Tag:valve=spool

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Public-images-osm logo.svg valve = spool
Description
A valve allowing to open and shut several ducts in a single movement. Also called directional control valves, a single moving part is regulating several ports and the possible configurations are set by design. Show/edit corresponding data item.
Group: pipelines
Used on these elements
may be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: approvedPage for proposal

A spool valve is most used in hydraulic or pneumatic circuits to change where the pressure goes. It can be used to invert a cylinder direction. The possible configurations are set by design and a single moving part can open or close several pipes in one movement.

You can complete their description in OSM with actuator=*, turn_to_close=* or handle=*. See examples