The oil drain Device is produced according to DIN 42551 standard. This valve is installed on the wall of the transformer and is installed to drain the oil in the transformer. These valves are sold in different sizes A22, A31 and A40, which can be seen in the table at the bottom of the site. Note that A22 oil drain valve is for use in 50-630 kVA transformers, A31 oil drain valve is for use in 800-1600 KVA transformers, and A40 valves are for power transformers.

This product generally has 4 general parts. These sections are:

1. brass nut
2. Bushen that is welded to the transformer tank
3. Protective shell
4. Sealing gasket made of Klingrite