Transformer conservators are usually arranged in such a way, that, even at minimum level, the oil is always above the highest point of the transformer lid. Therefore, when a leak occurs in the tank, due for example to a broken bushing, the oil in the conservator pours out, thus considerably increasing the danger of fire and pollution. The automatic conservator oil check valves ETI DAROC Series DS and EDS-R have been designed to prevent the oil contained in the conservator from flowing out when a leak occurs and, for Series EDS-R, to signal this by an electric contact.

ETI- DAROC Tip DS ve Tip EDS-R