Air Breather

Fluid contamination is the root cause of most hydraulic system failures. Controlling airborne
contamination is critical. The synergy of HDTech fluid filter elements and HDAB desiccant
breathers yields fluid clarification and a healthy hydraulic system.High humidity applications,

such as paper mills and steel mills, need a HDAB desiccant breather even more than a dry

environment. The HDAB series breather utilizes dual check valves that control air flow in and

out of the reservoir. Air does not enter or leave the reservoir unless the vacuum (0.3 psi, 0,02 bar)

or pressure (2.1 psi,0,15 bar) threshold is exceeded. The check valves prevent air exchange caused by
temperature fluctuation with safeguards to protect the integrity of the tank while preventing exhaled
air from coming in contact with the desiccant when exhausted (extending useful life). The HDAB-101
& HDAB-102 require and adaptor.
Assemblies include the element and permanent check valve cap. Upon service unscrew and keep
the check valve cap and replace the element with identical part number shown on the element.