Atmospheric-Automatic Inlet Valve (AIS)

Technology / Motorcycle / Atmospheric-Automatic Inlet Valve (AIS): System used on early engines in which the inlet valve is held shut by a weak spring and opens by atmospheric pressure when the falling piston creates a vacuum in the cylinder.

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

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

Zone Valve

Business / Construction / Zone Valve: A device, usually placed near the heater or cooler, which controls the flow of water or steam to parts of the building: it is controlled by a zone thermostat. MORE