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Will Oatey "Great Blue" Pipe Joint Compound or Harvey "TFE Paste" work as a dissimilar metals' anti-galling compound in water distribution systems?
Me | 8/25/2024 | Paul R.

Posted on 08/25/2024 10:12:24 PM PDT by Paul R.

Sometimes one runs into the problem of pipe or hose connectors made of different types of metals needing to be threaded together. This can happen when replacing plumbing in an older home, or, for that matter with garden hoses and fixtures.

There are of course various anti-seize products on the market, and I've used Permatex 80078 to good effect on occasion, but, I rather question if it should be used in potable water situations, or even for hoses out to the ol' garden. Oatey "Great Blue" Pipe Joint Compound or Harvey "TFE Paste" work well as pipe joint compounds, but are not to my knowledge rated for use with, say, brass to other metals threaded connections (to use the garden hose example.) Or, maybe they are???


TOPICS: Food; Gardening; Hobbies; Outdoors
KEYWORDS: antiseize; huh; pipe; plumbing; vanity
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To: Paul R.

“A dielectric union is a special adapter or fitting utilized in the piping systems of various metals to isolate the connection of the dissimilar metals.”

A plumber for over 35 years and I NEVER concerned myself with this issue. I never saw it being an issue.

Rectorseal #5 pipe thread sealant. Is what I ALWAYS used.

https://www.zoro.com/rectorseal-pipe-thread-sealant-96-fl-oz-brush-top-can-no-5-yellow-paste-25551/i/G0877414/?campaignid=21413729702&productid=G0877414&v=&gad_source=4


21 posted on 08/26/2024 8:08:43 AM PDT by faucetman (Just the facts, ma'am, Just the facts )
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To: If You Want It Fixed - Fix It

Depending on what we are talking about, in the plumbing system of a house when connect connect two dissimilar metals you always use a dielectric union, at least that’s how we did it back in the day.


22 posted on 08/26/2024 8:23:30 AM PDT by Mastador1
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To: Paul R.

Better than nothing. Silver anti-seize is what we use.


23 posted on 08/26/2024 9:25:02 AM PDT by VTenigma (Conspiracy theory is the new "spoiler alert")
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To: faucetman

As a repair plumber you never noticed the problem of copper and galvanized being together when you were repiping old houses?


24 posted on 08/26/2024 9:29:38 AM PDT by ansel12 ((NATO warrior under Reagan, and RA under Nixon, bemoaning the pro-Russians from Vietnam to Ukraine.))
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