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I read through several postings that spoke of testing an eductor and it's impact on improving the mixing inthe water heater processors. SO here is a simple one I can up with usig parts from the local hardware store that will fit directly into a water heater.

Parts used are

3/4" MNPT to 1/2" copper
3/4" FNPT to 1/2" copper
20" 1/2" copper line
1/2" copper to 1/4" FNPT
1/4" MNPT-1/8" FNPT
1/8" NPT Brass nipple (.25" ID)
Total cost about $15

Note: YOu need to grind off the internal stop on the 3/4" MNPT -1/2" copper so you can slide the 1/2" copper line through it.

[Rick]

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