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Name: Tony Yeung

Tel: +86-21- 61905750

Fax: +86-21-51687238

Mobile: +86-15900769420

E-mail: sales@crownwell-compressor.com

Add: No.118, Hangtou Road, Da Mai Bay Industrial Park, Pudong New District, Shanghai, China

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Item :
Details :

The desiccant used dryers have been selected basis our ten plus years of experience in the design and manufacturing of Desiccant Dryers. The vessels have been designed specifically for this service. Vessel diameters have been chosen to allow a minimum of five (5) seconds contact time, which is essential for complete moisture adsorption and consistent dew-points. Air velocity through the dryer has been conservatively designed at less than fifty-five feet per minute, minimizing desiccant fluidization and dusting, and resulting in high dryer reliability.


Externally heated air dryer adds a heater based on CWPE dryer to heat the purge air. It not only benefits the regeneration effect but also decreases regeneration purge loss. 8 hours standard cycle, dryer cycles are controlled by a timer.


And we can also supply the option functions as below:

l         Digital Dew Point Monitor

l         PLC Controller With Connection Port

l         Without Failure To Shift Alarm -DF1, -RS485, -MODBUS

l         Including Failure To Shift Alarm -DF1, -RS485, -MODBUS

l         Dew Point Demand Control


Dew Point Demand Control:

The Dew Point is energy conservation method that can extend the drying cycle without extra purging. During periods of lower moisture loads, the Dew Point Demand system offers, in one compact package, the utmost in flexibility and accuracy sensing the actual dew point at the outlet of the dryer, at the end of the drying cycle, and extends the drying cycle until the preset adjustable dew point set-point is reached. During this extended drying cycle the purge valves are closed and the opposite tower is pressurized and prepared for the drying cycle. The dew point demand option consists of the following: Digital Dew Point Display, Adjustable Set Points, Demand Cycle Light, High Humidity Alarm Light With Dry Contact, 4~20mA Output for Remote Annunciation.


DESICCANT – High strength 1/4” activated alumina.


PREFILTER – A high-efficiency (HC) coalescing filter is factory-mounted on the dryer package. The compressed air is pre filtered prior to entering the dryer's drying vessel to collect any contaminants such as dirt, water or oil droplets from the upstream compressor. The filter has a 0.01 micron and 0.01 ppm rating.


AFTERFILTER – A particulate, (HT) filter is factory-mounted on the dryer package. The compressed air is filtered downstream from the drying vessel to collect any dusting that may have occurred as a result of the drying process. The filter has a 1.0 micron rating.


FILTER DIFFERENTIAL PRESSURE INDICATORS – These are included on pre- and afterfilters to monitor the condition of filter elements.


* For maximum energy efficiency it is recommended to change prefilter and afterfilter elements every year or when they indicate restricted flow.


DRYING VESSELS – Of welded steel construction, all HL models are GB or ASME code stamped. Removable stainless steel screens are provided in the inlet and outlet nozzles of each desiccant tower to prevent carry-over of desiccant. Accessible fill and drain ports.


TOWER PRESSURE GAUGES – 2-1/2” or 3-1/2” dial, 0-300 psig, brass bourdon tube mounted on each vessel for ease of visibility.


PRESSURE RELIEF VALVE – A fire-coded safety valve is located on each desiccant chamber. It is set for 165 psig.



High-performance non lubricated diaphragm valve

Normally open inlet valve

Normally closed exhaust valves

Integrated pilot air circuits.



All models use a high performance, steel bodied check valve with aluminum internals and a silicon seat.


CONTROLS – A NEMA 4 Microprocessor Controller with integrated keypad interface is standard.  Includes a dryer schematic with visual indications of: dryer on, dryer alarm, left/right tower drying and left/right tower regeneration.


ELECTRICAL ENCLOSURE – NEMA 4 is the standard enclosure. Constructed in accordance with UL/ULC 508A.


ASSEMBLY – Fully assembled on self-supporting fabricated steel frame.


MANUAL PURGE ADJUSTMENT – A purge adjustment valve is included with a mounted purge pressure gauge.


MUFFLERS - One for each purge air outlet. 



1” to 6” Schedule 40, SA53 Gr. B ERW carbon steel pipe.

1” to 2” uses threaded 150# black malleable iron fittings.

3” to 6” flanged and welded fittings. ANSI B16.5 Class 150 raised face flanges.


Model Flow Capacity Heat Power Conn. Dimensions LxWxH Weight
M3/min Kw  mm Kg
CW-1PE 1.2 1.2 ZG 1” 405x360x1188 190
CW-2PE 2.4 1.5 ZG 1” 405x360x1646 300
CW-3PE 3.8 2 DN40 405x360x1553 390
CW-6PE 6.5 3 DN40 773x600x1018 550
CW-8PE 8.5 3.5 DN50 862x700x1950 620
CW-10PE 10.7 3.9 DN50 962x700x1880 910
CW-13PE 13 3.9 DN50 962x700x2090 1060
CW-15PE 16 5.1 DN80 1175x800x1908 1060
CW-20PE 23 5.4 DN80 1175x600x2208 1420
CW-25PE 27 7 DN80 1175x700x2020 1630
CW-30PE 33 8.2 DN80 1175x700x2110 2100
CW-40PE 45 10 DN100 1465x700x2393 2600
CW-50PE 55 12.5 DN125 1815x800x2473 3100
CW-60PE 65 15 DN125 1815x800x2673 3700
CW-80PE 85 20.4 DN125 2013x900x2870 4600
CW-100PE 100 25.5 DN150 2300x1500x2933 5200
CW-150PE 150 40 DN200 2700x1800x3429 7800
CW-200PE 200 52 DN250 1900x2000x3529 8200