Just bought Decor Star TPC11-TB kitchen faucet. In the instructions, it directs you to use Teflon tape on the shut off valve before installing the water supply lines. However, it says to thread in the counter-clockwise direction. Everything I’ve read says clockwise direction, starting from the top, so that you follow the threads. Perhaps the instructions say counter-clockwise because they want you to start from the bottom?
Plumbing – Should I thread tape counter-clockwise on kitchen sink shut off valve
faucetkitchen-sinkplumbingplumbing-fixture
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Best Answer
TPFE tape is wound around pipe threads in the same direction that the coupling nut is twisted when tightening. For the illustrated pipe, that would be clockwise. If the pipe were pointing down, but you were looking from above, counterclockwise.
If you wrap it in the direction opposite the nut-tightening direction, the nut will unwind it, it will bunch up and prevent a good seal.