I’m attempting to remove a 8″ Metalbestos double-walled gas flu from its chase. Space is a little tight (don’t think my builder read the clearance numbers embossed on the pipe), so just hacking through it with a sawzall (if I had one) wouldn’t be easy.
Can anyone tell me how this stuff is put together — twist lock (which direction?), some sort of snap-together scheme, or what? What’s the easiest way (short of sawzall or sledge hammer) to get it apart?
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy. –James Madison
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It has "twist right" thread to join it. And sometimes there is a locking ring that slips over mating flanges and is tightened with a ss bolt and nut, same as on the ss stovepipe. The twist usually requires only about a quarter turn to free it.
Getting it apart might be a bitch if you can't get to any of the joints.
Oft times, when run through a chase, it's assembled in long sections and lowered from the top. If thats the case, you might be able to unthread it at the bottom, if it's accessable, and lift it out (if there are no elbows and turns and such.
And sometimes, metal tape is used instead of the lock ring.
If the flue is very tall, it may have some brackets attached to it, supporting it in the framing.
May be a sawzall job, but cutting that ss sheetmetal might be a PITA. You might need a grinder.
It's only really accessible in the middle, for about 6 feet, but I've got two joints there to work with, and some wiggle room at the bottom. It's only loosely hanging by a strap on an elbow at the bottom; probably strapped above in the attic, but haven't been up there yet.
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy. --James Madison
Well, good luck!
If you do have to cut it where you can get at, it's probably worth salvaging as many good sections as you can....that stuff is pretty spendy.
Well, turns out these vents were snap-together type. There's a dimple on the two ends of the pipe and if you line them up supposedly the pipe will snap apart, but lining them up is only possible in theory, so I just worked them back and forth until they came loose.
Now I gotta get the roofer to come out and patch the hole in the roof. Roofing is one thing I **don't** do.
Errr, presumably the thing was actually venting something?I assume you aren't planning on using a nearby basement window left open as the "vent" <G> (I saw that a year or so ago!)
Fighting Ignorance since 1967
It's taking way longer than we thought
Well, you know, the wife thought it was in the way.
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy. --James Madison