previous next

Fold′ing-valve.

A flexible flap which lies upon the perforated plate forming its seat, and rolls or unrolls thereupon to open or close the passage-way. The band is connected to an arm on a shaft which passes through a stuffingbox to the outside of the case.

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: