The battery tank I received came with documentation that the inlet/outlet connection was 3/4 MNPT. Firstly, this is not a conical pipe thread, but a straight one. Second, and the real hurdle, is that the thread pitch diameter is much larger than the tolerance. Its size should be 0.982 inch / 0.987 inch. It actually reads 1000 inches, making the thread completely unusable. Connection fitting lowers after 1/4 turn. I will definitely return it.
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