![]() ![]() Normally, I am careful to avoid sweating with such a large heat sink as this valve (the valve body is probably 5 times as massive as the old valve that died). What I tried (with misgivings) was to tightly thread a 1/2" threaded-to-copper coupling onto the bottom of the valve, and then to sweat this whole assembly onto the copper tube rising through the floor (with the valve positioned to mate to the radiator). So I don't have a way to install an externally-threaded riser coming up through the floor, and then to spin the valve onto it. For this reason, I'm not able to rotate the valve about a vertical axis (the valve outlet would hit the coupling to the radiator).Īlso, I'm not able to rotate the tube coming up through the floor, because the supply must reach the radiator in a tight space between the floorboards and the thick foundation wall. What makes this difficult (for me, anyway) is that the piping comes through quite close-fitting holes in the flooring. I got a new valve from my big-box store, with 1/2 inch threads for both inlet (internal thread) and outlet (external thread): 1/2 in. ![]() The flow-control valve failed on one of my old cast-iron hot water radiators. But it is also specific to radiators, so I hope this is the right place to post. ![]() In a way, this is a general plumbing problem.
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June 2023
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