| 摘要 |
A limiting device for use with a single-handle valve for mixing hot and cold water and for controlling the maximum flow-volume or the maximum temperature of flow through the valve. The device limits the range of motion of the control stem of a single-handle mixing valve. The device comprises a guide template and an insert. The guide template generally defines the range of motion of the control stem, the control stem being positioned within a camming aperture of the guide template, the camming aperture having the same general shape as the range of motion of the control stem. The guide template includes a guide-cover key that prevents any rotary movement of the guide template relative to the single-handle mixing valve, and a guide-insert key. The insert further limits the range of motion of the control stem during engagement with the guide template. The insert includes an insert-limiting edge that further reduces the size of the camming aperture during engagement of the insert with the guide template. The insert also includes an insert-cam key. The insert-cam key and the guide-insert key cooperatively retain the insert relative to the guide template during engagement of the insert and the guide template. The insert can be replaced with either an insert having a similar control edge or with an insert having a different control edge to control the maximum flow-volume and temperature through the valve.
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