What tool is used to tighten a short 1/2” x 1 1/2” nipple that screws into a shower valve behind the wall? Well a nipple extractor work if you turn it in the opposite direction (clockwise )?
Plumbing – What tool is used to tighten a short pipe nipple
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Related Solutions
It's not "backwards" or a "mistake" at all - it's perfectly standard for dual (separate hot/cold control) faucets. In a sink deployment, you pull the outside (away from the faucet) of the handle forward to open, and push it back to close - that requires the hot and cold to close in "different directions" from a clock-wise perspective - which is perfectly natural from a "handedness" direction since the right hand works the cold faucet and the left works the hot one (in the standard arrangement.)
To avoid this standard arrangement, look for one of the minority of companies that thinks all valves should be righty-tighty and buy one of those (there are a few - they seem backward in this application to me.) Or skip the whole business and get a single-handle control.
It's called a center punch.
There are also automatic center punches, which don't require a hammer.
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Best Answer
A coupling and another piece of pipe can be used to tighten a close nipple. You can't grip the threads with a wrench without damaging them. Some nipple extractors only work in one direction, but if the tool is called an "internal pipe wrench" it can work in both directions to tighten or remove a nipple.
Sample internal pipe wrench