Brass vs iron fittings with black pipe

Ron Schroeder

Hi Hot Rod,

Not really thinking of going out of my way to use brass or galvanize. Just thinking of when I need a fitting and the iron version is out of stock or not in the truck. When I make a substirute, I like to have a substitute that is at least as good as the "proper" part.

Another use of brass fittings is when you need to make a 1/8" tap for a gauge. You can just solder in a bushing.

Ron

Ron Schroeder

Brass vs. Iron fittings with black pipe.

Hi,

Is there any reason (other than price) to not use brass fittings with black pipe on a closed loop hydronic heating system? Also is there any harm in using galvanized pipe on a closed loop hydronic heating system?

Thanks,

Ron Schroeder

Mike Reavis_2

This is not exactly a direct answer to your question

> Hi,

>

> Is there any reason (other than price) to

> not use brass fittings with black pipe on a

> closed loop hydronic heating system? Also is

> there any harm in using galvanized pipe on a

> closed loop hydronic heating

> system?

>

> Thanks,

>

> Ron Schroeder



however, I have a few rules that make retrofits work.
Conerning steel piping and adapting it, I always use "new steel (black pipe) to old steel" (never copper to old steel directly) Therefore: "new copper to new steel". (I like the black sealer for all fittings)
I Like "Expando" where old steel (especially pipe larger than 1.25 inch) goes to new steel--especially on steam piping.

Copper: Clean the pipe and the fittings, never use female adapters where you can use a coupling and a male adapter.

I never use brass on boiler piping unless it is near the water feed.
Brass is for the front of commercial steam boilers in the District of Columbia (isn't that so, Ron?)

hr

Galvanized pipe

should not be used with hydronic glycols. perhaps not with some of the other hydronic chemicals. Brass fittings should not be a problem. Shop for a good brand. Cheap-o's can have pin holes from time to time.

hot rod

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