A R R O W
P N E U M A
T I C S
Fred C. Gilbert Co.
106 Norris Road
Bakersfield, Ca. 93308
661-399-9569
fax 661-393-9654
FILTERS
REGULATORS
LUBRICATORS
ACCESSORIES
H E A T L E S S
REGENERATIVE DRYERS
Twin tower regenerative air dryers are the dryers of choice
when traditional refrigerated dryers do not provide sufficient air
quality required for today’s applications. Arrow’s reliable ”RH”
series of heatless twin tower regenerative dryers normally
produce –40°F and can optionally be as low as –100°F dew
points. The dryer utilizes activated alumina for efficient drying of
compressed air and will operate under extreme environmental
conditions. Activated alumina is aluminum oxide that is highly
porous and exhibits tremendous surface area (350 sq.
meters/gram). Activated alumina is resistant to thermal shock
and abrasion. It has a smooth, uniform ball size that prevents
channeling of the air flow, which maintains low bed velocities.
This maintains air contact time for efficient moisture removal and
minimal pressure drop.
Height
Arrow’s microprocessor dryer controls are housed in a NEMA 4
rated enclosure and provide control of pneumatically piloted
valves chosen for long life and high air flow.
Operation
Compressed air saturated with water vapor passes through the
inlet valve and flows upward through the desiccant in tower “A”.
Tower “A” is said to be “on line”. The activated alumina desiccant
adsorbs the water vapor in the compressed air and the pressure
dew point is lowered to a minimum of –40°F. The dried air then
passes through a check valve assembly to the outlet piping and
then to the factory tools or equipment.
While the air is being dried in tower “A”, the desiccant in tower
“B” that adsorbed moisture in the previous cycle is simultaneously
regenerated. Tower “B” is “off line”. At the start of the regeneration
cycle, tower “B” is depressurized from the operating pressure to
atmospheric pressure with a downward air flow and passes
through the purge valve and out the purge muffler. Regeneration
continues with a portion of the dry air from tower “A” passing
through an orifice assembly and downward through tower “B”
out to atmosphere.
This process takes about ten minutes to complete, with the drying
cycle using about five minutes to provide the desired dew point.
The regeneration cycle takes approximately 30 seconds less
to allow for repressurization before switchover. The complete
operation therefore consists of two cycles, one for drying and
the other for regeneration. Required purge air is generally 15%
of rated flow. As pressure is a direct function of purge air, the
higher the pressure, the lower the purge. All Arrow Pneumatics
heatless regenerative dryers have a 2 psi maximum pressure
drop at standard conditions.
Width
Depth
Model
No.
Capacity
SCFM
Pipe Size
Connection
Height
Inches
Width
Inches
Depth
Inches
Weight
Lbs.
RH203
RH204
RH205
RH206
RH207
RH208
RH209
RH210
RH211
RH212
RH213
RH214
RH215
RH216
RH217
RH218
RH219
RH220
RH221
RH222
RH223
RH224
35
50
75
100
125
150
200
250
300
350
400
500
650
750
900
1,100
1,300
1,500
1,800
2,100
2,500
3,000
3/4” NPT
3/4” NPT
3/4” NPT
1” NPT
1” NPT
1-1/2” NPT
1-1/2” NPT
1-1/2” NPT
2” NPT
2” NPT
2” NPT
2” NPT
2-1/2” NPT
2-1/2” NPT
2-1/2” NPT
3” FLG
3” FLG
3” FLG
3” FLG
3” FLG
4” FLG
4” FLG
40
40
40
64
64
75
75
75
68
68
86
86
97
97
97
97
97
122
122
122
122
122
44
44
44
44
44
49
49
49
51
51
51
51
67
67
67
72
72
96
96
96
108
108
24
24
24
24
24
36
36
36
36
36
36
36
36
36
36
36
36
60
60
60
60
60
360
508
599
627
657
739
797
855
918
1,124
1,187
1,245
1,905
2,022
2,197
2,500
3,350
3,775
4,550
5,725
6,500
8,500
1) Specifications and dimensions are subject to change without notice.
3) Standard operating pressure is 150 psig maximum.
2) Standard design conditions are 100°F inlet, 100 psig and 100˚F
ambient. For other than standard design conditions or capacities up to
12,000 scfm, consult your factory representative.
4) Standard voltage is 120V/1ph/60Hz
5) Pre and after filters must be used with all regenerative air dryers.
6) Maximum pressure drop of 2 psi
Standard Features of
Heatless Regenerative Dryers
Fully automatic to provide the most efficient operation.
Panel mounted gauges provide accurate monitoring
of tower pressures.
Adjustable purge regulator is utilized to control purge
air for optimum dryer efficiency.
Indicator lights display tower operating status.
Visual moisture indicator detects increase in dew point
on outlet air flow.
Reliable pneumatic valve operation is achieved by using poppet,
butterfly and check valves. All valves are non-lubricated to provide
maximum dependability and maintenance free operation.
Controlled repressurization gradually increases pressure in
the tower to eliminate line surges and desiccant attrition.
Removable stainless steel diffuser screens disperse air flow
for maximum desiccant capacity and to allow uniform air
distribution throughout the desiccant bed.
NEMA 4 electrical construction.
TOWER ”A”
TOWER ”B”
O P T I O N S O F H E AT L E S S R E G E N E R AT I V E D RY E R S
Universally accepted 120V/1ph/60Hz power requirements
for easy connection.
Power on indicator to show dryer is energized and functioning.
Tower relief valves to prevent overpressurization.
Dew Point Demand Plus
220V/1ph/60Hz
ASME coded and stamped vessels.
Dew Point Demand
Pre-Piped Connection with Pre and
after Filters
Separate fill and drain ports for easy desiccant change.
High Humidity Alarm
–100°F Pressure Dew Point
Pre-Piped Filter Package with Three
Valve Dryer Bypass
Remote Alarm Contacts
Pre-Piped Filter Package with Seven
Valve Dryer Bypass
Remote Alarm Dry Contacts
NEMA 7 Explosion Proof
Electrical Construction
RS-232 Serial Communications
Interface
Microprocessor controls provide reliable sequencing of
dryer functions.
Control air line filter with replaceable element to protect
pneumatic circuitry.
Exhaust purge muffler for quiet operation.
Pressure alarm package indicates failure to shift, failure to
depressurize, failure to repressurize and failure to purge.
Total Pneumatic Controls
Low Ambient Package
See pages 8 and 9 for descriptions of optional features.
3
E X T E R N A L LY
HEATED
REGENERATIVE DRYERS
The Arrow Pneumatics externally heated twin tower regenerative
dryers combine the high reliability of our “RH” series desiccant
dryer and adds external heaters to form the “RE” series dryer.
Dew points, normally –40°F, can optionally be as low as
–100°F. Purge air is approximately 7% of rated flow, thus
reducing the operating costs of the heated twin tower
regenerative dryers compared to heatless regenerative dryers.
Purge air in the “RE” series is heated by a 100% efficient incoloy
sheath electric heater housed in an externally mounted shell.
A thermostat controls the temperature of the heater allowing
long life and energy savings. The heater and purge piping are
insulated for safety and further energy savings. Arrow “RE” series
heated dryers have microprocessor controls housed in a NEMA 4
rated enclosure. Pneumatically actuated valves have been chosen
for long life and high air flow.
Height
Operation
Regeneration of the “RE” series dryers is similar to the twin tower
regenerative dryers in that the airflow is reversed between
operation and regeneration. Compressed air saturated with
water vapor passes through the inlet valve and flows downward
through the desiccant in tower “A”. Tower “A” is said to be
“on-line”. The activated alumina desiccant adsorbs water vapor in
the compressed air and the pressure dew point is lowered to a
minimum of –40˚F. The dried air then passes through the outlet
valve to the factory tools and/or equipment.
While the air is being dried in tower “A”, the desiccant in tower
“B” that absorbed moisture in the previous cycle is simultaneously
regenerated. Tower “B” is “off line”. At the start of the regeneration
cycle, tower “B” is depressurized from the operating pressure
to atmospheric pressure with an upward air flow which passes
through the purge valve and out the purge muffler. Regeneration
continues with dried purge air from tower “A” that is expanded
to atmospheric pressure to lower its vapor pressure. This purge air
is heated and passes through an orifice assembly and upward
through tower “B” out to atmosphere. The temperature of the
heater can be adjusted for better efficiencies. The combination
of heated and lowered vapor pressure air allows for efficient
and cost effective desiccant regeneration.
The entire process therefore consists of two cycles, one for
drying and the other for regeneration. This process takes 8 hours
to complete, with the drying cycle using 4 hours to provide
the desired dew point, and regeneration cycle taking 4 hours;
3 hours for heating and 1 hour for cooling. As pressure is a
direct function of purge air, the higher the pressure, the lower the
purge. All Arrow Pneumatics externally heated regenerative dryers
have a 2 psi maximum pressure drop at standard conditions.
Width
Model
No.
RE231
RE232
RE233
RE234
RE235
RE236
RE237
RE238
RE239
RE240
RE241
RE242
RE243
RE244
RE245
RE246
RE247
RE248
RE249
RE250
Capacity
Heater
SCFM Power (KW)
50
.75
75
1.25
100
1.50
150
2.00
200
2.50
250
3.00
300
4.00
350
4.00
400
5.00
500
6.00
650
6.50
750
7.50
900
9.00
1,100
12.00
1,300
12.00
1,500
15.00
1,800
20.00
2,100
20.00
2,500
24.00
3,000
30.00
Depth
Pipe Size
Connection
3/4” NPT
3/4” NPT
1” NPT
1-1/2” NPT
1-1/2” NPT
1-1/2” NPT
2” NPT
2” NPT
2” NPT
2” NPT
2-1/2” NPT
2-1/2” NPT
2-1/2” NPT
3” FLG
3” FLG
3” FLG
3” FLG
3” FLG
4” FLG
4” FLG
Height Width Depth Weight
Inches Inches Inches Lbs.
40
44
24
440
40
44
24
600
64
44
24
760
75
49
36
930
75
49
36 1,050
75
49
36 1,330
68
51
36 1,525
68
51
36 1,700
86
51
36 1,940
86
51
36 2,275
97
67
36 2,650
97
67
36 3,170
97
67
36 3,750
97
72
36 4,175
97
72
36 4,580
122
96
60 5,020
122
96
60 5,410
122
96
60 6,040
122
108
60 8,720
122
108
60 9,880
1) Specifications and dimensions are subject to change without notice.
3) Standard operating pressure is 150 psig maximum.
2) Standard design conditions are 100°F inlet, 100 psig and 100˚F
ambient. For other than standard design conditions or capacities up to
12,000 scfm, consult your factory representative.
4) Standard voltage for RE231 thru RE233 is 120V/1ph/60Hz.
RE234 thru RE250 is 480V/3ph/60Hz.
5) Pre and after filters must be used with all regenerative air dryers.
6) Maximum pressure drop of 2 psi
Standard Features of Externally
Heated Regenerative Dryers
Externally mounted heater allows easy element service and
efficiently conducts heat uniformly throughout the desiccant
eliminating localized hot spots, desiccant fusing and heater
burnouts. Heater elements are incoloy sheathed for long,
trouble free service.
Heater thermostat controls and maintains user adjusted
regeneration temperature to account for changing flow
or seasonal moisture variations.
Interlock circuit protects units from heater burnout due
to loss of purge air flow.
Non-lubricated control valves are pneumatically actuated
to provide maximum dependability and maintenance
free operation.
Fully automatic to provide the most efficient operation.
Panel mounted gauges provide accurate monitoring of
tower pressures and temperatures.
Adjustable purge regulator is utilized to control purge air
for optimum dryer efficiency.
Indicator lights display tower operating status.
TOWER ”A”
TOWER ”B”
O P T I O N S O F E X T E R N A L LY
H E AT E D R E G E N E R AT I V E D RY E R S
Dew Point Demand Plus
Dew Point Demand
Pre-Piped Connection with Pre and
after Filters
Visual moisture indicator detects increase in dew point on
outlet air flow.
Controlled repressurization gradually increases pressure in
the tower to eliminate line surges and desiccant attrition.
Removable stainless steel diffuser screens disperse air flow
for maximum desiccant capacity and to allow uniform air
distribution throughout the desiccant bed.
Pre-Piped Filter Package with Three
Valve Dryer Bypass
NEMA 4 electrical construction.
Pre-Piped Filter Package with Seven
Valve Dryer Bypass
Tower relief valves to prevent overpressurization.
Remote Alarm Contacts
Remote Alarm Dry Contacts
Power Saver Thermal Control
Separate fill and drain ports for easy desiccant change.
NEMA 7 Explosion Proof
Electrical Construction
Heater Overtemp Alarm
Microprocessor controls provide reliable sequencing
of dryer functions.
High Humidity Alarm
–100°F Pressure Dew Point
Low Ambient Package
RS-232 Serial Communications
Interface
220V/1ph/60Hz
See pages 8 and 9 for descriptions of optional features.
Power on indicator to show dryer is energized and functioning.
ASME coded and stamped vessels.
Control air line filter with replaceable element to protect
pneumatic circuitry.
Exhaust purge muffler for quiet operation.
Pressure alarm package indicates failure to shift, failure to
depressurize, failure to repressurize and failure to purge.
5
B L O W E R
PURGE REGENERATIVE DRYERS
Arrow Pneumatics “BP” series blower purge regenerative
dryers are more economical to operate than heated or heatless
regenerative dryers. An external blower supplies heated
atmospheric air as the purge air source for regeneration.
This allows total air compressor capacity for plant operations.
Eliminating the use of compressed air as purge allows the plant to
more economically size the compressor only for plant operations.
The blower purge offers the same easy maintenance features
found in our heated regenerative dryer. The blower is designed
for industrial applications and has an intake filter that protects
the blower and dryer from damaging air born particles.
Operation
Our “BP” series blower purge dryers are fully automatic meaning
purge air from compressor is not needed. Regeneration is similar
to that of the “RE” series dryers in that the drying air flow is
downward and is reversed between operation and regeneration.
Compressed air saturated with water vapor passes through the
inlet valve and flows downward through Tower “A”. Tower “A”
is said to be “on-line.” The activated alumina desiccant adsorbs
water vapor in the compressed air and the pressure dew point
is lowered to a minimum of –40°F. The dried air then passes
through the outlet valve to the factory tools or equipment.
While the air is being dried in tower “A”, the desiccant in
tower “B” that absorbed moisture in the previous cycle is
simultaneously regenerated. Tower “B” is “off line”. At the start
of the regeneration cycle, tower “B” is depressurized from the
operating pressure to atmospheric pressure with an upward air
flow which passes through the purge valve and out the purge
muffler. Regeneration continues with purge air being generated
by an external blower. This purge air is heated and passes
upward through tower “B” out to atmosphere. The temperature
of the heater can be adjusted for better efficiencies. The
combination of heated and lowered vapor pressure air allows
for efficient and cost effective desiccant regeneration.
The entire process therefore consists of two cycles, one for
drying and the other for regeneration. This process takes 8 hours
to complete, with the drying cycle using 4 hours to provide the
desired dew point, and regeneration cycle taking 4 hours;
3 hours for heating and 1 hour for cooling.
Model Capacity
No.
SCFM
BP123
200
BP144
350
BP183
600
BP204
800
BP244 1,100
BP304 1,500
BP325 2,100
BP366 3,000
BP425 4,000
BP485 5,000
BP545 6,500
BP605 8,000
BP665 10,000
BP725 12,000
Heater
KW
6.00
9.00
15.00
20.00
36.00
40.00
50.00
75.00
105.00
140.00
175.00
230.00
280.00
340.00
Blower
Pipe Size Height
KW
Connection Inches
0.75 1-1/2” NPT
74
1.12
2” NPT
88
1.50 2-1/2” NPT
80
2.24
3” FLG
92
3.73
3” FLG
98
7.46
4” FLG
94
7.46
4” FLG
101
11.19
6” FLG
106
11.19
6” FLG
109
14.92
6” FLG
111
22.38
6” FLG
117
37.30
8” FLG
126
55.95
8” FLG
130
74.60
10” FLG
134
1) Specifications and dimensions are subject to change without notice.
3) Standard operating pressure is 150 psig maximum.
2) Standard design conditions are 100°F inlet, 100 psig and 100˚F
ambient. For other than standard design conditions or capacities up to
12,000 scfm, consult your factory representative.
4) Standard Voltage 480V/3ph/60Hz
5) Pre and after filters must be used with all regenerative air dryers.
Weight
Lbs.
1,375
2,260
2,900
4,150
5,600
7,425
8,675
11,200
15,500
17,700
20,900
26,400
31,600
37,800
Standard Features of Blower
Purge Regenerative Dryers
Externally mounted heater allows easy element service and
efficiently conducts heat uniformly throughout the desiccant
eliminating localized hot spots, desiccant fusing and heater
burnouts. Heater elements are incoloy sheathed for long,
trouble free service.
Heater thermostat controls and maintains user adjusted
regeneration temperature to account for changing flow
or seasonal moisture variations.
Interlock circuit protects units from heater burnout due to loss
of purge air flow.
Non-lubricated control valves are pneumatically actuated to
provide maximum dependability and maintenance free operation.
Fully automatic to provide the most efficient operation.
TOWER ”A”
TOWER ”B”
Panel mounted gauges provide accurate monitoring of
tower pressures and temperatures.
Indicator lights display tower operating status.
Visual moisture indicator detects increase in dew point on
outlet air flow.
OPTIONS OF BLOWER PURGE
R E G E N E R AT I V E D RY E R S
Dew Point Demand Plus
Controlled repressurization gradually increases pressure in
the tower to eliminate line surges and desiccant attrition.
Removable stainless steel diffuser screens disperse air flow
for maximum desiccant capacity and to allow uniform air
distribution throughout the desiccant bed as applicable.
Pre-Piped Filter Package with Three
Valve Dryer Bypass
NEMA 4 electrical construction.
Tower relief valves to prevent overpressurization.
Remote Alarm Contacts
Pre-Piped Filter Package with Seven
Valve Dryer Bypass
Remote Alarm Dry Contacts
Heater Overtemp Alarm
Separate fill and drain ports for easy desiccant change.
NEMA 7 Explosion Proof
Electrical Construction
Blower Purge Cool Down Loop
Microprocessor controls provide reliable sequencing of
dryer functions.
Low Ambient Package
RS-232 Serial Communications
Interface
Control air line filter with replaceable element to protect
pneumatic circuitry.
Power Saver Thermal Control
High Humidity Alarm
Dew Point Demand
Pre-Piped Connection with Pre and
after Filters
Power on indicator to show dryer is energized and functioning.
ASME coded and stamped vessels.
Exhaust purge muffler for quiet operation.
Heavy-duty blower designed for long life with intake filter
to protect the blower and dryer from damaging particles.
Butterfly throttle valve controls amount of purge air.
See pages 8 and 9 for descriptions of optional features.
Pressure alarm package indicates failure to shift, failure to
depressurize, failure to repressurize and failure to purge.
7
O P T I O N A L
FEATURES
Dew Point Demand Plus
(PICTURED) Dew Point Demand Plus is an energy saving system that
allows the user to program a controller for the desired dew point.
This system regenerates the “off-line” vessel completely and allows that
vessel to remain idle, while the “on-line” vessel dries service air. Outlet
air flow is continuously sampled and once the desired dew point is
reached a “tank switch-over” occurs and a new cycle begins. This
option saves a significant amount of “purge air” each year thereby
providing energy saving. This option includes a programmable digital
display, an extremely accurate sensor and a high humidity alarm.
DEW POINT DEMAND PLUS
Dew Point Demand
(PICTURED) Dew Point Demand is a cost effective alternative to Dew
Point Demand Plus. This system operates similar to the Dew Point
Demand Plus but does not have the digital display, high humidity
alarm or an adjustable dew point “tank switchover”. The “tank
switchover” occurs at a fixed –40˚F dew point.
High Humidity Alarm
This option continuously monitors the outlet air stream for dew point
performance. If a high humidity condition should occur, a panel
mounted visual alarm is energized.
RS-232 Serial Communications Interface
Allows serial port connections for computer monitoring of dryer
functions and operating statuses.
Heater Overtemp Alarm
Should a heater overtemperature condition exist, the integrated
overtemperature sensor automatically shuts down the heater until it
cools down to an acceptable temperature range. The sensor then
resets itself and heater operation will begin again. A panel mounted
visual alarm is energized during the overtemperature condition.
Remote Alarm Contacts
Contacts will be supplied for each alarm allowing an easy
connection method for energizing remote visual or audible alarms.
A 120-volt signal is sent when a failure occurs.
Remote Alarm Dry Contacts
This option closes a contact in the event of a failure condition
allowing the customer supplied alarm circuit to be activated.
Maximum voltage and current are 120 volt, 3 amperes.
–100˚F Pressure Dew Point
This option lowers the dew point from the standard –40˚F to –100˚ F
On heatless dryers, the cycling time is adjusted accordingly and a
repressurizing system is added. On the heated dryers, a split bed
of activated alumina and molecular sieve is added.
Low Ambient Package
Low ambient temperature protection is accomplished by encasing
both towers with a rugged insulation. This insulation along with
heat trace cables eliminates “freeze-ups” from low ambient
conditions such as cold outdoor or unheated indoor installations.
DEW POINT DEMAND
Power Saver Thermal Control
This option monitors the temperature of the purge air flow from
the regenerating tower. When the set regeneration temperature
is reached, the heater shuts off. Power Saver minimizes the
electrical energy used during regeneration when you have low
dryer moisture loading. This also prevents dew point spikes
and excessive temperature spikes at tower switchover.
NEMA 7 ENCLOSURE
Blower Purge Cool Down Loop
This option uses dry air from the “on-line” tower to cool and
“polish” the desiccant in the regenerating tower. This feature
ensures –40˚F dew points are maintained during tank switchover.
NEMA 7 Electrical Construction
(PICTURED) For applications where an explosion proof enclosure
and electrical construction are required. NEMA 7 enclosures are
capable of withstanding and containing internal explosions so
that an explosive atmosphere surrounding the enclosure will not
be ignited. Enclosed heat generating devices shall not cause
external surfaces to reach temperatures capable of igniting
explosive surrounding atmospheres.
Total Pneumatic Controls
For applications where electricity is unavailable or undesired,
such as remote field applications or duty in explosive
environments. This option uses an air driven timer and
control valves in place of electronic components.
Pre-piped Connection With Pre and After Filters
Prefilter and afterfilter mounted to dryer with integral piping ready
to install in system. See following page for filters included.
3-Valve Bypass w/Pre-piped Connection
Prefilter and afterfilter mounted to dryer with integral
piping and 3 bypass valves for bypassing filters and dryer.
Ready to install in system. See following page for filters included.
7-Valve Bypass w/Pre-piped Connection
Prefilter and afterfilter mounted to dryer with integral
piping and 7 bypass valves for individually bypassing either
filter and/or dryer. Ready to install in system. See following
page for filters included.
O P T I O N A L
O P T I O N A L
FEATURES
9
F I L T E R
PACKAGE
H E AT L E S S R E G E N E R AT I V E D R Y E R
R E C O M M E N D E D F I LT E R S
Dryer
Model
Dryer In/Out
Pipe Size
Dryer
SCFM
Prefilter
Model
Afterfilter
Model
RH203
RH204
RH205
RH206
RH207
RH208
RH209
RH210
RH211
RH212
RH213
RH214
RH215
RH216
RH217
RH218
RH219
RH220
RH221
RH222
RH223
RH224
3/4” NPT
3/4” NPT
3/4” NPT
1” NPT
1” NPT
1-1/2” NPT
1-1/2” NPT
1-1/2” NPT
2” NPT
2” NPT
2” NPT
2” NPT
2-1/2” NPT
2-1/2” NPT
2-1/2” NPT
3” FLG
3” FLG
3” FLG
3” FLG
3” FLG
4” FLG
4” FLG
35
50
75
100
125
150
200
250
300
350
400
500
650
750
900
1100
1300
1500
1800
2100
2500
3000
F505-06DF
F505-06DF
F505-06DF
F508-08DF
F508-08DF
F510-12DT
F510-12DT
F510-12DT
F510-16DT
F510-16DT
F518-16DT
F518-16DT
F519-24DT
F529-24DT
F529-24DT
F5AX2M-24DF
F5AX2M-24DF
F5AX2L-24DF
F5AX2L-24DF
F5AX3L-32DF
F5AX4L-48DF
F5AX4L-48DF
F329-06-3
F329-06-3
F329-06-3
F329-08-3
F329-08-3
F329-12-3
F329-12-3
F329-12-3
F3N1-16-3
F3N1-16-3
F3N1-16-3
F3N1-16-3
F3NHF-24-3
F3NHF-24-3
F3NHF-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-32-3
F3AX3L-48-3
F3AX3L-48-3
E X T E R N A L LY H E A T E D R E G E N E R A T I V E D R Y E R
R E C O M M E N D E D F I LT E R S
Dryer
Model
Dryer In/Out
Pipe Size
Dryer
SCFM
Prefilter
Model
Afterfilter
Model
RE231
RE232
RE233
RE234
RE235
RE236
RE237
RE238
RE239
RE240
RE241
RE242
RE243
RE244
RE245
RE246
RE247
RE248
RE249
RE250
3/4” NPT
3/4” NPT
1” NPT
1-1/2” NPT
1-1/2” NPT
1-1/2” NPT
2” NPT
2” NPT
2” NPT
2” NPT
2-1/2” NPT
2-1/2” NPT
2-1/2” NPT
3” FLG
3” FLG
3” FLG
3” FLG
3” FLG
4” FLG
4” FLG
50
75
100
150
200
250
300
350
400
500
650
750
900
1100
1300
1500
1800
2100
2500
3000
F505-06DF
F505-06DF
F508-08DF
F510-12DT
F510-12DT
F510-12DT
F510-16DT
F510-16DT
F518-16DT
F518-16DT
F519-24DT
F529-24DT
F529-24DT
F5AX2M-24DF
F5AX2M-24DF
F5AX2L-24DF
F5AX2L-24DF
F5AX3L-32DF
F5AX4L-48DF
F5AX4L-48DF
F329-06-3
F329-06-3
F329-08-3
F329-12-3
F329-12-3
F329-12-3
F3N1-16-3
F3N1-16-3
F3N1-16-3
F3N1-16-3
F3NHF-24-3
F3NHF-24-3
F3NHF-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX2M-24-3
F3AX3L-48-3
F3AX3L-48-3
Note: For Blower Purge Regenerative Models BP123 thru BP725, consult factory for recommended pre and afterfilters.
Model
RH
RE
BP
Description
Heatless Regenerative Dryer
Externally Heated Regenerative Dryer
Blower Purge Regenerative Dryer
Dryer Size
RH
SCFM
203
35
204
50
205
75
206
100
207
125
208
150
209
200
210
250
211
300
212
350
213
400
214
500
215
650
216
750
217
900
218
1100
219
1300
220
1500
221
1800
222
2100
223
2500
224
3000
Dew Point
A
B
Voltage
1
2
3
4
RE
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
SCFM
50
75
100
150
200
250
300
350
400
500
650
750
900
1100
1300
1500
1800
2100
2500
3000
BP
123
144
185
205
245
305
325
365
366
425
485
545
605
665
725
Dew Point Control & Monitoring Options
1
None
2
Dew Point Demand Plus
3
Dew Point Demand
4
Dew Point Demand and High Humidity Alarm
5
High Humidity Alarm
SCFM
200
350
600
800
1100
1500
2100
2500
3000
4000
5000
6500
8000
10000
12000
Heater Options (RE Dryers Only)
A
None
B
Heater Overtemp Alarm
C
Power Saver Thermal Control
D
Heater Overtemp Alarm and Power Saver
Remote Alarm Contacts Options
1
None
2
Remote Alarm Contacts (120V)
3
Remote Alarm Dry Contacts
Pre-Piping and Bypass Options
A
None
B
Pre-piped Filter Package
C
Pre-piped Filter PKG W/3 Valve Dryer Bypass
D
Pre-piped Filter PKG W/7 Valve Dryer Bypass
RS-232 Interface Option
1
None
2
RS-232 Serial Communications Interface
Low Ambient Options
A
None
B
Low Ambient Insulation
–40˚ F
–100˚ F
Cool Down Loop Option (BP Dryers only)
1
None
2
Blower Purge Cool Down Loop
120V/1ph/60Hz
480V/3ph/60Hz
220V/1ph/60Hz
220V/3ph/60Hz
Electrical Construction
A
NEMA 4
B
NEMA 7
C
Total Pneumatic Controls (RH Dryers Only)
Cool Down Loop Option
Low Ambient Option
RS-232 Interface Option
Pre-piping and Bypass
Options
Remote Alarm
Contacts Options
Heater Options
Dew Point Control and
Monitoring Options
Electrical Construction
Voltage
Dew Point
Dryer Size
Model
R H 2 0 3 A 1 A 3 A 2 A 1 A 1
11