nill0c

nill0c OP t1_j97b5us wrote

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).

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nill0c OP t1_j939wm7 wrote

That would work if there was an 11/16 compression fitting out there. The problem is that the only part of the exposed pipe that's 5/8 (1/2 inch) is mostly stuck in the valve.

I think my new solution might be cutting it off as far from the wall as possible, then I'm pretty sure the remaining pipe will slip fit over 1/2 copper. So I can then sweat in a regular copper pipe (which I'm pretty sure how it's attached inside the wall), and attach a standard valve to the new 1/2 pipe.

It's a bit risky because I don't know the ID of the pipe I'm cutting, but it feels really thin (and already dented easily when I was monkeying around early on).

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nill0c OP t1_j929061 wrote

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 ?

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nill0c OP t1_j928fz1 wrote

Yeah it would mean cutting out an access hole in the bedroom behind it.

I heated the hell out of it and it didn’t budge. Im thinking it’s like this 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

I’m not sure why anyone in their right minds would install something like that though. It’s impossible to service, and makes replacement a mess.

The walls of the chrome pipe are super thin too.

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