Compressed AirDuplex Filters
Models | D3028XAC to D3109XAC
Flow Rates 25 SCFM (42 Nm3/hr) to 175 SCFM (297 Nm3/hr)

The New Alpha Duplex range delivers an economical,
space-saving filtration solution. With exceptionally
improved performance, the intelligent design combines
a two-stage filtration system in a single unit, ensuring
twice the filtration capability.
Available in a range of 7 models with connection sizes ranging from¼” - 1” , the New Alpha Duplex Filters space saving modular design utilises
deep pleated media technology to deliver market leading performance.
The 0.01 micron (DXA grade) element delivers exceptional results in oil aerosol
removal and particle retention - with a significantly reduced differential pressureof <125 mbar. The Activated Carbon (DAC) element utilises a finely divided
activated carbon media to remove odours and tastes.

NEW Filtration Technology

Two-Stage Filtration

Modular Construction

New Alpha deep pleated media
technology delivers a step change
in performance

DXA and DAC elements fordouble the filtration performance

Low cost connecting kits enableeasy close coupling assembly

Flow-Optimised Design Advanced filter head designed for optimised flow performance

Flexible Installation Filter housings can be multi-banked together using connecting kits enabling simple
close coupling assemblyMarket Leading Performance Pleated oleophobic borosilicate media delivers significant energy cost savings
through lower differential pressureSimplified Serviceability Profiled bowl design and unique push fit elements ensure quick and reliable
maintenanceProduct Safety in Mind Guaranteed safe housing closure with rotational safety stop

Corrosion Protection Internal and external electrophoretic paint finish followed by a tough exterior polyester
powder coating

For further information please visit www.walkerfiltration.com

Market leading
differential pressureof <125 mbar across
DXA gradeFor further information please call: +44 (0) 191 417 7816
65mm

65mmmmTechnical Specification

71mm

Filter model
B

AA

Inlet flow rate*

Dimensions mm

Nm³/hr

SCFM

AB

C

D

1/4

422570199

20470

E30408DXA / E30408DAC

1/1

D3038XAC/8543270199

20470

1E30408DXA / E30408DAC

1/1

D3058XAC

C½855070

199

20470

1.1

E30412DXA / E30412DAC

1/1

D3059XAC½1197010023624080

2.3E30613DXA / E30613DAC

1/1

D3078XAC¾1448510023624080

2.3E30613DXA / E30613DAC

1/1¾212125

100

35636080

3.1E30625DXA / E30625DAC

1/1

D142mm297
approx.

175

100

356

360

80

3.2E30625DXA / E30625DAC

1/142mmapprox.

DD3109XAC* Rated flow at 7 barg, reference conditions 1 bar (a) 20oC

AAAGradeDXA

DAC

0.01 micron

0.01 micron

Maximum particle size class**

11Maximum oil content**

1Particle removal

65mmBB71mmMaximum oil carryover at 20°C (68°F)

ABC

85 mbar
125 mbar

1.8 psi

12 months

8000 hours

Maximum working pressure

42mm
D3028XAC - D3058XAC
approx.

N/A

N/A

at least every 6 months

122°F

50°C ***

122°F ***

232 psig

16 barg

232 psig

Blue

Black

*** Maximum Recommended operating temperature 25°C (77°F)

For maximum flow rate, multiply model flow rate by the correction factor corresponding to theminimum operating pressure

28mm
Pressure correction factors
approx.

D

1.1 psi

50°C** To ISO 8573-1:2010

D75 mbar16 barg

Element end cap colour

28mm
approx.

1.2 psiPressure loss: element change

CD0.003 mg/m3

3

Pressure loss: saturated

Maximum temperatureC

10.01 mg/m

Pressure loss: clean and dry

42mm
approx.

13D3079XAC

42mm
A
approx.

Element modelNo.
ActivatedofCarbon
Elements

Weight Element model
Coalescing
Kg

D3028XAC

C

42mm
approx.

Pipe sizeB
inchesOperating pressure barg (psig)

4(58)

5(72)

6(87)

7(100)

8(115)

10(145)12(174)14(203)16(232)

7 barg - correction factor

0.76

0.84

0.9211.07

1.19

1.31

1.41

1.51

AA

Technical notes
BC

WFL1006 Rev-B-UK 1217

28mm
approx.

D28mm
approx.

1.

Duplex Filters provide a 0.01 micron (DXA) grade element in the lower section for oil removal, while the Activated Carbon (DAC)
grade element in the upper section is for odour removal.

2.

Direction of air flow is inside to out through the 0.01 micron (DXA) grade and outside to in through Activated Carbon (DAC) grade
filter element.

3.

Duplex Filters are fitted with ADVS16 normally open float operated automatic drain valves as standard. Normally closed float
operated automatic drain valves ADVS16C are available for low flow applications - see price guide.

4.

Activated Carbon Filters must not operate in oil saturated conditions and will not remove certain types of gases including carbon
monoxide (CO) and carbon dioxide (CO2).

5.

New Alpha Filters are manufactured from cast aluminium alloy and are PED 2014/68/EU compliant for group 2 gases.

6.

Threaded connections are Rp (BSP Parallel) to ISO 7-1 or NPT to ANSI/ASME B1.20.1 if supplied within North America. Rc (BSPTaper) to ISO 7-1 also available.

7.

For NPT threads, add the suffix N, e.g., D3208NXAC, and for Rc threads add the suffix C, e.g. D3208CXAC.

8.

Filters are suitable for use with mineral and synthetic oils plus oil-free compressed air applications.

9.

Mounting brackets are available for all models - see price guide.

For more information please contact our distributor:

D3059XAC - D3109XAC®

C®

Easy Filtration
Tel: +39.02.84240894 | Mob: +39.345.3673328 | Fax: +39.02.84240893 | Email: info@easyfiltration.it®