12 Volt Solenoid Air Valve

air valve
Control valve in an air system for setting volume and pressure.
A valve mounted on top of a tank car through which air pressure (or other gas pressure) is introduced to facilitate unloading.
A valve controlling the passage of air. Also a valve admitting air to a steam boiler, preventing the formation of a partial vacuum when the steam condenses.

solenoid
a coil of wire around an iron core; becomes a magnet when current passes through the coil
A solenoid is a three-dimensional coil wound into a tightly packed helix. In physics, the term solenoid refers to a loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it.
The solenoid defines the packing of DNA as a 30nm fiber of chromatin and results from the helical winding of at least five nucleosome strands.
A cylindrical coil of wire acting as a magnet when carrying electric current

volt
Volt is the name of a fictional character in the various Transformers universe.
The volt (symbol: V) is the SI derived unit of electromotive force, commonly called "voltage". It is also the unit for the related but slightly different quantity electric potential difference (also called "electrostatic potential difference").
A sudden quick jump or other movement to escape a thrust
a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt; equivalent to the potential difference across a resistance of 1 ohm when 1 ampere of current flows through it

12
A video game content rating system is a system used for the classification of video games into suitability-related groups. Most of these systems are associated with and/or sponsored by a government, and are sometimes part of the local motion picture rating system.
twelve: denoting a quantity consisting of 12 items or units
twelve: the cardinal number that is the sum of eleven and one