Reliable condensate drainage without pressure loss

ECO DRAIN condensate drains ensure safe, reliable condensate drainage without air loss, even under conditions with widely fluctuating accumulation and high particle / oil content.

How the ECO DRAIN works

The condensate passes through the condensate inlet into the collection chamber. The level sensor detects the presence of condensate and sends a signal to the drain’s control system when a pre-set condensate level is reached. This opens the solenoid valve and also therefore the pressure balance line. The resulting pressure equalisation causes the valve diaphragm to open and the condensate subsequently flows from the collection chamber via the discharge line to exit the drain. The drain’s control system then closes the solenoid valve as soon as the minimum condensate level is reached in the collection chamber. This causes a change in the pressure exerted on the diaphragm which in turn is re-closed and sealed via the spring.


Level sensor

The non-wearing level sensor forms the basis for safe, reliable condensate drainage. The drain also works perfectly under conditions with high levels of contamination, even when filled with pure oil.

Intelligent control electronics

The control electronics operate the discharge valve with such precision that all collected condensate is discharged without any loss of compressed air. This not only maximises compressed air use but also leads to considerable energy savings. All electrical components are protected from water ingress (IP 65, ECO DRAIN 30/31: IP54).


Should an alarm situation occur (e.g. a blocked discharge line), the unit waits 60 seconds before switching to alarm mode which then allows operation on a timer basis. A flashing LED indicates the alarm and a volt-free contact enables alarm signals to be sent to a control centre or compressor controller (from ECO DRAIN 31).

“Click” and go

Maintenance on the ECO DRAIN 30 and 31 couldn’t be quicker or easier. A simple “click” is all that’s needed to detach the service unit from the electronics module. Complicated disassembly is therefore not required to carry out maintenance work on these units.