What types of valves are used in transformer oil systems?

Transformer oil systems use drain valves, sampling valves, filling valves, radiator isolation valves, conservator valves, and pressure relief devices. These valves are designed to be oil-tight, corrosion-resistant, and safe for maintenance operations. Proper valve selection and sealing are essential to prevent leaks, air ingress, and contamination during sampling, filtration, or oil replacement activities.