Look up valve in Wiktionary, the free dictionary.

A valve is a device that regulates the flow of fluids.

Valve may also refer to:

Mechanical and electrical

• Brass instrument valve, for valves used in brass instruments
• Rotary valve, a valve using an internal rotor to select flow paths
• Piston valve, a valve using a piston to control fluid flow
• Piston valve (steam engine), a piston valve as used in steam engines
• Poppet valve, a valve consisting of a hole and a tapered plug on the end of a shaft, typically used in instruments, engines, etc.
• Vacuum tube, also called "thermionic valve", an electronic component
• Mercury-arc valve, a type of electrical rectifier tube

Biology

• Heart valve, valves in the heart that maintain the unidirectional flow of blood
• Vein valve, valves in veins and other fluid cords in body
• Lymphatic valve, valves in lymphatic vessels
• Valve (mollusc), the shell of a mollusc
• Valve (diatoms), the siliceous unit that makes up one half of a diatom cell
• Valve (botany), part produced by the splitting of a capsule or pod when ripe
• Valve, a paired clasping process on the genitalia of male moths

Companies

• Valve Corporation (also known as Valve Software or Valve), a video game developer and digital distribution company
• Valve Records, an Australian record label
• Valve Amplification Company, a U.S. high end audio electronics company

People

• Valve (given name), an Estonian feminine given name

Other uses

• Valve hall, a building which contains the valves of the static inverters of a high-voltage direct current plant
• The Valves, UK band