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Old 07-10-2008, 12:52 AM   #1
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Questions on assembling b-vent pipe


I've noticed that the b-vent pipes are designed to snap together tightly. Do you still need to fasten them together with sheet metal screws?

Also are b-vent products from different manufacturers compatible? The local HD has American Metal Products, but they do not have some of the lengths I need and I may have to go looking at other stores. If, say the local lumberyard has b-vent piping from a different vendor, could I still use it with American Metal Products pipe?

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Old 07-10-2008, 05:31 AM   #2
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Questions on assembling b-vent pipe


you must use the same brand. your not suppose to screw into b vent pipeing however the duravent pipes sometimes are very diffacult to turn to lock so i would use screws at the connection. the other type of b vent witch locks in place when pushed together and with a locking ring i dont screw in place. when secureing the bvent with metel hangers or straps I will screw to secure. I feel that if he chimney was not secured and falls or breaks at the seam some one could seriously get hurt.

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Old 07-10-2008, 03:32 PM   #3
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Questions on assembling b-vent pipe


It is against code to screw into b-vent this goes double for all-fuel (oil) the reason is if the wall is penatrated it will transfer heat out and is a potential fire hazard .If secured with the proper hangers in the proper intervals you dont have a thing to worry about
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Old 07-15-2008, 10:16 PM   #4
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Questions on assembling b-vent pipe


The present vent system expands from 3" pipe to 4" pipe. Is this necessary?
By the way, it is from a water heater.
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