Brass compression fittings

[asihi]

I did a new construction townhome today. At the water heater, instead of finding dielectric fittings at the supply lines, the plumber used brass compression fittings.

Is this type of fitting allowed or is this a new type of fitting? Thanks for your help.

Tony

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[Terence McCann]

Typically the nipples going into the tank are dielectric.

[hausdok]

There's no need to use a dielectric fitting if you're going to use brass between the steel and the copper and I don't think there's going to be any steel-to-copper contact there.

ONE TEAM - ONE FIGHT!!!

Mike

[John Kogel]

I did a new construction townhome today. At the water heater, instead of finding dielectric fittings at the supply lines, the plumber used brass compression fittings.

Is this type of fitting allowed or is this a new type of fitting?

I don't know what the ruling is, but I know I've used those compression fittings on 1/2" copper and they are fine. Better than solder for hooking up a woodstove water jacket.

I don't think I'd trust the new push and twist fittings, but have never used them, either.