Sealing Steel Pipes

Adrien Tanguay

Good Morning,

My friend and I are replacing my hot water boiler and we are having a problem with the steel pipe fittings and dielectric unions leaking when the system comes up to full heat and around 15 PSI pressure. We used pipe dope on all joints but it seems to be bubble through. Also, the rubber gaskets seem to be leaking on one of the unions.

Any advise?

Thank you! Adrien

hr

Get rid of

the dielectric unions and use female or male copper adapters.

Dielectrics have no place in closed loop hydronic systems. They really can't take the heat!

hot rod

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Al Letellier_9

leaks

Ditto on the unions. Also use both teflon and pipe dope on the threads. Just a couple of wraps wtih tape and a good quality dope willmake your leaks go away.

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jeff_51

and make sure the threads are clean

use a wire brush on em, that's where my old fitting brushes get used. That's pipe and fittings