nipple threads


Old 11-11-19, 10:38 AM
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nipple threads

I measured the od threads on the hot water tank out nipple ,Lochnvar 2001, they measured 1.05 inch which I assume is 1 inch OD.. Is that right??? So a premade pex hose fiting would have to be 1 inch also or get a 1 inch to 3/4 inch adaptor and get a 3/4 inch pex hose fitting...yes??
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Old 11-11-19, 11:06 AM
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Pipe is measured on the inside, and it can vary by wall thickness, almost never dead on, but 1.05 happens to be the O.O. of 3/4" pipe so sounds like that's what you have.
Old 11-11-19, 11:12 AM
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If I remember correctly the few water heaters I've worked on all had 3/4" on both the inlet and outlet.

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