YW series of oil level gauge is a fully sealed transformer's special products. This product is made of high quality seamless steel pipe or alloy aluminum, the appearance of electrostatic spray, sealed and reliable, simple operation, easy installation, shorten the working hours, with a number of functions, which can do tubing connection.

Due to the use of threaded and flange connection, the sealing ring to ensure a reasonable amount of compression, while effectively preventing the UV radiation, the longer life of the apron, observe the window oil level 360 °, at any direction can be observed in the oil Bit of change.
Blue shows the normal oil level, the red shows that the oil level is reduced, should be added transformer oil in time .