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Public-images-osm logo.svg actuator = pneumatic_cylinder
Gate Valve with Handwheel (L) and with Linear Pneumatic Actuator (R).jpg
A pneumatic cylinder changes the state of a machine or device with the help of compressed air Show/edit corresponding data item.
Group: mechanics
Used on these elements
may be used on nodesmay be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
Useful combination
Status: approvedPage for proposal

A pneumatic cylinder is a linear mechanical actuator designed to deliver unidirectional force to a moving part of a system. It runs with a gazeous fluid like dry air instead of hydraulic cylinders (actuator=hydraulic_cylinder) which make use of liquid fluids like oil.

This key was initially proposed to describe pipeline=valve but it is suitable for movable road bollards, automatic doors or any moving system also.