FS-Curtis DHB Series
FS-Curtis DHB Series compressed air dryers — refrigerated dryer configurations sized for shop and light industrial compressed air systems requiring 35 to 50 degree F pressure dew point output. DHB Series uses refrigerant-based cooling to condense moisture from compressed air before it reaches downstream tools and processes. Suited for general shop tool air, fabrication, and most non-critical industrial applications. Alamo Equipment is an authorized FS-Curtis dealer with sizing consultation and parts availability nationwide.
FS-Curtis DHB Series FAQs
DHB is a line of blower purge desiccant air dryers in large flow capacities, with models spanning roughly the 1,050 to 2,600 range and above. These are industrial-scale dryers rather than shop-sized equipment.
Instead of using dried compressed air to regenerate the offline desiccant tower, a blower purge dryer uses an external blower and heater to drive moisture off the desiccant. That eliminates most of the compressed air purge loss, which is a significant operating saving at large flow rates.
Heatless designs use the most compressed air for regeneration and have the lowest capital cost. Heated purge reduces that consumption. Blower purge reduces it further by using ambient air and a blower instead of process air. Capital cost rises in the same order as efficiency.
Generally at higher flow rates, where the compressed air a heatless dryer would consume for regeneration represents a large enough energy cost to justify the additional equipment. The crossover depends on flow, run hours, and electricity cost. Alamo can help work through the comparison.
In addition to the compressed air connection, these units need electrical supply for the blower and heater. Confirm the electrical requirement for the specific model against available service — the heater load in particular can be substantial.
Desiccant dryers of this class are specified to reach dew points well below what refrigerated drying achieves. The exact rated dew point is model and configuration specific and should be confirmed against your application requirement.
Desiccant media replacement on schedule, valve and control maintenance, blower and heater service, and filter changes upstream and downstream. These are maintained assets, not install-and-forget equipment. Plan the maintenance program at the time of purchase.
Equipment in this class ships by freight and generally requires rigging to set in place, plus mechanical and electrical connection by qualified trades. Site preparation, clearances, and utility connections should be confirmed well before delivery.