Solenoid Pinch Valve

pinch valve
A pinch valve is a full bore or fully ported type of control valve which uses a pinching effect to obstruct fluid flow. There are a few types of pinch valves based upon application.
A device used to pinch and unpinch flexible tubing for the purpose of controlling flow.

solenoid
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
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.