previous next

Pup′pet-valve.

A valve which moves vertically and is guided to and from its seat by a central vertical stem, coincident with the axis of the seat. In the example, the puppet-valves governing the supply and exhaust of steam to the cylinder are actuated by cams on a revolving shaft. The valve-stems are guided above in sockets in the top plates of the valve-chests, and by removing these plates the valves may be reached or removed.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.

An XML version of this text is available for download, with the additional restriction that you offer Perseus any modifications you make. Perseus provides credit for all accepted changes, storing new additions in a versioning system.

hide Places (automatically extracted)

View a map of the most frequently mentioned places in this document.

Download Pleiades ancient places geospacial dataset for this text.

hide Display Preferences
Greek Display:
Arabic Display:
View by Default:
Browse Bar: