The dissimilar metals react when they touch in the water lines. The dielectric unions stop the corrosion at the connection.
The reaction
The copper and the steel react together in the water. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the reaction is the corrosion.
The union
A dielectric union separates the two metals with the insulator. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the union is the guard.
The water heater
The heater's steel fittings meet the copper lines at the top. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the heater is the spot.
The galvanized
The galvanized to the copper transitions need the protection. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the transition is the spot.
The leak
The electrolysis at the connection causes the leaks over the time. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the leak is the sign.
The install
The dielectric fittings install at the metal transitions. mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines In National City, the install is the fix.
The call
Dielectric help? Call 888-217-3585 and National City Plumbing Pros will match you with a National City pro for the install.
Plumbing in National City: what to know
In National City, mineral-rich water varies by region, and older neighborhoods still run on aging galvanized or copper lines. Pros in our network know the local quirks and bring the right parts on the first visit.
Across San Diego County — from Coronado, Chula Vista and Lemon Grove to ZIP codes like 91950, 92136, 92113 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.
Need a hand in National City?
If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and National City Plumbing Pros will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in National City.