Pneumatic Products Heater-Less Desiccant Air Dryers from DL Thurrott

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Pneumatic Products Corporation's Compressed Air Purification Products

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Pneumatic Products Heater-less Desiccant Compressed Air Dryers

Pneumatic Products introduced the concept of pressure-swing desiccant drying technology to industry back in the 1940's. Heat-Les™ desiccant dryers are the most common design in use today to deliver stable pressure dew points to -100°F. Desiccant bed regeneration is accomplished using a side-stream percentage of clean, dry, internally supplied compressed air. This allows them to excel in areas where the ambient air may be compromised.

LHA Heat-Les™ Dryers (5-25 scfm)

The LHA Series Heatless Desiccant Air Dryer will protect your process and pneumatically operated equipment from the potentially harmful effects of moisture that is present in typical compressed air systems. LHA Series dryers will produce pressure dew points of -40°F and -100°F thereby protecting air systems that are exposed to below freezing temperatures.

Desiccant towers designed to ensure consistent outlet dew points, minimize purge air usage, and extend desiccant life.
Furnished in a sturdy cabinet for easy wall mounting
Prefilter and Afterfilter is included (shipped loose)

PRODUCT LITERATURE: LHA Heat-Les™ Series Brochure

Legendary DHA Series and CDA Series Heat-Les™ Dryers (60-1,600 scfm)

Critical applications and hostile environments challenge common industrial dryer designs. DHA Series (-40°F) and CDA Series (-100°F) dryers deliver unrivaled performance and reliability through standard and customized orientations. Pre-configured dryer packages range from a basic fixed-cycle unit to a high pressure, corrosion-resistant model. Every unit we build incorporates our AMLOC® energy management system to assure long component life cycles and maximum energy savings

DHA/CDA-EM1 Configuration

The DHA/CDA-EM1 dryer has been designed with the following upgraded features that are commonly requested in demanding applications:
- Legendary Select Series or Century Series control valves feature stainless steel internal parts designed specifically for desiccant dryer service and tested to 1,000,000 cycles, bubble-tight.
- Welded manifold construction to eliminate leaks.
- ASME coded vessels-full penetration welds (with backing rings), 1/16" corrosion allowance and two-part epoxy finish.
- Modular Electronic Controller (MEC) with AMLOC® energy management.
- Aquadex ® moisture indicator.
- Pre-mounted prefilter and afterfilter (other mounting options available: duplex, block and bypass valves).
- Heavy-duty low-noise exhaust muffler
- High Humidity Alarm

DHA/CDA-PM Configuration

The DHA/CDA-PM dryer is further upgraded with our Advanced Diagnostic Controller (ADC) with AMLOC® energy management, panel mounted Aquadex and inlet/outlet pressure gauges. Additional modifications made available to this model include:
- Stainless steel or copper instrument air tubing
- SS Aquadex moisture indicator
- SS relief valves
- SS inlet/outlet pressure gauges

DHA/CDA-PMX Configuration

The DHA/CDA-PMX dryer is our top-of-the-line configuration designed for the most demanding applications. It features the following standard components:
- Legendary Select Series or Century Series control valves feature stainless steel internal parts designed specifically for desiccant dryer service and tested to 1,000,000 cycles, bubble-tight.
- Flanged manifold construction with removable stainless steel inlet and outlet diffuser screens.
- ASME coded vessels-full penetration welds (no backing ring), 1/8" corrosion allowance, two-part epoxy finish with shot-blast preparation.
- Modular Electronic Controller (MEC) with AMLOC energy management (upgradeable to ADC or pneumatic controls).
- Stainless steel air tubing and instrument package.
- Pre-mounted PPC prefilter and afterfilter with stainless steel housings.
- Heavy-duty low-noise muffler.
- SS Aquadex moisture indicator.

PRODUCT LITERATURE: DHA Heat-Les™ Series Brochure

HA Series and HAC Series Heat-Les™ Dryers (55-3,250 scfm)

Durability and economy are requirements for most common industrial heatless drying applications. HA Series (-40°F) and HAC Series (-100°F) dryers deliver consistent performance and reliability through standard packages. Standard models operate on a fixed cycle control system. Upgraded MEC Controller provides load based energy savings. Standard features include:

Non-Lubricated switching valves with one moving part
NEMA 4 rated electrics
ASME and CRN registered pressure vessels
Pre-mounted prefilter and afterfilter (other mounting options available: duplex, block and bypass valves).

PRODUCT LITERATURE: HA Heat-Les™ Series Brochure

Legendary CHA Series Heat-Les™ Dryers (1,800-12,100 scfm)

CHA Series Heat-Les™ desiccant compressed air dryer is the most reliable, energy efficient, large-flow heatless dryer available. Standard designs are offered for flows ranging from 1,800 to 12,100 scfm, pressures from 60 to 150 psig, and pressure dew points of -40°F to -100°F. Other sizes and pressures are available upon request. These dryers can be used in continuous or intermittent service, downstream of oil lubricated or oil-free compressors, and are compatible with corrosive, toxic or explosive environments. Every unit we build incorporates our AMLOC® energy management system to assure long component life cycles and maximum energy savings.

Simple design with few moving parts for economical first cost and dependable operation.
Legendary Century Series control valves feature stainless steel internal parts designed specifically for desiccant dryer service and tested to 1,000,000 cycles, bubble-tight.
Patented AMLOC® Energy Management System for maximum energy savings.
Advanced Dryer Control System (ADC) includes a functioning schematic for easy reference to system operation.
Down-flow drying extends desiccant life 5 to 7 years and prevents desiccant attrition during upset (fluidization) conditions.

PRODUCT LITERATURE: CHA Heat-Les™ Series Brochure