DRÄGER Trajan 808 used on trolley, with two bottle holders and space for DEVILBIS O2 concentrator, the trolley is new, since the trolley is not an original Dräger device, the anesthesia device may only be used for veterinary purposes The standard inlet pressure for anaesthesia units is approx. 5 bar. If you would like to operate your device with an oxygen concentrator, we must convert the device to concentrator operation. The costs amount to EUR 89.00. This conversion is only possible for devices used in veterinary medicine.