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WSD SERIES

Water droplet filtration for compressed air systems

Are you looking for a water droplet filtration for your compressed air system to protect it from water droplets? Then Atlas Copco has the perfect solution for you – the WSD water separator.

Water droplet filtration for compressed air systems

Key technical specifications

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Description

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-filtration

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. 

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.

Talk to our experts to know more

Air quality requirements

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 -

Air contaminants

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
Wet dust
Oil vapor

Dry dust

Micro organism

Oil aerosol

Wet dust

Oil vapor

Water drops

Benefits

Technical benefits

Centrifugal water separation
Eliminates liquid water droplets
Reduces energy cost
WSD filter

Specifications

WSD series: Sizing

Type Capacity range Maximum working pressure Connections
  l/s cfm bar(e) psi inlet/outlet
WSD 25 Jul-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*

Designs

Threaded design

 Threaded design filter

Tower design

Tower design filter

Flanged design

Flanged design filter

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 SFA
High-pressure 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

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