Hydronix™ Hydronix™ - ZEKS Compressed Air Solutions

INNOVATIVE COMPRESSED AIR SOLUTIONS
COMPRESSED AIR SOLUTIONS TM
www.zeks.com
Hydronix
HEATLESS PURGE
HEATLESS PURGE
DESICCANT AIR DRYERS
MPS SERIES 20-60 scfm
HPS SERIES 80-4500 scfm
H Y D R O N I X H E A T L E S S P U R G E D E S I C C A N T A I R D R Y E R S

DELIVERING POWERFUL COMPRESSED AIR
Use of ZEKS’ Hydronix Desiccant Air
Dryers is an efficient and reliable means of
providing dry compressed air for extremely
moisture-sensitive applications. These
dryers use a heatless purge process for
desiccant regeneration to deliver dry
compressed air that has a dew point of
-40°F. Hydronix models can be selected
to achieve dew points as low as -80ºF or
-100°F. The heatless purge process
consumes little energy while reliable valve
and switching components provide
consistent performance for long dryer life.
Available in a broad range of compressed
air flow capacities, the Hydronix dryer
family employs proven design, reliable
components and integrated controls to
provide compatibility and continuous
trouble-free operation in compressed air
systems.
Purge pressure gauge
indicates reactivation
flow rate
Removable stainless
steel retainer screens
High strength
desiccant for
long life
Vessels in
accordance with
ASME Section VIII,
Div. 1
Visual dryer
performance
indicator
Particulate
control air
line filter
Enclosed wiring for
maximum protection
Purge flow adjustment valve
Separate FILL and
DRAIN ports
Towers sized for low velocity
and high contact time
ASME required relief valves
Tower pressure gauges
Standard light indications:
• Power ON
• Left tower DRYING
• Right tower DRYING
Mufflers with built-in relief valves
for low noise and maximum
protection
SIZING PROCEDURE
For inlet flows at operating pressures
other than 100 PSIG, multiply the
standard capacity by the correction
factor from the table below.
Example:
410 SCFM x .91 = 373 SCFM @ 90 PSIG
For purge air requirements, multiply the
inlet flow by the purge rate factor from
the table.
373 SCFM x .160 = 59.7 SCFM @ 90 PSIG
Outlet Flow = Inlet Flow – Purge Flow
OPERATING CONDITIONS
Pressure PSIG Correction Factor Purge Rate
75 .78 .190
80 .82 .180
85 .87 .170
90 .91 .160
95 .95 .155
100 1.00 .150
105 1.04 .140
110 1.09 .135
115 1.13 .130
120 1.17 .125
125 1.22 .120
130 1.26 .117
135 1.30 .113
140 1.35 .109
145 1.39 .106
150 1.44 .102
Solid state timer for
accurate control and
operation
Simple, safe, reliable
switching valves
SELECTION CHART
Model 20MPS 30MPS 40MPS 60MPS 80HPS 100HPS 140HPS
Flow Capacity* -40° Dew Point 20 30 40 60 80 100 140
-80° Dew Point 16 24 32 48 64 80 112
-100° Dew Point 16 24 32 48 64 80 112
Width in. (cm) 22 (56) 22 (56) 22 (56) 22 (56) 26 (66) 27 (69) 29 (74)
Depth in. (cm) 15 (38) 15 (38) 15 (38) 15 (38) 26 (66) 26 (66) 26 (66)
Height in. (cm) 31 (79) 44 (112) 44 (112) 56 (142) 85 (216) 85 (216) 85 (216)
Air Connection In & Out 1/2"FPT 1/2"FPT 3/4"FPT 3/4"FPT 3/4"FPT 1"FPT 1"FPT
Shipping Weight lbs. (kg) 200 (91) 230 (104) 255 (116) 300 (136) 480 (218) 500 (227) 650 (295)
Desiccant Weight lbs. (kg) 22 (10) 44 (20) 44 (20) 65 (29) 89 (40) 89 (40) 164 (74)
Maximum Working PSIG** 150 150 150 150 150 150 150
*Capacities shown are for inlet flows at operating pressures of 100 PSIG
**Consult factory for operating pressures in excess of 150 PSIG
Note: Standard voltage for all models is 115/1/60 & 50
Note: Operating dryers without a coalescing filter with auto drain will void warranty
Note: Weights and dimensions are approximate
Hydronix
HEATLESS PURGE
DESICCANT AIR DRYERS
MPS SERIES 20-60 scfm
HPS SERIES 80-4500 scfm
Normally closed exhaust valves
(spring-assisted) provide fail-safe
operation
(Shown with optional equipment)

DRYING CAPABILITY
COMPRESSED AIR SOLUTIONS TM
COMPRESSED AIR SOLUTIONS TM
DRY AIR
OUTLET
EFFICIENT OPERATION AND RELIABLE DESIGN
The heatless dryer works by passing compressed air through a tower filled with
desiccant. Moisture from the airstream is adsorbed onto the desiccant thereby
producing extremely dry outlet air. While one tower is on-line performing the
drying function, the second tower is off-line being regenerated by a portion
(approx. 15%) of the discharge dry air flow.
This operation is controlled by valves (V1 & V2) which divert the flow of air to the
on-line tower and away from the regenerating tower. At the same time, a purge
valve (V3 or V4) allows the regenerating air flow entering the off-line tower to
escape and thereby purge the moisture adsorbed from the desiccant to the
atmosphere. On a -40ºF dewpoint dryer, this process lasts for four minutes and
thirty seconds, at which time repressurization of the off-line (regenerating) tower
begins to prevent desiccant bed fluidization. The purge valve (V3 or V4) will close
so that the off-line tower is allowed to repressurize.
After repressurization is complete, the flow valves (V1 & V2) will divert the drying
air flow to the previously off-line tower. Simultaneously, a purge valve (V3 or V4)
will open allowing the previously on-line dryer tower to depressurize and begin
regeneration. This will last for four minutes and thirty seconds at which point the
process will again be reversed. The total cycle time is ten minutes.
C
C1
O1
PI1
D
PI3
RV1 RV2
PI2
V1
V3
M1
WET AIR
INLET
C2
V5
V2
V4
M2
A
DRYING FLOW
REGENERATING FLOW
B
180HPS 280HPS 410HPS 560HPS 730HPS 920HPS 1140HPS 1630HPS 1910HPS 2300HPS 2800HPS 3300HPS 4500HPS
180 280 410 560 730 920 1140 1630 1910 2300 2800 3300 4500
144 224 328 448 584 736 912 1304 1528 1840 2240 2640 3600
144 224 328 448 584 736 912 1304 1528 1840 2240 2640 3600
35 (89) 37 (94) 47 (119) 49 (124) 61 (155) 63 (160) 65 (165) 88 (224) 92 (234) 94 (239) 94 (239) 113 (287) 119 (302)
30 (76) 30 (76) 33 (84) 33 (84) 48 (122) 48 (122) 48 (122) 57 (145) 57 (145) 57 (145) 57 (145) 63 (160) 63 (160)
87 (221) 90 (229) 92 (234) 95 (241) 96 (244) 100 (254) 101 (257) 115 (292) 110 (279) 110 (279) 123 (312) 121 (307) 125 (318)
1-1/2"FPT 1-1/2"FPT 2"FPT 2"FPT 3"FPT 3"FPT 3"FPT 4"FLG 4"FLG 4"FLG 4"FLG 6"FLG 6"FLG
700 (318) 830 (377) 1205 (547) 1400 (636) 1590 (722) 1825 (828) 2478 (1125) 3050 (1385) 3600 (1634) 5200 (2361) 6800 (3087) 7500 (3405) 9600 (4358)
164 (74) 266 (121) 400 (181) 538 (244) 756 (343) 918 (416) 1166 (529) 1830 (830) 2497 (1133) 2300 (1043) 2766 (1255) 3500 (1588) 5800 (2631)
150 150 150 150 150 150 150 150 150 150 150 150 150

FEATURES
MPS HPS
MODEL 20-60 80-1140 1630-4500
Power Cord S - -
Wall Mounting (std. units only) S - -
Power ON Light S S S
Tower Sequencing Light S S S
Tower Pressure Gauges S S S
Tower Relief Valves O S S
ASME Stamped Vessels S S S
CRN Stamped Vessels S S O
Removable SS Retainer Screens S S S
Fill and Drain Ports (Separate) S S S
Solid State Timer Controls S S S
Shipped with Desiccant S S S*
Adjustable Purge O S S
Weatherproof/NEMA 4 O O O
NEMA 12** O O O
NEMA 7 O O O
Moisture Indicator O S S
Control Air Line Filter - S S
Control Air Line Filter Shutoff Valve - O S
Pneumatic Operation O O O
Failure to Shift Alarm O O O
Moisture Load Control (includes FTS) O O O
High Humidity Alarm O O O
Remote Alarm Contacts O O O
Factory Mounted Pre and Afterfilters O O O
3-Valve Bypass for Filters and/or Dryer O O O
250 PSIG Design O O O
UL/ULC Certified Enclosure O O O
S-Standard
O-Optional
Hydronix
HEATLESS PURGE
DESICCANT AIR DRYERS
MPS SERIES 20-60 scfm
HPS SERIES 80-4500 scfm
1302 Goshen Parkway
West Chester, PA 19380
610-692-9100 800-888-2323
FAX 610-692-9192
www.zeks.com
* Models 2800-4500 shipped separately
**Built to NEMA 4 Standards
DRYER COMPONENTS
The Valves
The control valves used on the HPS series of
ZEKS Hydronix heatless desiccant dryers are
non-lubricated, air-operated, diaphragm
valves. The valve design allows for higher
flows with a lower associated pressure
drop than alternate valve designs. The
valve’s unique seating design is more
reliable than four way or shuttle valves,
reducing the probability of valve failure
due to desiccant dust and other foreign contaminants. Integral
moving parts made of non-corrosive material, in conjunction with
a preformed and stress relieved diaphragm, provide durability and
long cycle life. In the demanding fast-cycling world of heatless
desiccant dryers, any type of valve is subject to maintenance. In
those instances, it is crucial that repair can be completed quickly
to minimize downtime. The ZEKS Hydronix valves are designed
so that if valve repair is required, all internal components can be
easily removed and replaced without disturbing dryer piping or
removing the valve body.
The Timer
The Hydronix desiccant dryer is
controlled by a state-of-the-art timer,
delivering consistent, trouble-free dryer
operation. This device requires no
adjustments in order to achieve reliable
sequencing of the valve cycling. Also
available within the solid state timer technology is the capability of
reducing the amount of regeneration air consumed with the
addition of the ZEKS AirMizer feature.
AirMizer
The ZEKS AirMizer option features a solid
state controller integrated with a
moisture analyzer which allows for
automatic adjustment of purge air
usage based on actual demand. The
AirMizer prevents the purge exhaust
valves from opening until a predetermined
moisture load is adsorbed by the desiccant
beds. This is achieved by the use of in-bed air sampling probes
which continuously monitor the “drying tower” for moisture
content. Unlike other systems that are based on indirect readings
such as temperature rise, inlet loading conditions or desiccant
conductivity, the AirMizer monitors exactly what you paid for —
dry air. As long as the sampling probes “see” dry air, no purge air
is consumed. With the use of the AirMizer, yearly operating costs
can be substantially reduced. As an addition to the AirMizer
option, failure to shift alarm is included.
Specifications, illustrative materials and descriptions contained herein were as accurate as known at the time
this publication was approved for printing. The company reserves the right to change specifications,
discontinue models, equipment or design without notice and without incurring obligation. The information
set out in this brochure is for preliminary information only and is not intended to constitute any representation
or warranty by ZEKS to potential customers or to form the basis of a contract with any customer.
©2001, ZEKS Compressed Air Solutions Form: HPS-0201-7.5M-DBO Printed in USA