| 摘要 |
A flow rate control device (10) is provided with a flow rate adjustment indication device (12) for operating the displacement of a needle valve (42) relative to a flow passage (40). The flow rate adjustment indication device (12) is provided with a housing (16), a rotation transmission member (110) which displaces the needle valve (42) by rotational operation, and an annularly shaped indication ring (114) which has a hole (172) through which the rotation transmission member (110) is inserted. The indication ring (114) has graduations (174) which indicate a change in the flow rate of liquid. The engagement of the engagement section (122) of the needle valve (42) displaces the indication ring (114) in the circumferential direction and changes the position of the graduations (174). |
