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I prefer to use Brass as opposed to nylon or galvanized fittings like the 1+ inch 90's, MIP and nipples. I dont like nylon due to the response on the yard hydrant leaking thread, they do break easily from fatigue. galvanized just corrodes too quick. Brass may be a bit more costly, but lasts so much longer.
I even use brass on expansion tank pressure switch's. Seen too many submersible pumps suspended by a 1-1/2 nylon 90's in the wells.
I even use brass on expansion tank pressure switch's. Seen too many submersible pumps suspended by a 1-1/2 nylon 90's in the wells.