A valve that automatically opens or closes in response to changes in pressure, temperature, or other physical conditions without external control.
From auto- (self) + valve (a device controlling flow). Engineering term from the late 19th century describing self-regulating valve mechanisms.
Autovalves are secretly running much of modern machinery—your car engine, your shower, your refrigerator all use them to automatically adjust to changing conditions without anyone touching a button.
Complete word intelligence in one call. Free tier — 50 lookups/day.