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Water droplet filtration for compressed air systems

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Centrifugal water separation

Eliminates liquid water droplets

Reduces energy cost

Water droplet filtration for compressed air systems

The build-up of condensed water can pose major problems for your compressed air system. To protect it – and components like your dryers and filters – you need a water separator that effectively removes liquid water aerosols.

And there are no better cyclonic water droplet filters than the WSD series from Atlas Copco. They can be installed at any point in your compressed air system and even come as standard with our aftercoolers.

Know your air quality requirements

Protecting your compressed air system from water condensation build-up is always a good idea. You can find out more useful information about a WSD water separator below.

If you are unsure, and only know that you have to protect your system from water droplets, then you need to first find out your air quality requirements. For some applications, they are much less important than for others, so knowing which ISO standard you have to comply with allows you to pick the ideal equipment for your system and get the most out of your investment.

If you are not sure which ISO standard applies to your operation or which type of contaminant you have to protect your system from, you can contact Atlas Copco or consult the tables below.

WSD water separators

Atlas Copco’s WSD cyclone-based separators effectively remove water aerosols. Made entirely of corrosion-proof material, they increase the reliability of your entire compressed air system. WSD water separators have no moving parts and are essentially maintenance-free. We offer them with an automatic or a manual drain.

Another major benefit of the WSD series, which can be installed at any point of your compressed air system, is that it will reduce your energy costs. Their intelligent drain function monitors condensate build-up with liquid level sensors. It only drains the condensate when required to avoid using compressed air inefficiently.

WSD series: sizing

Type

Capacity range

Maximum working pressure

Connections

 

l/s

cfm

bar(e)

psi

inlet/outlet

WSD 25

7-60

15-127

20

290

G 1

WSD 80

50-150

106-318

20

290

G 1 1⁄2

WSD 250

125-350

265-742

20

290

G 2 1⁄2

WSD 750

300-800

636-1695

20

290

83 mm*

Find the right filter for your application

The table below shows the various ISO 8573-1:2010 air purity classes and the Atlas Copco filters and dryer-combinations that meet these classes.

If you are unsure which ISO class you need but you do know what contaminant you have to protect your system from, then check out the general and special applications tables below. It will provide you with an overview of which Atlas Copco filters are the ideal solution for which contaminant.

Filter applications


ISO 8573-1:2010 class

Solid particles


Water


Oil

(aerosol, liquid, vapor)

Wet conditions

Dry conditions

0

As specified by the customer*

Oil-free compressor


1

DD+ & PD+


DDp+ & PDp+


Desiccant dryer

DD+ & PD+

  &          QD+/QDT

UD+

UD+

  &          QD+/QDT


2


DD+


DDp+


Desiccant dryer, rotary drum dryer

DD+ & PD+

UD+

3

DD+

DDp+

Desiccant dryer, membrane dryer, rotary drum dryer

DD+

4

DD+

DDp+

Membrane dryer, refrigerant dryer

DD+

5

DD+

DDp+

Membrane dryer, refrigerant dryer

-

6

-

-

Membrane dryer, refrigerant dryer

-

Dirt, water and oil are no match for Atlas Copco’s filters. They are designed to remove one or more of the following contaminants:

  • DIRT: dust, solid particles, rust particles, micro-organisms.
  • WATER: condensed liquid water, water aerosols, acidic condensates.
  • OIL: liquid oil, oil aerosol, hydrocarbon vapor.

dry-dust
Dry dust

micro-organism
Micro organism

oil-aerosol
Oil aerosol

wet-dust
Wet dust

oil-vapor
Oil vapor

Water-drops
Water drops

 

Flanged design
Flanged design
Threaded design
Threaded design
Tower design
Tower design
 

General applications

Name

DDp+

PDp+

DD+

PD+

UD+

QD+

QDT+

Grade

Rough

Fine

Rough

Fine

Ultimate

Basic

Optimal

Contaminant

Dry dust

Oil aerosol/wet dust

Oil vapor

Special applications

Name

H

High-pressure

SFA

Silicone-free

Grade

Rough & fine

Rough & fine

Basic

Rough & fine

Rough & fine

Basic

Contaminant Dry dust Oil aerosol/wet dust Oil vapor Dry dust Oil aerosol/wet dust Oil vapor


water separator open


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