Plumbing & Pipe Repair Diagnostics

What is a 'Dielectric Union' fitting used for in plumbing water heater connections?

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 Correct IncorrectIt electrically isolates copper pipe from galvanized steel pipe with an internal insulating gasket or washer, reducing galvanic corrosion between dissimilar metals.

What is a 'Dielectric Union' fitting used for in plumbing water heater connections?

• It converts hot water to mineral water
• It acts as an automatic freeze relief valve
• It uses an insulating barrier to prevent galvanic corrosion between dissimilar copper and steel metals
• It amplifies household water pressure