inch of water column

inch of water column
(in WC)
   a traditional unit of pressure, used in plumbing to describe both water and gas pressures. The conventional equivalent of one inch of water is 249.0889 pascals, which is 2.490 889 millibars, about 0.036 127 pounds per square inch (psi) or about 0.073 556 inches (1.868 32 millimeters) of mercury.

Dictionary of units of measurement. 2015.

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  • inch of water gauge — (in wg or wg)    another common name for the inch of water column. The word gauge (or gage ) after a pressure reading indicates that the pressure stated is actually the difference between the absolute, or total, pressure and the air pressure at… …   Dictionary of units of measurement

  • Inch of water — Inch Inch, n. [OE. inche, unche, AS. ynce, L. uncia the twelfth part, inch, ounce. See {Ounce} a weight.] [1913 Webster] 1. A measure of length, the twelfth part of a foot, commonly subdivided into halves, quarters, eights, sixteenths, etc., as… …   The Collaborative International Dictionary of English

  • water column — (WC)    a notation seen in pressure measurements. See inch of water, centimeter of water, or millimeter of water …   Dictionary of units of measurement

  • Inch of water — Inches of water, inAq, Aq or inH20 is a non SI unit for pressure. It is used for measuring small pressure differences across an orifice, or in a pipeline or shaft. [ [http://www.npl.co.uk/pressure/faqs/ohnoinches.html Inches of something] ] It is …   Wikipedia

  • Inch — Inch, n. [OE. inche, unche, AS. ynce, L. uncia the twelfth part, inch, ounce. See {Ounce} a weight.] [1913 Webster] 1. A measure of length, the twelfth part of a foot, commonly subdivided into halves, quarters, eights, sixteenths, etc., as among… …   The Collaborative International Dictionary of English

  • Inch of candle — Inch Inch, n. [OE. inche, unche, AS. ynce, L. uncia the twelfth part, inch, ounce. See {Ounce} a weight.] [1913 Webster] 1. A measure of length, the twelfth part of a foot, commonly subdivided into halves, quarters, eights, sixteenths, etc., as… …   The Collaborative International Dictionary of English

  • inch — (in or )    1. a traditional unit of distance equal to 1/12 foot or exactly 2.54 centimeters. The Old English word ynce is derived from the Latin uncia, meaning a 1/12 part; thus inch and ounce actually have the same root. The inch was originally …   Dictionary of units of measurement

  • Miner's inch — Inch Inch, n. [OE. inche, unche, AS. ynce, L. uncia the twelfth part, inch, ounce. See {Ounce} a weight.] [1913 Webster] 1. A measure of length, the twelfth part of a foot, commonly subdivided into halves, quarters, eights, sixteenths, etc., as… …   The Collaborative International Dictionary of English

  • inch of mercury — (in Hg)    a traditional unit of atmospheric pressure. In the United States, atmospheric pressure is customarily expressed as the height of a column of mercury exerting the same pressure as the atmosphere. When a traditional mercury barometer is… …   Dictionary of units of measurement

  • Water line — Line Line, n. [OE. line, AS. l[=i]ne cable, hawser, prob. from L. linea a linen thread, string, line, fr. linum flax, thread, linen, cable; but the English word was influenced by F. ligne line, from the same L. word linea. See {Linen}.] 1. A… …   The Collaborative International Dictionary of English

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