connecting brass to steel

Old 01-09-06, 09:10 AM
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Question connecting brass to steel

I'm replacing the backyard sprinkler valves to a house I recently purchased.
The outlet for the old valves are connected to galvanized pipe which
are set in concrete. Somewhere under the concrete, these galvanized pipes
connect to PVC pipe which runs underground in the backyard. I would like
to connect brass sprinkler valves to the galvanized pipe. I know that there
are electrolysis issues when connecting copper to steel. Are there similar
issues when connecting brass to steel? I plan to install a union between
the brass valve and the galvanized pipe. Do I need to use a dielectric
union or can I use a regular union?
Old 01-09-06, 09:22 AM
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Not that I know of. Brass is not a very reactive material.
Old 01-09-06, 09:26 AM
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Brass does not react as bad as copper to steel connections. I would not use the di-electric unless you have to buy a union anyways. Cost is probably not that much different. Good luck.

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