1. containing more alkali than normal. 2. having a pH factor of more than seven. 3. having a relatively low concentration of hydrogen ions. Advertisements
1. to coat (iron or steel) with a thin coating of zinc as an aid in resisting rust or corrosion. 2. to subject metal to the action of an electric current.
a device such as a bi-metal element, a fluid-filled bellows, or a thermostatic bulb, capable of sensing temperature variations.
the mixture of gases resulting from combustion and other reactions in a furnace, passing through the smoke flue, composed largely of nitrogen, carbon dioxide, carbon monoxide, water vapor, and often sulfur dioxide. Sometimes serving as a source from which CO2 and other compounds are recovered.
a device installed on a plumbing drain, waste and vent system to allow air to enter the drainage piping system, thereby relieving negative pressure in the system.
a pipe, or pipes, installed to provide a flow of air to, or from, a drainage system or to provide a circulation of air within such system to equalize pressures and ventilate the system, and to protect trap seals from siphonage and back pressure.
1. resistance to the relative motion of a liquid, or body, sliding, rolling or flowing over another with which it is in contact. 2. the resultant drag, or diminishment, of velocity of a fluid at the surface with which it is in contact.