Ask Experts Questions for FREE Help !
Ask
    mteslami's Avatar
    mteslami Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 13, 2013, 10:07 AM
    Do we need Dielctric union between brass and stainless steel
    Do we need Dielctric union between copper line and stainless steel valve?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    Feb 13, 2013, 11:09 AM
    308 or 316 SS would not. Most valves are that alloy. The weak link is black iron and you don't have that.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    Feb 13, 2013, 08:34 PM
    I agree with ma. No need for dielectric unions on brass or copper to stainless. However, it really all comes down to what you are doing. Say you are installing a tankless water heater, and the install instructions call for a dielectric union. In this case you will want to install the specific type of union they call for to keep the warranty intact. Other than that, no worries.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Joining black steel to stainless: which dielectric union? [ 21 Answers ]

I am trying to connect black steel pipe to stainless steel pipe and I am wondering what type of dielectric union is appropriate. I have not seen any iron/stainless unions out there and it seems galvanized will lead to corrosion once the coating is removed during threading the parts together. Is an...

Is it necessary to provide a dielectric union between carbon steel and brass [ 1 Answers ]

Have a leak on a stainless steel to stainless steel connection [ 3 Answers ]

I am putting two pieces of stainless steel piping together and have had nothing but leaks- I have tried pipe thread sealer and teflon tape together and separately but still have a big leak problem. Can anyone offer an explanation?

Carbon steel, mild steel and stainless steel [ 2 Answers ]

What is the difference between carbon steel, mild steel and stainless steel ?

Closet flange bolts - brass or stainless steel or other [ 1 Answers ]

For a cast iron closet/toilet flange, should the Johnny bolts used to attach the toilet to the flange be made of brass or stainless steel or other? If brass, will it eventually corrode the cast iron closet/toilet flange?

View more questions Search