6e, contacts with a second contact surface 23a of the injector 1 when the passage is closed, and separates from the second contact surface 23a when the passage is opened. Holes 6c are dispersed in the body part 6e. The porosity of the seal part 6d is smaller than the porosity of the body part 6e. |
