Before
you find water in your compressed air lines, or spooled
products due to contamination from your air lines . . .
contact B & H.
We can
test the desiccant in any regenerative dryer to make sure
it has the capacity to do its job.
When
adsorbent desiccant wears out, breakthrough is sudden. A
-40 dew point can turn into a saturated air stream in just
a few days.
Imagine
a bucket that is collecting water. When it fills - it
spills. 
This is a lot like a regenerative air dryer vessel.
B & H has many types of adsorbent desiccant available
for immediate shipment for all major brands of compressed
air dryers. Activated Alumina, Silica Gel, Molecular Sieve
and many others.
Below is a diagram illustrating "breakthrough"
and what happens when your adsorbent desiccant wears out.
Van Air Information
Adsorbent
Desiccant
Regenerative
Compressed Air Dryers