Replace galvanized tee?

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Rookiekie

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How do I replace a tee? Please see the pictures. The threads are corroded to the extent that I can potentially remove the tee without needing to cut the pipes. But I don’t know how will I put a new tee in. Should I cut the cast iron connection near the floor? I am not confident how to repair it, if I go that route. Do I replace it with a pvc pipe? Or can I still replace with a GI pipe?

The pipe coming down (stack vent?) seem to be supported above as it is freely hanging in the air as opposed to pressing against the tee. Do I need to support it further?

Thanks in advance for your help.
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Mr tee

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I would cut 1/2 way below the tee and the fitting below and about the same distance above. PVC would be easiest for you. Use shielded 2 couplings. If you support the pipe you will never know if you had to. If you don't support the pipe it will become clear if it was necessary or not.
 

Rookiekie

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I would cut 1/2 way below the tee and the fitting below and about the same distance above. PVC would be easiest for you. Use shielded 2 couplings. If you support the pipe you will never know if you had to. If you don't support the pipe it will become clear if it was necessary or not.
Thank you for the quick reply. Can you please suggest some ideas to support the pipe? One option I am considering is cutting the wall above and clamp the pipe to the stud. Since this is basement, I am not confident in the framing work. Is there anything else I can do? Perhaps something that can provide support using the concrete block wall?
 

Rookiekie

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sure strap it to a block of proper thickness to wall
Will the strap provide enough friction to support the weight of the vertical run of about 8 feet? Also, the pipe is about 5” away from the concrete wall. Should I wrap the pipe with perforated plumber’s tape and secure it to the wall? It is a 1.5” galvanized pipe.

Additional info: I don’t have the ceiling open but I don’t think this is a straight vertical vent spanning across multiple floors. There are no other fixtures above this spot.
 

Jeff H Young

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yes make sure strap fits tight use a 2 hole strap and wedge a little something in there if you dont think its tight enough
 

John Gayewski

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You could use a friction clamp (also known as a riser clamp) on the floor above.
 

Jeff H Young

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riser clamp great idea , he mentioned he could open wall above. I would prefer not disturbing walls above but if work needs done there thats a good idea
 

Rookiekie

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Yes, I just got done repairing the ceiling. I would prefer to not open another drywall project. Also, I am assuming I would have to install the riser clamp right above the floor joists. But I am not sure if the subfloor will prevent me from doing so. Also, it seems like 1.5” riser clamps are not something big box stores stock locally. So would have to wait a few days for online order to arrive.

What if the pipe turns at 90 degrees right above the wall. Do I still need to support the vertical run?
 

Fitter30

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Don't know how far the center of the pipe to wall is? Two - 4 hole unistrut clamps 4.125" off the wall with riser clamp sitting on them. Plumbing supply would have the riser clamp and L brackets. HD L bracket electrical dept. Mounting closer to floor that ceiling would stabilize the pipe better.
 
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