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Arrow Pneumatics, Inc.Air Dryers |
Series D Desiccant Air DryersSeries D air dryers are in-line desiccant dryers. The compressed air flow path through the dryer assures desiccant packing and maximum utilization of the desiccant's adsorption qualities. The compressed air enters the dryer and is dispersed through a 70 micron polypropylene element for the removal of particles. The air is uniformly dispersed through the full desiccant bed by an intake tube protected by a 40 micron porous bronze element at the end. As the desiccant adsorbs moisture, a dramatic and highly visible color change from dark blue to light pink is evident. The color change works its way through the desiccant as the adsorptive qualities of the desiccant are diminished. Once the color change is visible through the exclusive sight dome, the full desiccant bed has reached its maximum drying capacity and must be either changed or regenerated. Dry air exits through the inside diameter of the intake tube and out the outlet port of the unit.ADSORPTION Adsorption means the attraction of a substance – the adsorbate – to, and its subsequent accumulation on, the surface of a solid material – the adsorbate – which is caused by physical forces of attraction. Adsorbants are substances which are permeated by a large number of very fine pores which give rise to a large internal surface area. This, in turn, determines the adsorption capacity of the adsorbant, since a large internal surface can accommodate more adsorbate. Other factors which influence the amount of adsorbate are: temperature, relative humidity and pressure. REGENERATION PROCESS Regeneration is accomplished by heating the desiccant to a temperature of 275°F in a drying oven. Regeneration is complete when the desiccant returns to its blue color. For extended life and protection of the desiccant and equipment being serviced, a F3 prefilter and a F5 coalescing filter should be used as a prefiltering system ahead of the dryer. Maximum flow capabilities range from 5 to 50 SCFM. Maximum pressure is 250 psig. Features are:
Series DFD Mini In-Line Desiccant Dryer is used at the point-of-use. This patented, disposable, mini in-line desiccant dryer removes all traces of water vapor, oil vapor and dirt. It is often used directly upstream of blow guns or spray guns as final protection for critical parts blow off and paint spraying. Install in either direction; it functions in both directions. A 40 micron, porous bronze element removes fine dirt particles, and oil removing media removes oil vapor, and desiccant beads adsorb water vapor. The see-through housing shows desiccant color change, which indicated that the dryer needs to be replaces. The housing is polycarbonate material which allows clear desiccant visibility. A transparent nylon guard shows color change when the dryer needs replacement. Maximum pressure is 125 psi. Maximum temperature is 130°F. |
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| Model | Pipe Size | Max. Flow SCFM* | Max. Flow SCF* | Desiccant Charge | Width (Inches) | Connection Centerline From Top | Height (Inches) | Weight Lbs. |
| D05-02** | 1/4" NPT | .5 to 5 | 830 | 6 oz. | 3-15/16" | 7/8" | 5" | 1.5 |
| D10-04 | 1/2" NPT | 5 to 15 | 2500 | 1 Qt. | 4-7/8" | 13/16" | 8-3/8" | 5 |
| D10-04XL | 1/2" NPT | 15 to 25 | 5000 | 2 Qt. | 4-7/8" | 13/16" | 12-3/16" | 7 |
| D25-06 | 3/4" NPT | 25 to 50 | 12500 | 6 oz. | 6-3/4" | 1-1/2" | 16-1/2" | 23 |
| DFD-10 | 15 max. | disposable | 3-3/4" | in-line | 1-11/16" | 2.8 oz. |
| Always install a F5 coalescing filter upstream of the D05, D10 & D25. For compressed air service only. Not to be used on life support systems or breathing air systems. Dry air for parts blowoff. Paint spray systems Air gauging equipment. Laboratory air. |