valve
VALV
/vælv/
A mechanical device that regulates, directs, or controls the flow of fluid by opening, closing, or obstructing passageways.
Implies an active or movable control element, ranging from simple hand-turned taps to complex automatic solenoids.
The story behind the word. Derived from Latin 'valva', meaning the leaf or folding leaf of a door. Early hydraulic engineers saw that mechanical flaps controlling water streams resembled swinging double doors.
Word relationships
- spigot: Spigot refers specifically to an outdoor tap or barrel faucet, whereas valve covers all flow control hardware.
- regulator: A regulator automatically adjusts output pressure, whereas a valve controls total flow opening.
Commonly confused with
- faucet: A faucet is the decorative end terminal outlet at a sink, whereas a valve is the internal mechanism controlling flow.
Word family
- valvular (adjective): Pertaining to or resembling a valve.
Collocations
- check valve
- shut-off valve
- ball valve
- relief valve
Example sentences
- "The plumber turned the main shut-off valve clockwise to isolate the burst water pipe." Emergency response
- "An electronic solenoid valve maintains precise flow control throughout the automated chemical reactor." Process control
Memory hook
VALVE keeps the fluid SAFE by controlling the gate. Controls fluid flow.
When not to use
Do not use for static open-ended spouts or simple stationary pipes.
Fun facts
- Human veins contain built-in microscopic anatomical valves that prevent blood from flowing backward down your legs against gravity.
Also appears in
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