Dielectric nipples vs. heat traps.


Dielectric nipples vs. heat traps.
A pair of plain old dielectric nipples for the electric water heater are 4 dollars. With heat traps, which I gather are just little rubber flaps inside, they are 8 dollars.
Why do they still sell the simpler ones, just because people want to save 4 dollars?
I don't remember what I used 13 years ago. If you recommend the ones without the heat traps, and that's what I used 13 years ago, can I just use the same ones that are in there now?
Thanks a lot. This is such a little thing, I hardly believe it is so confusing to me.
BTW, I'm replacing the WH where water sprayed around the escutcheon of the drain valve. I couldn't easily tell where the water was coming from, and it's a 12 year water heater that is between 11 and 15 years old, and I decided to replace it. I've been taking showering at a neighbor's and taking sponge baths.
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the plain dieelectric connections are for isolating dis similiar metal water lines.
like connect copper to galvanized directly, you will get a leak sooner or later, the metal erodes away.
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