Patent ID: 9664302
Date: 2017-05-30
CPC Classifications: F16K,G05D

Claim:
1. A flow rate control device, which by displacement of a needle valve, is configured to control a flow rate of a fluid that flows between a couple of a first port and a second port, comprising: a first body including the first port, and which includes a joint mechanism to which a tube is connected that supplies or discharges the fluid; a second body connected to the first body, and which includes the second port through which the fluid is discharged or supplied; a handle connected to the needle valve, and which is configured to adjust the flow rate of the fluid by causing axial displacement of the needle valve under a rotary action of the handle; a cover having an insertion opening into which the handle may be inserted such that the cover surrounds the handle in a removable manner; a release member provided on the cover and partially separated from the cover by a groove; a projection is disposed on an inner surface of the release member, the projection being able to engage with the handle to thereby attach the cover to the handle, and wherein, due to the groove, the release member is able to be flexed outwardly with respect to the cover, about a support region for the release member on the cover, such that engagement of the projection with the handle is released, and wherein the support region is located closer to the opening of the cover than is the projection.