| 摘要 |
The adjustable choke for compressed air and other fluids is made up of two relatively turning discs of which one has a calibrated channel in it running round the axis of the discs. By relative turning of the discs the fluid is caused to flow along different lengths of the channel in keeping with the desired choking action. The housing has a bell cover, in which one of the discs is keyed and sealed at the discs outer edge with the spring between it and the top of the cover in a chamber. The other disc is mounted on a base of the housing. There is a central pillar in the hosuing that joins the cover to the base and contains a duct by which is supplied into the chamber through a hole in the one disc into the channel, through the other disc and then out through the base of the housing.
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