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absolute pressure Pressure reading taking into account the ambient pressure. The absolute pressure at sea level is 14.7 psi while the gauge pressure at sea level is 0 psi. The absolute vacuum pressure reads perfect vacuum as 0" Hg while no vacuum would be 29.92" Hg. Vacuum read on a gauge is just the opposite...0" Hg = no vacuum and 29.92" Hg = perfect vacuum. (absolute pressure is signified by an "a" after the unit of measure - i.e. 75 psia)
Actual Cubic Feet Per Minute (ACFM) Volume of air taking into account the ambient pressure and temperature. The ACFM value will increase as the vacuum level - in gauge reading - increases. The deeper the vacuum, the more space the volume of air takes up.
Bernoulli's principle as the speed of a moving fluid increases, the pressure within the fluid decreases. The fluid can be a liquid or a gas. For the principle to apply, the following is assumed:
 - fluid or gas flows smoothly
 - fluid or gas flows without any swirls or "eddies"
 - fluid or gas flows everywhere throughout the pipe
 - fluid or gas has the same density everywhere

As a fluid or gas flows through a pipe that narrows or widens, the velocity and pressure will vary. The fluid or gas will flow more quickly through the narrow sections, but the pressure will decrease.
Charles Law volume of gas increases or decreases as the temperature increases or decreases - providing the amount of gas and pressure stay fixed. volume divided by temperature = a constant (or a linear relationship).  

V1 / T1 = V2 / T2

(note: absolute zero is found via Charles law. That is the temperature at which a volume of gas gets cold enough to be reduced to a theoretical volume of zero. Absolute zero is   -460° F or - 273° C)
Dalton's law the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas
   
   
flushing fluid  
galvanize To coat with Zinc. Medical air and instrument air receivers are required to b corrosion resistant. One way to achieve this is to dip the receiver in zinc prior to fabricating the system.
   
gauge pressure Pressure reading not taking into account the ambient pressure. The gauge pressure at sea level is 0 psi while the absolute pressure is 14.7 psi. The gauge vacuum pressure reads perfect vacuum as 29.92" Hg while no vacuum would be 0" Hg. Vacuum read on an absolute scale is just the opposite...0" Hg = perfect vacuum and 29.92" Hg = no vacuum. (gauge pressure is signified by a "g" after the unit of measure - i.e. 75 psig)
Inlet Cubic Feet Per Minute (ICFM) measurement of a volume of air taking into consideration the ambient temperature and pressure. Typically this is used to refer to the volume of air a medical air compressor system can produce. The ICFM value will change as the temperature and pressure of the ambient conditions change.
inline filter  
latent heat Heat given off or absorbed in a process, as fusion or vaporization, other than through a change in temperature. (water = 1,050 BTU per pound....BTU = the heat required to raise the temperature of one pound of water one degree Fahrenheit)
   
   
   
overhaul kit  
partial vapor pressure vapor pressure = the pressure of a vapor in equilibrium with its non-vapor phase. (e.g. when water evaporates, the vapor pressure exerted by the evaporating water). The partial vapor pressure would be the pressure of (1) individual gas in a mixture. The sum of the partial pressures = the total vapor pressure of the mixture (this is Dalton's law)
Standard Cubic Feet Per Minute (SCFM) Volume of air based on standard atmospheric conditions (68° F, sea level or 14.7 psia, and 36% relative humidity) SCFM allows one to use a "standard" volume of air as a comparison for two or more vacuum pumps or air compressors.
Torr