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Need help to identify this device

Ross_7
Member Posts: 577

Fellow WetHeads. Would anyone like to chime in on the identification of this device. I have run into this once before, but can't find any reference in any of my old heating books. Thanks for the help!
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Hi Mike. No sir that bottom pipe is coming from the supply on the boiler0
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Looks like there's an air port on top. B&G part? I've never seen one of those.0
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I stand corrected. It is on the return. I'm guessing that this is a common header for all of the returns. This might allow a person to shut off each individual return coming back to the boiler, and purge each loop individually via the boiler drain that is mounted on the side?0
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Sure would be fun to take that thing apart and see what's on the inside.0
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A manifold with balancing valves? Notice the adjustment scale on each one.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
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Did you ever find out what it is?0
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Update: This device is at my cousin Jeff's house. House was built in 1953. I managed to stop by yesterday and get a better look at this device. All of the boiler piping is pretty cobbled up. There is a Schrader core at the top, when you loosen the cap, it spews more water than air, but some air did manage to come out. The two 3/4" balancing valves facing us in the picture seem to be tied together with 3/4" outlets opposite to them on the "manifold" we'll call it. The increments are " 0, 1/2, 3/4, 1". They were not getting any heat to the top floor of the house. I managed to get the valve closest in the picture to open farther to "1" and the pipe opposite started to heat up, which is as far as I can tell is the return for the upstairs loop. As far as I can tell, this item serves two purposes, as a balancing manifold for split loops, and purging. I stopped by after work yesterday, I will post more pictures when I get a chance. The only markings I saw on it were an "H" and a "G", if I recall. No other markings.1
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