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Hoffman H style Float and thermostatic trap at a brewery
I am a mostly residential hvac tech. Therefore I don't have much experience with f&t traps, but I understand how they work. My friend owns a brewery, so naturally I volunteered to solve a problem since it involved free craft beer. He has a steam boiler with pumped return. The vent from the condensate pump started spewing steam. I said "sounds like a trap stuck open or bad." So I narrowed it down to 3 possible traps, all Hoffman H type the were trapping mains. We ordered one and replaced the one that was spewing. I probably screwed things up though by removing the guts of the new one and replacing the old while leaving the old body in place. I started it up and at first all looked good, then after 30 minutes or so the vent went to spewing again. I cracked the union on the outlet of the three traps, the other two were quiet and dripping a little condensate, and the new one was spewing steam. Is the new steam trap bad, or did I cause the float valve to hang open by replacing the guts like I did? is there any trick I should know? I'm going back tomorrow to disassemble it and look. I'm guessing it's the float hung up and not the brand new thermostatic trap. Any advice?