Needle Valve

Science / Chemistry / Needle Valve: A valve which allows fine control over the rate of gas or liquid flowing through it. The valve contains a thin needle with a point that fits into a conical cup. When the valve is closed, the needle blocks an orifice in the bottom of the cup.

Semilunar Valve

Science / Biology / Semilunar Valve: A valve between each ventricle of the heart and the artery connected to that ventricle. MORE

Safety Valve

Entertainment / Football / Safety Valve: A receiver whose job it is to get open for a short pass in case all other receivers are covered. MORE

Relief Valve

Business / Construction / Relief Valve: A device designed to open if it detects excess temperature or pressure. MORE

Reed Valves

Technology / Motorcycle / Reed Valves: Reed valves are commonly used in high-performance versions of the two-stroke engine, where they control the fuel-air mixture admitted to the crankcase. As the piston rises in the cylinder the resultin MORE

Sidevalve Engine (SV)

Technology / Motorcycle / Sidevalve Engine (SV): Valves positioned in an engine beside a cylinder instead of in the cylinder head. The design was common in early engine designs, but has since fallen from use. Also known as an L-Head or Flathead engi MORE

Stop Valve

Business / Construction / Stop Valve: A device installed in a water supply line, usually near a fixture, that permits an individual to shut off the water supply to one fixture without interrupting service to the rest of the system. MORE