Liquid-controls Mechanical Eliminators Manual de usuario descargar pdf (Pagina 5)

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Liquid Controls mechanical air and vapor eliminators

remove air and vapor from metering systems. Removing

the air and vapor from a metering system increases the

accuracy of the meter by allowing only liquid to pass

through the meter for measurement.

At installation, LC mechanical air and vapor eliminators

are piped to a storage tank to provide a pathway and a

receptacle where the evacuated air and vapor can be

deposited. After the air (or vapor) has left the metering

system, mechanical air and vapor eliminators seal off the

pathway to prevent liquid from entering the storage tank.

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

Liquid Controls mechanical air and vapor eliminators are

typically bolted, in an upright position, onto the top of a

strainer on the inlet side of the meter. Before operation,

air and vapor eliminators must be piped to a storage

tank and, on most meter systems, to an air check (or

differential) valve. Installation and maintenance must be

done by a qualied technician. See page 16 for Field

Piping installation.

Vent Ports Open

Vent Ports Sealed

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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 ow. Air and vapor

eliminators are set above the product ow so that air in

the system is pushed up into the the cavity inside the

air eliminator housing, out the valve plate vent ports,

through the piping, and into a storage tank (see middle

left gure). As air is evacuated from the system, the

liquid level inside the air eliminator cavity is allowed

to rise and push the oat up. As the oat moves up, it

presses the reed strips against the valve plate sealing

the vent ports and preventing product from passing

through the piping and into the strorage tank. If more

air enters the system, it will rise to the top of the air

eliminator cavity. The air will accumulate there and push

the liquid level, and the oat, lower. As the oat falls, the

reed strips pull away from the vent ports, and air can be

vented before it enters the system.

In this manual, the term “,” refers to any type of

receptacle meant to hold air or vapor expelled from the meter

system by an air eliminator. And because mechanical air and

vapor eliminators remove both air and vapor, depending on the

application, the terms “” and “” are interchangeable

throughout this manual.

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Liquid-controls Mechanical Eliminators Manual de usuario Pagina 5

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