| 摘要 |
A positive displacement flow meter comprising a housing, said housing having an inlet and an outlet, a first vane rotatably mounted on a first shaft and a second vane rotatably mounted on a second shaft, and meshing gear means carried by each shaft. Resilient means urge the vanes to a closed position whereby fluid communication is closed between the inlet and the outlet. Indicator means are carried by one of the shafts to provide a visual indication of the fluid flow rate through the flow meter. |
