Contractor Access offers the best prices, service and delivery on quality Dielectric Unions, supplies, accessories, valves, fittings, pipe, water heater parts and HVAC repair parts. Have they found a way to eliminate the need for dielectric unions, or is the installation picture/instructions wrong?
My home now is similar set up to the old one so I'm trying to figure out if the dielectric union is even needed..
Use dielectric unions water heater. @Matt – I wouldn't use a flexible hose. Screw dielectric nipples into the new water heater. Why do plumbing dielectric unions always fail?
I'm not sure any are rated for that temperature potential. The installation instructions didn't mention use of dielectric junctions when attaching copper tubing to the steel tank's inlet and outlet nipples. The connections are at the water heater – male.
I know the dissimilar… February 2015 in Domestic Hot Water. A dielectric union fitting is one which is often used in water supply lines, and other connections which require an adapter to be placed between two different pipes.The adapter is used to connect pipes of different types together, for example a copper pipe and iron pipe.
Buy Dielectric Unions supplies online and get Free Shipping. As I recall, they insisted we not use di-electric unions on the boiler connections.. I usually install brass nipples with dielectric unions.
The Tank came with 2 dielectric close nipples with no mention in the installation instructions. Last week I got a new hot water heater. I haven't heard about built-in dielectric unions – if that's the case, and your new water heater has them, you should be okay.
Should I put dielectric fittings between the hot water heater and the copper lines? Dielectric unions electrically separate the piping from the hot water tank using a plastic sleeve and rubber gasket. My old tank of 15 years had the copper 3/4 male fitting screwed directly into the top of the tank with no problems.
Purpose of dielectric unions is to prevent galvanic corrosion, which is caused by electrolysis. Water heater hook up/dielectric unions [ 8 Answers ] When I moved into this house the hot water heater (3 years old now, gas unit) was hooked up to the existing system with copper fittings. Otherwise just get a set and put them in.
The whole house has copper supply lines. To further the discussion on dielectric unions, there is a Technical Service Bulletin by Rheem that says dielectric unions on their water heater is not necessay. Is a Dielectric Union Necessary on EVERY water heater?
When should I have to use a dielectric union when install a water heater? I am a licensed plumber for 20 plus years. The best way, in my opinion, is to use stainless nipples with dielectrics.
Brass fittings will not do this. These plastic-lined nipples reduce corrosion and increase water heater life. Get free 2-day shipping on qualified Dielectric Fitting, Water Heater Accessories products or buy Plumbing department products today with Buy Online Pick Up in Store.
You don't have to pay special attention to the water connections if your tank has brass or copper connectors, and the pipes in your house are copper.. How to Install a Dielectric Union on an Electric Water Heater A dielectric union keeps copper pipes and water heater nipples apart. It is installed between pipes made from dissimilar metal.
Brass or dielectric unions for stainless indirect to copper boiler piping. Personally I don't see a dielectric union fitting anywhere in a hydronic system. I see your using dielectric unions on the water heater, and that would be for the water lines to prevent electrolysis.
Note that the unions are NOT at the nipples of the heater. And no mention anywhere of dielectric unions. I have just installed a AO smith gas water heater.
That's with copper water lines, of course. SwimRunPlumb (MI) OK, what is the truth on using dielectric unions on top of water heaters. This article describes the building code and practical requirements for a dielectric fitting when connecting copper piping to steel pipes or steel fittings such as at the top of a water heater.
(dielectric) unions VS brass fittings Dielectric unions and brass fittings are NOT the same thing. However some inspectors still insist on dielectric unions at boiler connections. When I started, it was code to install dielectric unions everywhere in houses where copper connects to steel.
All my water lines are 3/4 inch copper. Used to separate two dissimilar metal pipes (such as copper pipes and galvanized steel). The adapter serves to hold both pipes together, preventing leaking and other kinds of damage.
Actually I don't like dielectric unions on any of the potable water side either. In our new home we moved into went to same store and bought same water heater but now they are saying I need to pay for a dielectric union? Be sure to coat the threads with pipe thread sealant or wrap with Teflon tape.
We offer dielectric unions in a range of configurations, sizes, and materials. HD stocks water heaters in all stores and a dielectric union is a standard item for water heater installation. Dielectric union sizes 1/2" – 1-1/2".
We used to use Munchkin's, and their stainless water heaters. Although HD does stock this union, it doesn't stock the gasket, which after 12 years should be replaced with the new water heater. They're cheap, readily available, and work well.
I don't ever use them, and I have heard they are not necessary because the water heater has dielectric nipples. The nipples on the heater look like normal plated steel nipples.