Dielectric unions are used to join pipes made from dissimilar metals to avoid electrolysis, which leads to corrosion and pipe failure. This union is made from galvanized steel and lead-free brass. Plumbing codes in all states require the use of dielectric unions when connecting dissimilar metals.

Manufacturer: Mueller
Manufacturer part number: 167-094NL
$12.99
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Mueller 167-094NL Dielectric Union Galvanized Sweat Steel (EA)

$12.99