| 摘要 |
A valve for the proportioning of fluid flow between orifices (14,15) consists of a first cylinder (16) provided with a tapering circumferential groove (19) in its periphery, and a pair of cylinders (17,18) contacting the first cylinder respectively in the path between those orifices and a single orifice (13). The pair of cylinders (17,18) have tapered circumferential grooves (20,21) arranged so that rotation of the cylinders causes opening of one path and closing of the other. |
