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Steam Radiator Bolt Torque
It seems over the last several years my one pipe steam radiators have slowly started making more and more noise, a loud pinging clanging noise, that got to the point that it was waking us up.
The system is one pipe steam, and the radiators are mostly sectional assemblies with either two or four stout rods that run the length of the radiator and are bolted in place. I've never tightened these so I went around the house and checked them all. A few weren't tight, a few were completely loose and this seems to have almost completely eliminated the noise problem. I torqued them down to 20ft-lb when cold, not too tight because I don't want to crack a section.
My question is, do you guys have a recommended torque for these? How often do you check them?