Can you use galvanized pipe in a hot water heating system ?


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Old 09-07-06, 10:43 AM
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Can you use galvanized pipe in a hot water heating system ?

Can you use galvanized pipes in a hot water heating system ?

I heard galvanized pipe can release ions (or something like that) that cause joint corrosion over time in a closed hot water heating system. Also heard galvanized is okay for free flowing water supply pipes but bad for closed hot water heating systems. Apparently, the water enclosed in the pipes loses oxygen (?) and causes problems.

I felt galvanized pipe would last longer than black pipe.

FYI: Likely copper pipe is best but I am more comfortable with steel pipe. Live and learn !

Thanks.

Steve
 
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Old 09-07-06, 02:06 PM
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Pipe

Black steel is the prefered pipe material, followed by copper. Galvanized should not be used.
 
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Old 09-08-06, 11:20 AM
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Galvanized Pipes in a Hot Water Heating System.

Grady,

Thanks.

What are the reasons why galvanized pipe should not be used in a hot water heating system ?

Steve
 
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Old 09-08-06, 03:46 PM
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Galvanized pipe

The galvanizing can flake off & get stuck in zone valves, circulators, flow checks, etc. You NEVER want to join galvanized to copper unless you use a brass or cast iron coupling because the galvanized & copper will react with each other usually causing a leak in the copper.
 
 

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