Overview
Operational Features
Bi-Directional Air Flow - Air entering is cleaned and dried. Expelled air partially regenerates the silica gel and "back flushes" the particulate filter to prolong the life of the breather.
Durable Construction - Air Sentry® is manufactured from rugged ABS plastic and impact-modified Acrylic.
Water Vapor Adsorbent - The Silica Gel used in Air Sentry® breathers is chemically inert, non-corrosive, and conforms to all regulated toxicity standards in the U.S. and other countries. Microscopic pores allow the silica gel to adsorb up to 40% of its own weight.
Color Indicator - When maximum adsorption is reached, the silica gel turns from gold to dark green to indicate that replacement of the breather is required.
Activated Carbon - As air is expelled from the tank, it passes through activated carbon which removes oil vapors, fumes and odors.
Safety Sealed - Seals keep moisture from entering the units until they are placed in service. They are easily removed without tools or sharp instruments.
Contamination Control Breathers:
The First Line of Defense
Air Sentry® Breathers should be an integral part of
any proactive maintenance and reliability program.
Designed to replace the breather cap or air filter on
gear boxes, hydraulic fluid reservoirs, bulk storage
tanks, oil drums, oil-filled transformers, and other
fluid reservoirs, Air Sentry® breathers adsorb water
from the air before it enters your fluid system and
remove particulate contaminants as small as 2
microns. Better yet, the silica gel changes color when
it is fully depleted, turning from a gold color to dark
green. This makes it simple to identify the condition
of a breather and quickly replace the breather,
maintaining the cleanliness of the fluid reservoir.
One research group found that greater than 75%
of all machine wear related failures were due to
particulate contaminants. Frequently the greatest
cost of equipment failure is not the component
replacement cost, but the labor production downtime.
Most particles start off as dirt (hard silica)
that becomes airborne, finds its way into lubricant
and fuel reservoirs, and is later transported to
bearings, bushings, seals, valves, and other machine
components. There they become key ingredients
in abrasion, erosion, and fatigue failures. The
contaminants also cause lubricant degradation,
shortening the life of the lubricant and
decreasing its ability to lubricate.
When it comes to bearings, contamination is
especially devastating. Bearing manufacturers
claim that free of contaminants, a bearing could
have an infinite life. Silt particles reduce oil’s
lubricity and can produce localized pressures
over several hundred thousand pounds per square
inch, resulting in spalling, denting, abrasive wear,
and fatigue failures. Contamination is the second
leading cause of bearing failure, right behind
improper lubrication. Bearings aren’t the only
component at risk. With typical machine clearances
measured in thousandths of an inch, it doesn’t take
much contamination to destroy machine components
such as bushings or hydraulic valves. With
lubricant films typically ranging from 0.1 to 50
microns, it doesn’t take a very large particle to
disrupt that film. In fact, studies have shown
that particles of 10 microns or smaller cause
the greatest amount of wear.
Particulate contaminants aren’t the only culprit.
Water is just as deadly. Its presence in lubricants
and hydraulic fluids creates a host of problems
including, rust, lubricant additive depletion,
viscosity changes, and sludge formation as a
byproduct of oxidation. The result of this is
excessive wear and component failure.
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