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Single pipe steam system. I've got a radiator that has a sag of about .25" in the middle when I put a level on it. This has made it difficult to slope towards the steam line and I notice lots of clicking noise/small tings when it heats up that I assume is the water that did not drain making small hammers.
I also need to replace the angle valve. The union nut is stripped and leaking. I'm debating if I go through that work with a radiator that has a sag or is it time to replace the 100 year old radiator.
The radiator is about 24" tall, 5 posts wide, and has 29 blades.