Diligent_Nature t1_j90z4do wrote on February 18, 2023 at 11:55 AM

That is a soldered connection. The O.D. of 1/2" copper pipe is 5/8".

nill0c OP t1_j929061 wrote on February 18, 2023 at 6:03 PM

I was hoping that too, and got a replacement valve already, but heating the old valve isn’t melting anything and not budging.

Is it possible it’s a press fit like https://www.homedepot.com/p/BrassCraft-1-2-in-Sweat-Inlet-x-3-8-in-Compression-Outlet-Multi-Turn-Angle-Valve-with-5-in-Extension-Tube-Bell-Flange-CS40BX-C1/202047063 ?

ianryeng t1_j95inxa wrote on February 19, 2023 at 11:59 AM

Turn off the water to the house then open the valve then turn on a cold water faucet somewhere lower to get the water out of the line. If this is not possible keep the valve open and be prepared for the water in the copper line to have to boil off partially before the solder will melt. MAP gas helps as well since it burns hotter in the “water in the line” scenario

nill0c OP t1_j97b5us wrote on February 19, 2023 at 8:24 PM

Oh yeah, should have updated I’ve had the water off and taken apart the valve, mapp gassed it (even though Mapp gas isn’t what it used to be) and laid heavy foil around the toilet and wall so I could really get it hot.

Pretty sure its not soldered in any way I’ve ever seen (I’ve replaced a water heater and pump tank that both needed cutting and sweating to install).