Ive always use brass flex connectors on water heaters after reading good things on here and elsewhere Ive been experimenting with the stainless connectors. I love the price and how they are more flexible, however I just installed two on a heater and they whistled when running the water. Like a really loud obvious whistle sound. When I would grab it and put pressure on my flex it would quiet until i let go of it. After playing with it and being unable to get it to quit I went ahead and put a couple of brass one on it. Any thoughts?
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