u/ToothedProselytism

hiya r/DIY!

I need some advice! recently replaced an old kitchen faucet and swapped it out for a new one. old faucet had copper lines that ran & connected directly to the copper water supplies.

new faucet, however, has the standard 1/2” threads that fit into each hole.. I am having a hard time figuring out the simplest way to connect these 1/2 threads using a 1/2” to 3/8” braided supply line to the old copper pipes.

i am a little overwhelmed with all of the different types of plumbing threads and fittings and connectors LOL so forgive me for not knowing the proper terminology… BUT the pipe itself seems to be 3/8” diameter and fitted with a 1/2” compression nut.

what would be the easiest way to connect these?? an adapter? cut the pipe & use a sharkbite? I tried a 3/8 to 3/8 quick fitting but the male threads were too big to fit into the 3/8” side of the supply hose. also tried a 1/2” to 3/8“ adapter, but the compression nut would slip down and leak.

here are some photos of before and after unscrewing the old faucet, and a diagram to help illustrate my point:

https://imgur.com/a/FtSUyb7

THANK YOU in advance,

Sincerely,

just a girl fixing up her great grandmothers house :)

forgive me for ignorance, this is my first DIY plumbing project on an old 1940s house :)

Replacing a leaky old Delta faucet with a new Moen. the delta had copper pipes with a 1/2” male connector that screwed directly into the 1/2” female compression connector (pictured) that leads to the valve. the new Moen faucet requires a 1/2” to 3/8” supply line. ok, grab that. doesn’t fit of course.

so I grab a 1/2” female to 3/8” female adaptor to satisfy the compression connection from the main to the faucet supply. everything screws in nicely but the compression nut slides back down the main pipe and leaks profusely when I turn the valve back on. it is hand tightened + a few turns of the wrench.

so now I come here! how can I most simply connect the old 1/2” compression nut fitting to the new 3/8” supply line?

thank you Reddit!