{"id":11888,"date":"2020-04-20T18:50:00","date_gmt":"2020-04-20T18:50:00","guid":{"rendered":"https:\/\/www.beplumbsmart.com\/?p=11888"},"modified":"2023-12-20T17:09:59","modified_gmt":"2023-12-20T23:09:59","slug":"what-is-galvanic-corrosion","status":"publish","type":"post","link":"https:\/\/plumbsmart.com\/what-is-galvanic-corrosion\/","title":{"rendered":"What Is Galvanic Corrosion?"},"content":{"rendered":"\r\n

Let\u2019s talk about galvanic corrosion. There are lots of metals out there that won\u2019t rust on their own, which is great–it allows for the use of copper to carry water in pipes, and it keeps your kid\u2019s aluminum bike from falling apart after they left it out in the rain\u2026 again. But rust is only one type of corrosion, and no metal is completely immune to all types.<\/p>\r\n\r\n\r\n\r\n

Why Is My Garden Hose Stuck to My Faucet?<\/h2>\r\n\r\n\r\n\r\n

The most common type of corrosion encountered by plumbers is called galvanic corrosion. Galvanic corrosion is an electrochemical process that occurs when two dissimilar metals come into electric contact with each other, and the results aren\u2019t pretty.<\/p>\r\n

Ever had a hose stuck on the spigot<\/strong> that just wouldn\u2019t come loose, even with a pipe wrench? You were probably dealing with the results of galvanic corrosion.<\/p>\r\n\r\n\r\n\r\n

Some garden hoses are produced with aluminum fittings at each end. On the surface, this seems like a great idea–aluminum doesn\u2019t rust, so it should last forever! But remember, rust is only one of the types of corrosion that can destroy metals, and thereby parts of your plumbing system.<\/p>\r\n

Hose bibbs<\/a> (outdoor faucets<\/a>)<\/strong> are generally made from brass, which is safe to use in contact with copper because it itself is an alloy of copper and zinc and is therefore not dissimilar. You can buy a garden hose with brass or even plastic connections and do just fine, but beware of aluminum!<\/p>\r\n\r\n\r\n\r\n

A Bad Combination Leads to Galvanic Corrosion<\/h2>\r\n\r\n\r\n\r\n

When you put an aluminum hose connection on a brass bibb, you create a reaction: galvanic corrosion. Neither one of these metals will corrode on its own in contact with water, but when they\u2019re put together, you\u2019re in trouble. The aluminum acts as an anode<\/a>, and the brass acts as a cathode; this creates an electron flow every time the two metals are in contact with an electrolyte–or every time you run water through your hose.<\/p>\r\n

The aluminum will start to literally dissolve, and wherever it\u2019s in direct contact with brass, it will reform itself and fuse to the other metal. Just like that, your hose is stuck–and, if undealt with, it will eventually start to further melt away and leave you with a hose that leaks like a sieve and still won\u2019t come loose.<\/p>\r\n\r\n\r\n\r\n

The moral of the story? Don\u2019t put dissimilar metals in contact with each other–especially not in the presence of water! If you\u2019re in the market for a new hose, make sure you buy one with brass connections at each end–and check the metal on your sprayer, too! If you already have a hose with aluminum fittings, throw it away. And if you can\u2019t get it loose to throw it away, give us a call.<\/p>\r\n\r\n\r\n\r\n

*It does seem like the logical solution to this problem would be to use a wrench, but don\u2019t do it. Outdoor hose faucets may sometimes seem to be solid as a rock, but the fact of the matter is it\u2019s still being held in place mainly by the (relatively soft) copper pipe it\u2019s attached to–and you might as well put that wrench right on the pipe and crank it for all the good it\u2019ll do you.<\/p>\r\n

Schedule a Plumber<\/h2>\r\n

Schedule a plumber<\/a><\/strong> if you need assistance, we are happy to help.\u00a0<\/p>\r\n

Read our reviews<\/a> to learn more about us<\/a> or our plumbing services<\/a>.<\/p>\r\n","protected":false},"excerpt":{"rendered":"

Let\u2019s talk about galvanic corrosion. There are lots of metals out there that won\u2019t rust on their own, which is … Continued<\/a><\/p>\n","protected":false},"author":4,"featured_media":11889,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29],"tags":[31,32],"acf":[],"yoast_head":"\nWhat Is Galvanic Corrosion? Why Is My Hose Stuck? | Plumb Smart, Inc.<\/title>\n<meta name=\"description\" content=\"What Is Galvanic Corrosion?. Plumb Smart offers emergency plumbing, drain cleaning, and sewer inspection services. 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