Metal to Metal connections

What metals can you put together,
brass to copper?
brass to steel?
copper to steel?
I left off PVC to these since that should be ok.

mistress

pipe connections

All The Above If You Use The Right Connections To Tie Them Together With ! ! ! :d

pipes

brass to copper?
brass to steel?
copper to steel?

Is this a variation on rock/scissors/paper? If all of those connections could not be made plumbers would be in real trouble. But they can be made as long as the proper transitions, if necessary, are used.

Dialectric Unions are overrated,

you can tie anything you want together..

it depends on what you are doing.....and how long
you want it to last.

We see hundreds of water heaters with the copper
or brass threaded directly to the steel....

and they usually last a very long time without the use of
dia-electric unions...



also galvanized pipe can be tied directly to
either brass or copper pipe it usually lasts for years and years...

the use of Dialectric unions is way overrated and usually
the Union itself eventually becomes a problem in the system by
corroding shut. We go out and clean out the tops of heaters all the time
where teh Dialectric union has limed itself shut.

So I dont feel that they are necessary....even though they are what
everyone says you are supposed to use. They break contunity and the
grounding properties of the plumbing system.




With cpvc, the only problem we ever see is where someone ties
cpvc directly to the top of a water heater and the joint
becomes brittle over time from expansion and contraction...


doe this answer your question or make you more
confused??

connections

It depends on what you are doing. If it is for air or gas, you can connect them directly. If it is for water, and you are using copper and stell, then you have to provide some method of separating the two, either by a di-electric union, (however they are mostly cosmetic and ineffective in preventing corrosion), or using a material, such a brass, which is intermediate to the two materials on the Nobility Scale, to join them.