When reliable, high purity compressed air is essential, turn to HD series heat less compressed air dryers. HD series dryers have been engineered to deliver instrument quality, -100º F pressure dew point compressed air with unparalleled dependability.

At the heart of every HD, series dryer is a patented Interlock Logic 3-way inlet transfer valve. Tested to more than 1 million cycles, every movement of the valve is pneumatically interlocked, guaranteeing precise tower sequencing every time. The interlocked valve sequencing protects your compressed air system from premature loss of flow or pressure – each phase of the drying cycle must be completed before the next can begin. This ensures uninterrupted air flow at constant pressure for your downstream equipment.

Every HD series dryer sized for 200 – 3000 SCFM comes standard with the robust solid-state Touchpad Controller. The Touchpad Controller includes a cycle hold feature for preserving purge air when the compressor unloads. dryers come standard with the Cycle Saver dew point demand switching controller, which reduces unnecessary purging under

low flow and low moisture load conditions. The Cycle Saver and more advanced EMCON II energy saving controllers are also available as options on models

Why Hi-Tech Gas Plants

SAFETY
RELIABILITY
RETURN ON INVESTMENT
EASE OF OPERATION
INSTALLATION TIME

Economics
Cost saving in the range of 40-60% over liquid supply Systems and up-to 80% for Cryogenic Plant.

Highest Reliability
The VPSA system provides the highest reliability the control system allows for the production of oxygen at the specified flow & purity within a short time of demand using a simple push button. this on/off operating capability is not available from cryogenic plants.

Easy Partial Load Operation
The plant is automatically adjusted to the actual product flow requirement and operates in an energy-saving partial load mode.

Energy Efficiency
Lower energy consumption than cryogenic units.

Fully Automatic Operation
PLC-based control system controls the purity and the flow by automatically adjusting the cycle time of the VPSA system.

Remote control
A Profinet or LAN port is provided for the communication with complete Plant Directional Control System with optional Modem Board for Remote Control.

-40ºC pressure dew point
PermanentlylubricatedInletvalve
Valve position indicator
Activated alumina desiccant
Poweronswitch/LED
Control power fuse
Enamelexteriorfinish
ASME Code vessels with:
Lifting lugs
-Fill and drain ports
-Removable stainless steel desiccant screens
Purgeexhaustmufflers
Control Airfilter
PanelmountedTowerpressureGauges
PanelMountedvisualmoistureindicator
TowerStatusLEDs
Towerdrying/regeneratingLEDs
Dualpurgevalves
115/1/50-60 supply power
Solid state NEMA 4X control enclosure
Failure to switch alarm and contact
Cycle hold feature

220/1/50-60 supply power
Molecular sieve desiccant
Hazardousareaclassification
Mountedpre&afterFilterswithbypass piping
DigitalDewpointreadout
Energy saving controls
Model SCFM Desiccant Weight per Tower Dew Point Standard Pressure Optional Pressure
HD-200 200 48 -40 Deg  C 5 Bars 415 Bars
HD-375 375 92 -40 Deg  C 5 Bars 415 Bars
HD-650 650 166 -40 Deg  C 5 Bars 415 Bars
HD-1000 1000 254 -40 Deg  C 5 Bars 415 Bars
HD-1500 1500 395 -40 Deg  C 5 Bars 415 Bars
HD-2000 2000 507 -40 Deg  C 5 Bars 415 Bars
HD-3000 3000 772 -40 Deg  C 5 Bars 415 Bars

-Custom Built Models also available

-Higher capacities on request

Specifications are subject to change without prior notice