| 摘要 |
PURPOSE: To improve an opening and closing characteristic by preventing falling down and deviation of a valve spring with simple constitution, and smoothing a slide of a valve body. CONSTITUTION: In a valve 21, a valve body 23 is slidably arranged in the middle of a passage of a valve casing 11, and pressing force of a valve spring 24 acts on one surface of the valve body 23, and the valve is actuated by a difference from action force to act on the other surface of the valve body 23. Positioning recessed parts 12a and 23a to position an end part of the valve spring 24 are arranged in at least one of the valve casing 11 and the valve body 23. |
