ALPHA
Compressed Air Filter Range
Exceptional engineering.
Improved performance.
Customer focus.

www.walkerfiltration.com

ALPHA SERIESIntroducing the New Alpha Series, Walker Filtration’s mostadvanced filter to dateWhere engineering excellence
meets innovative filtration design

To our customers, Walker Filtration
stands for innovation, quality andexceptional customer service.
Our promise is to provide high performing, energy efficientand cost effective compressed air filtration solutions thatmeet the exacting standards set out in ISO 8573-1: 2010.
Our commitment to exceptional design, along with aproven track record of engineering excellence, has allowed
us to remain at the forefront of compressed air and gas
filtration and drying. We understand that our long-term
success depends on our ability to deliver product of
exceptional quality and continuously innovate,www.walkerfiltration.com

which is why our clients and customers have put theircomplete trust in our product for over 30 years.
Central to our business is providing tailored solutions to ourcustomers’ challenging compressed air and gas problems
worldwide.
As partners of choice we work hard to understand ourcustomer needs. Whether our customers require highquality, reliable and economical replacement elements,
or a unique custom built solution tailored to their needs.

Walker Filtration delivers the ultimate
filtration and drying solution every time.

Walker Filtration’s New Alpha
Series is market leading in theindustry today.

housings available. Walker Filtration’s Design
Engineers set out to create a forward thinking
product range that is as dynamic as theapplications they are used in.

With energy efficiency and low total cost ofownership at the very forefront of the design,
the New Alpha surpasses its predecessors andconventional filters in the market place, proving
to be Walker Filtration’s most advanced filter yet.

With a range that incorporates Water Separators,
Particulate Filters, Coalescing Filters, and Vapour
Filters, all of which are available in a wide
range of port sizes suitable for installationworldwide, they have done just that.

The expertly engineered all New Alpha Series
not only achieves the highest air purity standards
in line with ISO 8573-1: 2010, it also incorporates
the latest in filtration technology. The newfilter housing has been redesigned to reduce
differential pressure loss which, when combinedwith the new element design, significantly
improves air flow and performance, making the
New Alpha one of the most energy efficient filter

Flow-Optimised Design

Increased Performance

NEW Filtration Technology

Improved air flow
characteristics

Significantly reduced
differential pressure<125 mbar

NEW deep pleated media

Reduced energy consumption
Reduced cost of ownership

Up to 20.7 barg (300 psig)
maximum working pressure
Exceptional oil aerosol andparticulate removal

NEW housing design for
flexible installation andsimplified serviceability
NEW externallyaccessible drain

The ultimate filtration & drying technology

3Introducing the New Alpha.
The Ultimate in Filtration Performance.
The New Alpha Series provides a comprehensive range that
protects downstream equipment from contaminants found incompressed air. With a maximum operating temperature of up to
120 °C (248 °F), and improved maximum operating pressures of up
to 20.7 barg, meaning that whatever your filtration requirement,
we have a solution.

Features & Benefits
Flexible Installation
Available in 1/8” to 3” threaded Rp(BSP Parallel), Rc (BSP Taper) or NPT
port sizes, with flow rates of 6 – 1500
scfm (10 – 2550 Nm³/h). Maximum
temperature 120°C (248°F) andmaximum operating pressure of up to
20.7 barg (300 psig), dependent upon
filter model configuration.
Modular Filter
Low cost connecting kits and new
filter head design enables easy andsimple close coupling assembly toaccommodate a wide range ofapplication requirements.
Flow-optimised Design
Advanced filter design to optimise
flow capabilities, significantly reducing
differential pressure loss and therefore
increasing energy efficiency.

4

www.walkerfiltration.com

Product Safety in Mind
Guaranteed safe housing closure
with single-start thread and fixed
thread engagement stop to prevent
over tightening. Lock indication
arrows assure effective sealing.
Reliable Filtration Performance
Tested and validated in accordancewith ISO 12500-1 & ISO 8573-1: 2010,
Walker Filtration filter housings andelements are manufactured using only
the highest quality materials toprovide optimum performance andimproved efficiencies.

Colour Coded Elements
Corrosion resistant colour
coded end caps for easy
and accurate filtration grade
identification.

Robust Design & EP Corrosion
Protection
The new range offers corrosion
resistance and salt spray testing to ISO
9227: 2012. Durable and hard wearing
electrophoretic coating on bothinternal and external faces of the filter
housing followed by a tough polyester
powder coating.

Market Leading Performance
Introducing new deep pleated media
technology across New Alphaelements; a step change inperformance, combined with acustom engineered anti re-entrainment
layer for exceptional oil coalescence,
ensures low total cost of ownership.

Simplified Serviceability
Designed with servicing andmaintenance in mind, the new
profiled bowl design and hexagonal
spanner locator coupled with theinternal unique push fit element
ensures a simple, quick and reliable
process.

New Externally Accessible Drain
Unique, externally accessible automatic
drain fitted to Filter models A3052 to
A3303. The drain is supplied as
standard with a plastic drain shieldcover.

Differential Pressure Equipment
Supplied to aid with servicing of filter
elements (except A3011, A3021).

The ultimate filtration & drying technology

5Unrivalled Performance

Available in five filtration grades (25 - 0.01 micron),
New Alpha elements ensure significant energy
savings with guaranteed class leading performance;
X1 and XA grade across the range provide asaturated differential pressure of less than or equal
to 125mbar.

New Filtration technology
Walker Filtration utilises deep pleated media to deliver
market leading filtration performance. The new forward
thinking design delivers exceptional results in both oil
aerosol removal and particulate retention; significantly
reducing differential pressure and energy consumption for
low operational lifetime costs. Engineered to deliver a stepchange in performance, the New Alpha element optimises
filtration efficiencies and produces compressed

air in line with the highest standards of air purity, meetingthe quality classes specified in ISO 8573-1: 2010.
To ensure optimal performance and low cost is maintained,
Alpha filter elements should be replaced with Walker
Filtration original parts every 12 months/8000 hours(whichever comes first). Activated carbon filter elements
should be replaced at least every 6 months.

Features & Benefits
Push Fit Walker Filtration Elements ensure
perfect sealing within the filter housing andassist with easy removal
Corrosion resistant end caps Injection
moulded from glass filled nylon for added
durability
Full traceability is provided by ink jetmarking manufacturing batch codes on every
filter element complying with our ISO 9001
manufacturing process
High quality stainless steel cylinders
provide corrosion resistance and deliver
strength and stability to the element
Custom engineered Hydrophobic &Oleophobic Borosilicate media specificallydeveloped to deliver consistently low pressure
drop, combined with pleated element
construction for high dirt holding capacity
and an increased filtration surface area
Custom outer drainage layer prevents oil
carryover and improves coalescence
performance
Unique Walker Filtration Element end
cap colour coding system for quick and simple
grade identification
6

www.walkerfiltration.com

Performance Assured

For more than 30 Years, Walker Filtration has built a
reputation of high quality, well-engineered filtration anddrying products. Founded on sound engineering principles,
we continually invest in technology and expertise to stayat the leading edge of innovation. It is this investment,
combined with the extensive knowledge of our engineeringand technical team, which has allowed us to achieve

the dramatic improvements in performance that our
New Alpha Series delivers.
The New Alpha’s optimised performance has been
extensively proven throughout the research anddevelopment phase using our in house test facilities,
finite element analysis and computational fluid dynamics.

Filter Housing Design
The ISO 8573 group of International Standards is used for the classification ofcompressed air.
1000 hour neutral salt spray test for corrosion to ISO 9227: 2006
Burst pressure tested in excess of 100 barg for a 5:1 safety factor
Housings are pressure decay tested before despatch. Fine filters are 100%
aerosol integrity tested

Element Technology
The New Alpha Series is available in a complete range of contaminant removal
grades designed to meet the compressed air purity requirements throughout
industry.
ISO 8573-1: 2010 – Compressed air purity standard
ISO 12500 Series – International standard for compressed air filter testing

Independent Validation
Walker Filtration’s filter housings are approved to international standards
including:.
Pressure Equipment Directive 2014/68/EU
Lloyd’s Register EMEA – Notified Body No. 0038
71 Fenchurch Street, London, EC3M 4BS
ISO 9001 Quality Systems – LRQ0930553
Lloyd’s Register EMEA – Notified Body No. 0038
1 Trinity Park, Bickenhill Lane, Birmingham, B37 7ES, United Kingdom
CRN Approved – CRN0E19418
For use within Canada

The ultimate filtration & drying technology

7Extensive Filter Range

The new range of threaded filters is available from 1/8” to 3” with flow
rates from 6 – 1500 scfm (10 – 2550 Nm³/hr) with a maximum operatingpressure of 20.7 barg (300 psig).
With the New Alpha Series Walker Filtration have designed the productrange to provide the greatest flexibility and best in class performance.
The Alpha Series includes single and duplex filters, fabricated filter
housings, and a comprehensive range of elements suitable for a wide
range of applications.

Water Separators
The New Alpha Water Separator combines
proven Alpha centrifugal technology
with a new forward thinking housing
design to deliver market leading water
removal efficiencies – eliminating 99%
bulk water and guaranteeing continuously
low differential pressure.
Compressed Air & Gas Filters
Our range of single and duplex air andgas filters come in five filtration grades(Activated Carbon and 25 to 0.01 micron),with silicone free options and specialist
LABSfrei and ATEX capability.

Medical Sterile
This specialist range of filters is designed
to meet the very specific needs for medical
compressed air plants.

New PRO XF Flanged Filters
Modular filtration concept which
can be easily multi-banked
together – ideal for larger flows
from 900 – 3000 scfm
(1529 – 5097 Nm³/hr).

Fabricated Flanged Filters
The ideal solution for larger flow
applications, guaranteeing the highest
levels of air quality from 3824 –
15000 scfm (8720 – 25500 Nm³/hr).
Walker Filtration can supply flanged filtersin two formats - PRO XF Flanged Filters
and Conventional Fabricated Vessels.

Dust Filters
Available in all grades, for installations
downstream of regenerative compressed
air and gas dryers.
Vacuum Pump Protection
Our range of filters offer high efficiency
and optimum contaminant removal for
vacuum pump protection.
Vacuum Pump Exhaust
Two types of vacuum pump exhaust filters
are available to remove oil mistfrom oil injected vacuum pumps.

Accessories
To accompany our standard range, we supply a comprehensive rangeof spares and accessories. For more information on accessories please
see Walker Filtration Product Range and Price Guide.

For more information on our full product range, please contact yournearest sales team or visit www.walkerfiltration.com
8

www.walkerfiltration.com

We Provide Solutions forYour Industry

In any compressed air system,
impurities are inevitable. Dust, dirt,
water and oil contaminants can
reduce air quality and significantly
affect system efficiency.
Inadequate or incorrect filtration
can negatively impact performanceand end-use equipment, and cause

potential costly system downtime.
With over 30 years’ experience
Walker Filtration has built up extensive
industry know-how that supports
our customers with tailored solutions
to meet the varying demands andstandards required by industries indelivering high performancecompressed air.

With enhanced housing features andmarket leading element performance
the New Alpha Series offers acomprehensive range of productsthat deliver up to 99.999% filtration
efficiencies for particulates as small
as 0.01 microns.

General Industry

Vacuum Packaging

Food Production

Paint Spraying

Beverage & Breweries

Laboratories

Power Generation

Automotive

Military

Welding

MedicalElectronics

The ultimate filtration & drying technology

9Tailored Solutions for
OEM Customers

At Walker Filtration, we are proud of our exceptional
in-house design capabilities offering customised solutions
that meet exacting standard set by our customers.

We have designed, developed anddelivered many unique and successful
OEM products to industry leadersacross the world.

CONSULTATION& DEVELOPMENTTESTING &APPROVALIntelligent Branding
We work with OEM customers to provide options tocustomise and brand products and packaging, along witha range of supporting marketing materials, to achieve
maximum brand identity and recognition. All aspects ofthe product are considered, including language support,
unique part numbers and transport details.

10

www.walkerfiltration.com

With the expertise of our dedicated design team,and supported by our manufacturing capability thatallows flexibility to support customers with complex
requirements. We work in complete collaboration with
our OEM customers from initial concept designs andengineering, through testing and validation, to branding
and aftermarket support. Our focus and dedication isstraightforward – we enjoy working with our customers,
offering competent advice and sound engineering,to help achieve the specific solutions required.

MANUFACTURE& DELIVERY

Performance and Validation
For complete peace of mind our OEM developments
are extensively tested to the highest standards; assuring
complete product quality and performance. Throughout
the entire process, excellent levels of customer service areat the heart of everything we do.

Technical Specification
Dimension (mm)Duplex Filters

Coalescing & Particulate

Water Separators

Flow Rate
Filter
Model

Pipe
Size

Nm³/h

SCFM

A

B

C

D

Weight(KG)
Approx.

Element
Model

A3011 WS
A3021 WS
A3022 WS
A3031 WS
A3051 WS
A3052 WS
A3071 WS
A3101 WS
A3122 WS
A3151 WS
A3201 WS
A3251 WS
A3301 WS
A3011 (grade)
A3021 (grade)
A3022 (grade)
A3031 (grade)
A3051 (grade)
A3052 (grade)
A3071 (grade)
A3101 (grade)
A3072 (grade)
A3102 (grade)
A3122 (grade)
A3151 (grade)
A3201 (grade)
A3202 (grade)
A3251 (grade)
A3301 (grade)
A3302 (grade)
A3303 (grade)
D3028 XAC
D3038 XAC
D3058 XAC
D3059 XAC
D3078 XAC
D3079 XAC

/8
1
/4
1
/4
3
/8
1
/2
1
/2
3
/4
1
11/4
11/2
2
21/2
3
1
/8
1
/4
1
/4
3
/8
1
/2
1
/2
3
/4
1
3
/4
1
11/4
11/2
2
2
21/2
3
3
3
1
/4
3
/8
1
/2
1
/2
3
/4
3
/4

10
25
42
59
85
119
212
297
476
680
1189
1444
2550
10
25
42
54
85
119
144
178
212
297
476
680
765
1189
1444
1529
2125
2550
42
54
85
119
144
212

6
15
25
35
50
70
125
175
280
400
700
850
1500
6
15
25
32
50
70
85
105
125
175
280
400
450
700
850
900
1250
1500
25
32
50
70
85
125

50
50
70
70
70
127
127
127
170
170
170
220
220
50
50
70
70
70
127
127
127
127
127
170
170
170
170
220
220
220
220
70
70
70
100
100
100

17
17
24
24
24
32
32
32
53
53
53
70
70
17
17
24
24
24
32
32
32
32
32
53
53
53
53
70
70
70
70
199
199
199
236
236
356

157
157
231
231
231
285
285
285
508
508
508
450
450
157
157
231
231
231
285
285
285
371
371
508
508
508
708
736
736
857
1005
204
204
204
240
240
360

60
60
70
70
70
80
80
80
100
100
100
100
100
60
60
70
70
70
80
80
80
80
80
100
100
100
100
100
100
100
100
70
70
70
80
80
80

0.25
0.25
0.6
0.6
0.6
1.7
1.7
1.7
4.9
4.9
4.9
8
8
0.25
0.25
0.6
0.6
0.6
1.7
1.7
1.7
2
2
4.9
4.9
4.9
5.5
10.5
10.5
11.5
12.5
1
1
1.1
2.3
2.3
3.1

N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
E30306 (grade)
E30306 (grade)
E30408 (grade)
E30408 (grade)
E30412 (grade)
E30612 (grade)
E30612 (grade)
E30612 (grade)
E30621 (grade)
E30621 (grade)
E30831 (grade)
E30831 (grade)
E30831 (grade)
E30850 (grade)
E31140 (grade)
E31140 (grade)
E31160 (grade)
E31175 (grade)
E30408 DXA / DAC
E30408 DXA / DAC
E30412 DXA / DAC
E30613 DXA / DAC
E30613 DXA / DAC
E30625 DXA / DAC

D3109 XAC

1

297

175

100

356

360

80

3.2

E30625 DXA / DAC

1

A

B

A

B

C

C

28mm
approx.

D

42mm
approx.

D

A3011WS to A3051WS A3052WS to A3301WS

A

B

A

B

C

42mm

C

28mm
approx.

D

28mm
approx.

D

A3011 to A3021

A3022 to A3051

A

AA

B

71mm

B
C
C

42mm
approx.

D

D

A3052 to A3303

X25

XA

AC

X25

X5

X1

XA

AC

5 micron

1 micron

0.01 micron

0.01 micron

-

4

3

1

1

Maximum particle size class
to ISO 8573-1: 2010.

Maximum oil content
Maximum oil carryover at 20°C (68°F)

X1

D3028 to D3109

25 micron

Grade
Particle removal*

X5

28mm
approx.

-

4

3

1

1

10 mg/m3

5 mg/m3

0.3 mg/m3

0.01 mg/m3

0.003 mg/m3

Pressure loss - clean & dry

30 mbar

0.4 psi

40 mbar

0.6 psi

55 mbar

0.8 psi

85 mbar

1.2 psi

115 mbar

1.7 psiPressure loss - saturated

50 mbar

0.7 psi

75 mbar

1.1 psi

125 mbar

1.8 psi

125 mbar

1.8 psi

N/A

N/A

Pressure loss - element change

12 mths

8000 hrs

12 mths

8000 hrs

12 mths

8000 hrs

12 mths

8000 hrs

at least every 6 mths

Maximum temperature - automatic drain

80°C

176°F

80°C

176°F

80°C

176°F

80°C

176°F

50°C***

Maximum working pressure - automatic drain

16 barg

232 psig

16 barg

232 psig

16 barg

232 psig

16 barg

232 psig

16 barg

232 psig

Maximum temperature - manual drain

120°C

248°F

120°C

248°F

120°C

248°F

120°C

248°F

50°C***

122°F***

Maximum working pressure - manual drain

122°F***

20.7 barg 300 psig 20.7 barg 300 psig 20.7 barg 300 psig 20.7 barg 300 psig 20.7 barg 300 psig

Black

Element end cap colour

Green

Red

Blue

Black

* Particulate filtration grades RX25 (25 micron), RX5 (5 micron), RX1 (1 micron), RXA (0.01 micron), RAC (Activated Carbon) are also available.

Pressure correction factors
For maximum flow rate, multiply model flow rate by the correction factor corresponding to the minimum operating pressure
Operating pressure barg (psig)

4 (58)

5 (72)

6 (87)

7 (100)8 (115)10 (145)

12 (174)

14 (203)16 (232)

20 (290)

7 barg – correction factor

0.76

0.84

0.92

1.00

1.07

1.19

1.31

1.41

1.51

1.6

The ultimate filtration & drying technology

11Tel: +39.02.84240894 | Mob: +39.345.3673328 | Fax: +39.02.84240893 | Email: info@easyfiltration.it

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WFL1012 Rev-B-UK 1017

For more information please contact our distributor:
Easy Filtration

Walker Filtration Ltd
WalkerLtd
BirtleyFiltration
Road, Washington,
Birtley
Washington,
TyneRoad,& Wear,
NE38 9DA, UK
Tyne
Wear,
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faxemail+44 sales@walkerfiltration.co.uk(0) 191 415 3748
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Walker Filtration Inc.
Walker
Filtration
Inc.
4748 PacificAvenue4748
AvenueErie,PacificPA 16506,
USA
Erie,
USA
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814 8362900
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Walker Filtration Pty Ltd
Walker
Pty Ltd
16-18Filtration
Lindon Court,
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Tullamarine
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Tullamarine
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Walker Filtration Ltd Japan
Walker
FiltrationBuilding,
Ltd Japan
Hulic Gaienmae
2nd Floor
Hulic
Gaienmae
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