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MD Series
Energy Saving Modular Membrane Air Dryers

FS-Curtis’ MD Series modular membrane compressed air dryers were developed to complement our stable of industry leading refrigeration, adsorption and filtration technologies. Membrane dryers use a bundle of tiny tubular fibers that let fast gases like water vapor permeate through the tube wall to be swept away into the ambient. Our membrane fiber technology features multiple strands to form a continuous microscopic sieve that targets and removes “fast gases” like water molecules as a vapor. Pressure dew points from +50°F to -40°F are achieved by balancing the model size, air pressure and volume (scfm) requirements to the application.

Benefits & Features:
  • Dew points to -40°F
  • Inside-to-outside permeation for greater efficiency
  • Helically wound bundles for low pressure drop, high flow capacity
  • Compact design offers a space-saving point-of-use solution
  • Internal and external epoxy powder coat offers durable protection
  • Modular connections reduce leak points and simplify installation
  • No oxygen is lost due to proprietary membrane design
  • MDS models feature a digital purge control which eliminates the waste of sweep air to save energy

Models: MDM1, MDM4, MDM9, MDM13, MDM24, MDM49, MDM66, MDM106, MDM138, MDS1, MDS4, MDS9, MDS13, MDS24, MDS49, MDS66, MDS106, MDS138

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Quantity
Add to
Quote
Model
100°F Inlet
to 40°F pdp
100°F Inlet
to 0°F pdp
In/Out
Connections
(in.)
Dimension
L x W
Weight
Inlet Flow
(scfm)
Outlet Flow
(scfm)
Inlet Flow
(scfm)
Outlet Flow
(scfm)
MDM1
1.39
1.20
0.85
0.66
3⁄8"
11" X 4"
5
MDM4
4.55
3.95
2.89
2.29
3⁄8"
15" X 4"
6
MDM9
9.47
8.15
5.69
4.37
½"
19" X 4"
7
MDM13
13.69
11.91
8.86
7.08
½"
27" X 4"
8
MDM24
24.3
21.00
14.2
10.90
¾"
20" X 5"
11
MDM49
49.6
35.40
26.6
21.50
¾"
27" X 5"
14
MDM66
66.6
57.00
36.2
26.60
1"
29" X 6"
17
MDM106
106.3
91.60
61.4
46.70
1"
35" X 8"
35
MDM138
138.1
119.30
81.4
62.60
1"
41" X 8"
40
MDS1
1.39
1.20
0.85
0.66
3⁄8"
16" X 4"
8
MDS4
4.55
3.95
2.89
2.29
3⁄8"
20" X 4"
9
MDS9
9.47
8.15
5.69
4.37
½"
24" X 4"
10
MDS13
13.69
11.91
8.86
7.08
½"
32" X 4"
11
MDS24
24.3
21.00
14.2
10.90
¾"
25" X 5"
14
MDS49
49.6
35.40
26.6
21.50
¾"
32" X 5"
17
MDS66
66.6
57.00
36.2
26.60
1"
33" X 6"
20
MDS106
106.3
91.60
61.4
46.70
1"
38" X 8"
40
MDS138
138.1
119.30
81.4
62.60
1"
44" X 8"
45
MDS models feature a digital purge control which eliminates the waste of sweep air to save energy
MD Series Features:
  • • Dew points to -40°F
  • • Inside-to-outside permeation for greater efficiency
  • • Helically wound bundles for low pressure drop, high flow capacity
  • • Compact design offers a space-saving point-of-use solution
  • • Internal and external epoxy powder coat offers durable protection
  • • Modular connections reduce leak points and simplify installation
  • • No oxygen is lost due to proprietary membrane design
SELECTIVE PERMEATION

Through the process of selective permeation, water vapor is removed while leaving the gas composition intact. Each membrane bundle is comprised of multiple tubular membrane fibers, evenly spaced to provide maximum surface area in a compact design. Each helically wrapped layer alternates direction to ensure consistent cross- sectional density and large flow paths for the sweep air that carries the water vapor to atmosphere. No oxygen is lost, which makes these ideal for medical applications.

Options
  • Filter Package - Single Filter Grade 5
  • Filter Package - Two Prefilter Grade 7 & Grade 3
  • BSP connection option - add B to the model number (e.g.. MDM1-3B).
Select a single prefilter package only when the system has existing pre-treatment otherwise, select the dual prefilter package
Prefilter packages include mounting brackets and interconnecting piping. Prefilters include auto drain and differential pressure indicator.

Maintenance Kits
  • FHFMK5-12M - For MDM1, MDM4, MDM9 & MDM13 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK5-24M - For MDM24, MDM49, MDM66 & MDM106 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK5-28M - For MDM138 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK73-12M - For MDM1, MDM4, MDM9 & MDM13 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FHFMK73-24M - For MDM24, MDM49, MDM66 & MDM106 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FHFMK73-28M - For MDM138 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FMDMMK1-II - Replacement Bundles for MDM1
  • FMDMMK2-II - Replacement Bundles for MDM4
  • FMDMMK3-II - Replacement Bundles for MDM9
  • FMDMMK4-II - Replacement Bundles for MDM13
  • FMDMMK5-II - Replacement Bundles for MDM24
  • FMDMMK6-II - Replacement Bundles for MDM49
  • FMDMMK7-II - Replacement Bundles for MDM66
  • FMDMMK8-II - Replacement Bundles for MDM106
  • FMDMMK9-II - Replacement Bundles for MDM138

  • FHFMK5-12M - For MDS1, MDS4, MDS9 & MDS13 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK5-24M - For MDS24, MDS49, MDS66 & MDS106 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK5-28M - For MDS138 -Kit includes: Grade 5 replacement element, one internal replacement automatic drain and a bowl o-ring.
  • FHFMK73-12M - For MDS1, MDS4, MDS9 & MDS13 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FHFMK73-24M - For MDS24, MDS49, MDS66 & MDS106 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FHFMK73-28M - For MDS138 -Kit includes: Grade 7 and Grade 3 replacement elements, two drains and two o-rings.
  • FMDSMK1-II - Replacement Bundles for MDS1
  • FMDSMK2-II - Replacement Bundles for MDS4
  • FMDSMK3-II - Replacement Bundles for MDS9
  • FMDSMK4-II - Replacement Bundles for MDS13
  • FMDSMK5-II - Replacement Bundles for MDS24
  • FMDSMK6-II - Replacement Bundles for MDS49
  • FMDSMK7-II - Replacement Bundles for MDS66
  • FMDSMK8-II - Replacement Bundles for MDS106
  • FMDSMK9-II - Replacement Bundles for MDS138



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