Medical Sterile
Filters
Models | A3021MS to A3303MS
Flow Rates 15 SCFM (25 Nm³/hr) to 1500 SCFM (2550 Nm³/hr)

When it comes to patient care, quality and reliabilityof compressed air is paramount. Walker Filtration’s
range of New Alpha Medical Sterile Filters guarantees
reliable and outstanding air purity that meets
internationally certified medical performance levels.
100% integrity tested, New Alpha Medical Sterile elements are guaranteed
for a minimum of 100 sterilisations at 120oC (248oF), ensuring yourcompressed air is free from live bacteria and other submicron particles.

Stainless Steel End Caps

100% Integrity Tested

Product Safety in Mind

Specially designed for autoclavesterilisation compatibility

Each element is supplied with
an Air Sterilisation Certificate toguarantee the highest quality toour customers

Lock indication arrows assure
effective sealingInternational Validation Designed to exceed the requirements of HTM 02-01medical gas pipeline systems



Simplified Serviceability Ribbed 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 polyester
powder coatingFlexible Installation Modular design and accessible fixings enable simple close coupling assemblyRobust and Sterilisable Materials Manufactured from cast aluminium alloy for enhanced strength and protection

For further information please visit www.walkerfiltration.com

Designed to exceed
the requirements ofUK Health Technical
Memorandum,
HTM 02-01

For further information please call: +44 (0) 191 417 7816

Technical Specification
Filter model

Pipe size inches

A3021MS¼�
¼3/8½½¾11¼1½222½333A3022MS
A3031MS
A3051MS
A3052MS
A3071MS
A3102MSA3122MS
A3151MS
A3201MS
A3202MS
A3251MS
A3301MS
A3302MS
A3303MS

Inlet flow rate*
Nm³/hrSCFM

ADimensions mmB
CD

Weight Kg

Element model

25

1550

17157

60

0.45

E30306SR

4225

70

24231

700.8

E30408SR

5432

70

24231

700.8

E30408SR

85

507024231

700.8

E30412SR

119

70

127

32285

80

2.1

E30612SR

144

85

127

32285

80

2.1

E30612SR

297

175

127

32371

80

2.4

E30621SR

476

280

170

53508

100

5.4

E30831SR680400170

53508

100

5.6E30831SR

765

450

170

53508

100

5.6E30831SR

1189

700

170

53708

100

6.2

E30850SR

1444

850

220

70

736

100

11.6

E31140SR

1529

900

220

70

736

100

11.6

E31140SR

2125

1250

220

70

857

100

12.6

E31160SR

2550

1500

220

70

1005

100

13.6

E31175SR* Rated flow at 7 barg, reference conditions 1 bar (a) 20°C

SRGradeDOP efficiency**>99.9999%
0.01 micronParticle removal
Maximum operating temperature

120°C

Recommended operating temperature

50°C

248°F

122°F

Maximum autoclave temperature

134°C

273°FPressure Loss - clean & dry

100 mbar

1.5 psiMaximum working pressure

20.7 barg

300 psig

Stainless steel

Element end cap material** As specified in HTM 02-01 medical gas pipeline systems

42mm
42mm

BACC

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

65mm
65mm

Technical notes
71mm
71mm

71mm
71mm

65DPIG

65DPUG3A

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

65mm
65mm

60mm
60mm

BPressure correction factors

ABCBCB

AAA
B

CC

B

C

44mm

28mm
28mm
D approx. approx.
approx.
D D

D

WFL1009 Rev-D-UK 1217

CA

A

B

B

Filter element End Caps are stainless steel.

2.

Direction of air flow is outside to in through the filter element.

3.

Pop up indicators (65DPUG3) are fitted to models A3022 to A3051 as standard. Differential pressure indicators (65DPIG) are fittedto models A3052 to A3303 as standard.

4.

Manual drain valves (MDV25 on models A3021MS to 3051MS and MDVE25 on models A3052MS to A3303MS) are fittedAAA

B B
Aas standard.

5.

Medical Sterile Filter elements must not operate in water or oil saturated conditions.

6.

Maximum steam sterilising autoclave temperature refers to the filter element ONLY. Grade SR filter elements can be steam sterilised
100 times. Each element must be autoclaved before commencement of duty.

7.

Pre-filtration should be used in conjunction with 0.01 micron sterile filters.

8.

Threaded filters are manufactured from cast aluminium alloy and are PED 2014/68/EU compliant for group 2 gases.

9.

Standard threaded connections are Rp (BSP Parallel) to ISO 7-1 or NPT to ANSI/ASME B1.20.1 if supplied within North America.
Rc (BSP Taper) to ISO 7-1 also available - see price guide.

10.

CC

For NPT threads, add the suffix N, e.g., A3052NMS, and for Rc threads add the suffix C, e.g. A3052CMS - see price guide.

42mm
42mm

11. approx.
Filterelements should be changed at least every 6 months.
approx.

D D
42mm 44mm
D 42mm12.
approx.
approx.
approx.

A3022 - A3051
B

1.

42mm
Filters areDsuitablein dryair conditions only, as any liquids passings through the filter could carry bacteria and compromise
D for use42mm
approx.
approx.
sterility.

A3052 - A3303
AAA

A

AA

For more information please contact our distributor:®
Easy Filtration

C®

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

BB

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