EHD Series
Desiccant Compressed Air Dryers
Externally Heated Regenerative Compressed Air Dryers are ideal for general manufacturing and process industry applications. In External Heater models, purge air is heated outside the desiccant bed, then passed over the bed to regenerate it.
Next Air & Gas externally heated regenerative dryers provide a low -40º F/C pressure dew point for superior air line moisture protection, while offering the efficiency of convection-heated desiccant regeneration.
Should you need guidance determining which type of dryer works best for your operation, our on-staff experts are happy to do an analysis and make recommendations. You can request assistance here.
- UL , CUL, electrical certifications
- ASME, CRN Code Welded Pressure Vessel certification
- Stainless Steel Angle Body Valves / Butterfly valves
- Optimal tower size for low velocities, high contact time and minimal desiccant fluidization
- Tower Pressure relief Valves
- Purge adjustment valve to control purge flow
- Purge Flow indicator indicates rate
- Horizontal Purge Exhaust mufflers for quiet operation
- Tower Pressure Gauges
- Stainless steel desiccant strainers, supports air diffusers to prevent channeling.
- Counter-current re-pressurization
- Nema 12-4 electrical enclosure
- Field adjustable drying cycle time (6,10,15 min)
- Separate drain and fill port
- Separate safety pressure relief valve for each tank
- Tower pressure gauges
- Fail-safe design in case of power failure
- Common alarm contact
Standard operating Voltage
460V / 3 PH / 60 HZ – Standard
575V / 3 PH / 60 HZ – Optional
400-380V / 3 PH / 50 HZ – Optional
Pre & Post Filtration
Post-filtration grade μm 1.0
Pre-filtration grade μm 0.01
Pressure Vessel Certification ASME,CRN ( BPD-125-2,500) All Provinces
Min/Max inlet air temperature ° 60/120
Control Panel Certification UL, CUL,
CSA- Optional
Min/Max operating pressure psig 80/125
Average Purge Air 7%
Standard outlet pressure Dew Point ° F -40° F
Model EHD Series Dryers
ALTERNATE VOLTAGES+
ALT-V-5 575 Volts / 3 Phase / 60 Hz
ALT-V-6 400-380 Volts / 3 Phase / 50 Hz
CONSTRUCTION
TAG STANDARD STAINLESS STEEL ID TAG
NYM NO YELLOW METAL
SP-DIM SPECIAL – DIMENSION
SP-FLT SPECIAL FILTER CONFIGURATION
CSA CANADIAN STANDARDS ASSOCIATION
CRN CANADIAN REGISTRATION NUMBER ( 3000+ cfm)
BTS BUILT TO SUITE
IOPG INLET-OUTLET PRESSURE GAUGE
IOTG INLET-OUTLET TEMPERATURE GAUGE
TTG TANK MOUNTED TEMPERATURE GAUGE
VMI VISUAL MOISTURE INDICATOR
SST STAINLESS STEEL CONTROL AIR TUBING
CR CONTROL LINE PRESSURE REGULATOR
EPH ELECTRICAL PANEL HEATER
AC AFTER COOLER
ELECTRICAL ENCLOSURE+
N4 NEMA 4 ELECTRICAL ENCLOSURE
N4X-P NEMA 4X POLYCARBONATE
N4X NEMA 4X STAINLESS STEEL
N7 NEMA 7 EXPLOSION PROOF
CONDENSATE DRAIN+
FD CONDENSATE FLOAT DRAIN
EZLD ELECTRONIC ZERO LOSS DRAIN
MZLD MECHANICAL ZERO LOSS DRAIN
HPTD HIGH PRESSURE TIMER DRAI
PACKAGES +
LAP LOW AMBIENT PACKAGE
SZ SUBZERO PACKAGE
RS RENTAL SKID
ZP ZERO PURGE
DEWPOINT & DIGITAL MONITORING+
DCC+DDP DEMAND CYCLE CONTROL
DDPM -40 DIGITAL DEW POINT MONITOR (-40° F )
FTS FAILURE TO SWITCH ALARM
DCA DRY CONTACT ALARM
ESS EMERGENCY STOP SWITCH
RSS REMOTE START / STOP
BYPASS +
3VBP THREE VALVE BY-PASS
9VBP NINE VALVE BY-PASS
CONTROLLERS+
ALT-C-3 NBPABC (Allen Bradley Interface)
ALT-C-4 NBPSC (Siemens Interface)
ALT-C-5 NBPI (Idec Interface)
FILTRATION +
MF Mounted Filtration
SP-F Special Filter Configuration
FS Filter Skid (Island)
Your next step toward working with NEXT Air & Gas is to contact us for a Quote. Fill out the information below and give us the appropriate information needed to get started. Be sure to fill out all the contact information and our team will reach out with any questions or concerns.
If you’d rather speak to Sales Engineering, feel free to contact us at (865) 635-8178.
Below are links to product information and brochures. Please click and download at your convenience. If you have any questions or suggestions on materials you think would be helpful, please call us at (865) 635-8178.
Super-Tough, Maintenance-Free Bi-Directional Piston Valves
These non-lubricated, high quality, high performance, bi-directional piston valves are designed to handle the most severe conditions. They require no maintenance and come with a five-year limited warranty.
Butterfly Valves for Precise Control
These versatile, high-performance butterfly valves are used by Next Air & Gas to provide you with precision control and complete bubble-tight shut o . The digitally controlled actuators provide easy PLC interface and feature fast response time. The tongue-and-groove seat design feature ensures complete isolation of flowing media from the body and stem. Rugged and reliable, these valves are designed to provide years of trouble-free service.
Angle Body Piston Valve
These high-performance, 2-way direct acting valves are designed for reliability and durability. It uses a profiled disc in conjunction with a high-resolution compact positioner and linear feedback potentiometer to provide precise proportional flow. The stainless steel internals and a tough fiber composite actuator body, along with the use of oversized bearing and Viton® seals, make it possible to consistently provide smooth piston movement for years of trouble-free service.
