Atlas Copco EWD 50 – 16K Condensate Drains

The range of EWD electronically controlled condensate drains is synonymous with safe, dependable and economical condensate management. The intelligent drain function monitors condensate build-up with liquid level sensors and evacuates only when necessary, thus avoiding wastage of compressed air and giving considerable energy savings. 

Scope of Supply

  • Electronically Controlled Condensate Drains
  • Reliable electronic sensor
  • No air loss of compressed air upon draining
  • High energy efficiency

Options (available for the EWD75 and above)

  • Hard-coating for oil-free and aggressive condensate
  • Alarm mode
  • Thermostatically controlled heater
  • Insulating shells

Flow Diagram  

Figure 1: Condensate Enters Drain

Figure 1: Condensate Enters Drain

Figure 2: Condensate Leaves Drain

Figure 2: Condensate Leaves Drain


The working principle

As condensate forms in the system, it is transferred to the EWD drain where it gathers as shown in Figure 1. Once the level of condensate within the drain reaches such that is recognised by the Electronic Sensor, Figure 2, the Outlet Valve opens to allow the condensate to drain from the system. Once the level of condensate reaches that as in Figure 1, the valve closes, leaving some condensate within the drain but most importantly preventing any of the compressed air from escaping.

Control and Monitoring

The draining of the EWD is controlled by a reliable electronic sensor which prevents any loss of compressed air. Monitoring takes the form of an alarm contact which activates in case of failure or a blockage in the drain pipe.


EWD fitted with a reliable for sensor control of evacuation with option of hard-coating and corrosion resistance to increase longevity and reduce maintenance. Insulating shells and thermostatically controlled heaters are available as options to suit the drains to low temperature environments.

Features and Benefits

Feature Benefit
Electronic control No manual operation
Sensor control No compresses air lost
High energy efficiency Reduced energy consumption
Alarm mode Alerts customer to blockages or failure in drain pipe
Hard coating Increased reliability and longevity for harsh condensate management



Atlas Copco’s Aftermarket operation provides complete technical support from each of our eight service centres strategically located throughout the UK and our head office at Hemel Hempstead, Hertfordshire.

Nationwide we have a team of over seventy Atlas Copco trained service engineers, with a wide-ranging knowledge of the compressed air energy, capable of working on both Atlas Copco and other compressor equipment.

We can offer you a variety of serviceplan schemes designed to keep your equipment operating at maximum efficiency 365 days a year, anywhere in the country.

Atlas Copco also provides a full range of genuine spare parts at highly competitive prices. Direct production links to our head office production facility ensures a parts supply to meet the most demanding needs of any service agreement.