Dielectric nipple needed?

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Dctrjones

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Hello everyone,

I've been lurking these forums for a while now and am very impressed with the wealth of information presented! Now it's time for me to ask for some advice.

I had a new boiler installed about 4 years ago and recently have noticed one nipple that is starting to rust out. The nipple is between the backflow preventer and what I believe to be a pressure valve. The nipple at the bottom of the pic is connected to the hot pipe coming from the boiler. See the attached pic.

Should I replace this with a dielectric nipple to avoid anymore future corrosion?

What I find interesting is the nipple below the "pressure valve" doesn't show any signs of the similar corrosion.

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Dctrjones

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Thanks for the reply.

Of course it needs to be brass . . . I don't know what I was thinking!

Must have been the previous thread that got me thinking about dielectric fittings.
 
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