Fiber type pipes ( old )

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tommy

Senior Member
Location
Maryland
Has anyone seen this type of duct pipes.Have a job that I need to extend these conduits. The material seems like cardboard or like made out of roof shingles.Any clues on connecting this type.Some one I know said it was used before PVC.
 

flightline

Senior Member
Re: Fiber type pipes ( old )

If the material you're describing is what I think it is, it might be something that they called "Transite" was an asbestos-cement raceway manufactured by, I believe, Johns Manville Co. some time ago. With all of the hub-bub around asbestos, it was discontinued. Entering "Transite" into their search engine brings up nothing. I bet they'd like to forget all about it at this point.

Be very careful if extending onto this type of raceway if it is indeed Transite. Consult proper authorities. Don't expose you or your workers to danger, and don't incur any liability!

I hope this is what you were looking for, and I hope it helps.

[ March 26, 2003, 06:12 PM: Message edited by: flightline ]
 

bennie

Esteemed Member
Re: Fiber type pipes ( old )

Is this duct black? if so it is "Orangeburg" something only old guys like me know :D
 

Ed MacLaren

Senior Member
Re: Fiber type pipes ( old )

We used a non-metal conduit that we called "fiberduct" for underground services back in the 60's.
The only size we used was 4", and it had about 1/2" wall thickness. It was black in color, with tapered ends. The couplings and adaptors were friction fit and were driven on with a hammer and a block of wood.

Ed
 

bennie

Esteemed Member
Re: Fiber type pipes ( old )

I think Ed is making reference to the same thing.

I would check the outside diameter. I would try a no-hub plumbers coupling and extend with PVC. The only purpose is to create a hole from one point to another.

[ March 26, 2003, 07:14 PM: Message edited by: bennie ]
 
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