Atlas Copco Compressed air filtersDD/DDp/PD/QD series

TOTALQUALITY AIR

PACKAGE

You need pure compressed air

If compressed air is the energy

source behind your produc-

tion, you depend on its eco-

nomic and efficient operation.

With as many as 140 million par-ticles of dirt in every cubic metre of

air, pollution in industrial areas is a

major hazard for any compressed air

system. Up to 80 % of these particles

are smaller than two microns and can

pass straight through the compressor

into the compressed air distribution

system.

These particles, mixed with wa-ter vapour and hydrocarbon vapours

from unburnt fuels and industrial

processes, are drawn into the com-

pressor and concentrated under com-

pression.

After compression, all these con-taminants can combine in the piping

system with condensed moisture,

pipe scale and rust, creating a damag-

ing abrasive emulsion.

Instruments and tools can mal-function, spray guns and pneumatic

components can be rendered unus-

able, maintenance costs will increase

and end products will be spoiled.

The best answer to this is a per-fectly matched filter system, which

reduces all types of contamination

right from the source.

Fume Dust

Mist SpraySiltSilt Fine sand

Smog Cloud and fog Mist DrizzleRosin smoke Fertilizer ground limestoneOil mist Fly ashTobacco smoke Coal dustMetallurgical dusts and fumes

Ammonium chloride Cement dustFume Sulphuric Beach sand

Concentrator mistPulverized coal

Zinc oxide fume Insecticide dustsColloidal

silica Ground talcSpray dried milk Plant

sporesAlkali fume Pollens

0.01 0.1 1 10 100 microns

To assist in understanding the parameters of filtration, referto this pollution sizing chart. Note that a major contaminant,oil mist, is in the region of 0.01 - 0.8 micron. Yet the smallestparticle the human eye can see is in the order of 50 microns!

Atlas Copco has developed sucha filter system, exactly tailored to

meet the demand for even purer com-

pressed air. It will supply you with

the air treatment products that pro-

vide top-quality compressed air -

pure and dry - according to your indi-

vidual requirements.

Filters from Atlas Copco, the right answer

Filter media

Anti re-entrainment

barrierClean

airContaminated

air

Directinterception

Inertialimpaction

Diffusion/brownianmovement

How they work.

The key to effective filtrationis to optimise the three filtration

mechanisms : direct interception,

inertial impaction and diffusion

(brownian movement).

Complete range to meet yourcompressed air quality needs.

Atlas Copco offers you 4 rangesof filters :

- DD range: coalescing filters for

general purpose protection, removing

liquid water and oil aerosol to 0.1

mg/m (0.1 ppm) and particles down

to 1 micron.

- DDp range: particulate filters

for dust protection, removing parti-

cles down to 1 micron.

- PD range: high efficiency coa-

lescing filters, removing liquid water

and oil aerosol to 0.01 mg/m (0.01

ppm) and particles down to 0.01 mi-

cron.

- QD range: active carbon filter

for removal of oil vapours and hydro-

carbon odours with a maximum re-

maining oil content of 0.003 mg/m

(0.003 ppm) should be installed after

a PD filter.

Sure, safe performance.

Built-in safety features ensure areliable, safe operation. An audible

alarm warns when dismantling is at-

tempted under pressure. A pressure

relief valve allows the unit to be de-

pressurized before dismantling and

also provides a simple check that

the automatic drain is functioning

correctly.

The range of Atlas Copco filters,when used in the right combinations,

can provide clean air from 9 to

7,200 l/s.

Energy cost of pressure drop

40,000

35,000

30,000

25,000

20,000

15,000

10,000

5,000

0

500 l/s

200 l/s

100 l/s

0.1 0.2 0.3 0.4 0.5 bar

kWh

per

year

*

*6,000 hours/year - 7 bar.

Com

pres

sor

capa

city

Easy maintenance.

Atlas Copco DD, DDp and PDfilters are equipped as standard with

a differential pressure indicator or

gauge to allow element replacement

in due time.

You have easy access for quickelement change, by simply unscrew-

ing the filter bowl.

Keep your compressed aircosts down.

Atlas Copcos filters are de-signed to combine maximum con-

taminant removal efficiency with

minimum pressure drop, resulting in

a low energy consumption in your

compressed air system.

Keep in mind, a pressure drop ofjust 0.3 bar (4 psi) will cost you a re-

quired power increase of approxi-

mately 2 %.

Features and benefits

Differential pressure gauge (not re-quired on QD):

- with dual face, allows filter instal-

lation in any position;

- indicates the optimum replace-

ment time;

- sizes 9, 17 and 32 equipped with

pressure differential indicator

(pop-up type);

- voltage-free contact for remote in-

dication (optional).

Die cast aluminium housing (up tosize 520) with epoxy powder paint on

the outside and anodised surface treat-

ment inside prevents corrosion and en-

sures extra long lifetime.

Simple and reliable push on ele-ments for easy and fast replacement with

minimum free space required under the

filter. No tie rod.

Audible alarm gives warning whendismantling attempted under pressure.

Sight glass allows visual check ofliquid collection and drain operation.

Modern and unique head designprovides smooth air flow with minimal

pressure drop.

Automatic drain (not required onDDp and QD) with manual override and

quick coupling connection removes

separated liquid from the filter, allows

filter depressurisation and facilitates

drain connection.

Construction is 100% silicon-free.

1

2

3

4

5

6

7

8

1

2

3

5

7

6

4

8

Filter element

Element designed with large ef-fective filtration surface for mini-

mum pressure drop and long life time

providing reduced operational and

maintenance costs.

Double O-ring and epoxysealed caps prevent the bypass of the

filter media by the compressed air.

High strength stainless steelsupport screens prevent corrosion

contamination.

Filter media of different gradesof borosilicate microfibres, to pro-

vide the right purity of compressed

air according to ISO 8573.1.

Filtration media is impregnatedwith active carbon to remove hydro-

carbon vapours (only QD filters).

Optional equipment.

Together with the filters anumber of optional components are

made available to satisfy your re-

quirements:

Filter connection kits alloweasy mounting of filters inseries, with minimum spacerequired.

Pressure drop indicator withvoltage free contact to giveremote indication of filter re-placement.

Wall mounting kits simpiflywall installation.

Quick coupling for easy con-nection to drain collector oroil-water separator.

1

2

3

4

5

1

5

2

4

3

2

Technical data, selection and sizing

D

3.54

3.54

3.54

4.33

4.33

5.51

5.51

5.51

7.05

8.27

8.27

15.35

17.72

19.66

22.83

29.52

29.13

39.37

9

17

32

44

60

120

150

175

260

390

520

500

900

1200

1800

3000

4800

7200

19

36

68

93

127

254

318

371

551

827

1102

1050

1890

2520

3780

6300

10080

15120

61

61

61

98.5

98.5

105

105

105

121

128

128

159

201

230

273

361

410

485

2.40

2.40

2.40

3.88

3.88

4.13

4.13

4.13

4.76

5.04

5.04

5.88

7.91

9.05

10.75

14.21

16.14

19.09

917324460

120150175260390520

500F900F

1200F1800F3000F4800F7200F

Sizes 9-32

Sizes 44-520

A B C EWeightConnec-

tionsG or NPT

Capacity*Dimensions

90

90

90

110

110

140

140

140

179

210

210

390

450

500

580

750

740

1000

* Referred to 7 bar(e) / 102 psig Maximum pressure : 16 bar(e) / 232 psiMaximum air inlet temperature : DD/DDp/PD : 66 C (150 F) QD : 35 C (95 F)

3/8

1/2

1/2

1

1

11/2

11/2

11/2

21/2

3

3

NW80

NW100

NW100

NW150

NW200

NW250

NW300

268

268

323

374

414

520

603

603

689

791

961

1057

1120

1200

1274

1498

1662

1755

Flan

ged

rang

eP

orte

d ra

nge

Filtertype

l/s cfm

75

75

75

75

75

100

100

100

150

200

200

650

650

650

650

650

800

850

2.95

2.95

2.95

2.95

2.95

3.94

3.94

3.94

5.91

7.87

7.87

25.59

25.59

25.59

25.59

25.59

31.50

33.46

-

-

-

-

-

-

-

-

-

-

-

335

335

335

335

335

335

335

10.55

10.55

12.72

14.72

16.30

20.47

23.74

23.74

27.13

31.14

37.83

41.61

44.09

47.24

50.16

58.98

65.43

69.09

mm in mm in mm in mm in mm in kg lb

-

-

-

-

-

-

-

-

-

-

-

13.19

13.19

13.19

13.19

13.19

13.19

13.19

1

1.1

1.3

1.9

2.1

4.2

4.5

4.6

6.9

11

12.6

65

94

134

177

368

507

675

2.2

2.4

2.9

4.2

4.6

9.3

9.9

10.1

15.2

24.2

27.8

143.3

207.2

295.9

390.2

811.3

1118

1488

Filtration performance (at 20 C)DD : oil down to 0.1 mg/m3 particles down to 1 micronDDp : particles down to 1 micronPD : oil down to 0.01 mg/m3 particles down to 0.01 micronQD : oil down to 0.003 mg/m3

Initial pressure drop (dry)

Initial pressure drop (wet)

DD

0.05

0.12

DDp

0.05

*

PD

0.08

0.2

QD

0.07

*

For other compressed air inlet pressures, multiply the filter capacity by the following correction factors

Inlet pressure

Correction factor

bar

psi

2

29

0.53

4

58

0.75

6

87

0.92

7

102

1

8

116

1.06

10

145

1.2

12

174

1.31

14

203

1.41

16

232

1.5

A A

A

B B

B

CC

C

D

D

Sizes 500F-7200FE

D

* not applicable

Select the right quality of compressed airfor your system requirements

General purpose protection and reduced oilconcentration.

General purpose protection.Air quality to ISO 8573-1 : Class 2.-.3.

Air quality to ISO 8573-1 : Class 1.1.1 and 1.2.1.Pressure dew point -70C to -40C.

High quality air with extremely low dew point.

Air quality to ISO 8573-1 : Class 1.4.1.Pressure dew point +3C.

High quality air with reduced dew point.

The ISO 8573-1 quality classes

123456

0.010.11.05.025-

For example: compressed air to quality class 2.2.2.(dirt: 1 micron and 1 mg/m3, water: -40C pdp, oil: 0.1 mg/m)

Compressor withaftercooler

Compressor withaftercooler

Qualityclass

Oilmax. concen-tration mg/m3

max. concen-tration mg/m3

Dirt

0.1158

10-

max. pressuredew point (C)

Water

-70-40-20+3+7

+10

particle sizein m

0.115

1540-

Air quality to ISO 8573-1 : Class 1.4.1.

DDfilter

DDfilter

PDfilter

QDfilter (for critical

applications)

FDrefrigerant dryer

PDfilter

DDfilter

DDfilter

PDfilter

DDpfilter

QDfilter (for critical

applications)

Compressor with aftercoolerand integrated refrigerant dryer

Compressor withaftercooler

CDdesiccant dryer

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http://www.atlascopco-compressors.com

What sets Atlas Copco apart as a company is ourconviction that we can only excel in what we do if we

provide the best possible expertise and technology to

really help our customers produce, grow and succeed.

There is a unique way of achieving that - we simplycall it the Atlas Copco way. It builds on interaction, on

long-term relationships and involvement in the customers

process, needs and objectives. It means having the

flexibility to adapt to the diverse demands of the people

we cater for.

Its the commitment to our customers business thatdrives our effort towards increasing their productivity

through better solutions. It starts with fully supporting

existing products and continuously doing things better.

But it goes much further, creating advances in technology

through innovation. Not for the sake of technology, but

for the sake of our customers bottom line and peace-of-

mind.

That is how Atlas Copco will strive to remain the firstchoice, to succeed in attracting new business and to main-

tain our position as the industry leader.