Air eliminators work upstream of the meter to ensure no air is metered through the meter element. ... Standard air/vapor eliminators use a float to detect air in conjunction with an air check valve or differential valve and shuts off flow while air/vapor is vented.

What is the use of air eliminator?

An air eliminator is a segment of piping which attaches to a main pipe to trap and release air, fitted ahead of flow meters in a pipeline so that air will not be measured and a more accurate volumetric reading can therefore be taken.

How does a vapor eliminator work?

aIr and vaPor elIMInaTIon Liquid Controls mechanical air and vapor eliminators eliminate air (or vapor) instantly and continuously as it enters the meter system. Because air and vapor are lighter and less dense than liquid, they are naturally pushed up above the product flow.