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Discuss Connecting to cast iron tee in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

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Matt0029

Gas Engineer
What's the best way of connecting 110mm plastic to a cast iron tee after removing the lead? Is it to just clear out the flange on the tee insert the 110mm pvc. Then rope and plumbers mate or silicone?
 
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ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Depends on the internal size sometimes you can get a black drain connector in
 
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Matt0029

Gas Engineer
Thanks yes I have used the drain connectors before to go in to cast iron pipe but never a cast iron flange/fitting. I will have a look. Q
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Thanks yes I have used the drain connectors before to go in to cast iron pipe but never a cast iron flange/fitting. I will have a look. Q
normal way would rope packed in and cemented over/ infill
 
What's the best way of connecting 110mm plastic to a cast iron tee after removing the lead? Is it to just clear out the flange on the tee insert the 110mm pvc. Then rope and plumbers mate or silicone?
I had this problem a few years ago. I managed to find a fitting that worked like a pan connector. Bellows end went down inside old cast iron stump. Then new plastic 110 slotted into the silicone rubber-ring sealed end. I laid silicone sealant around the plastic end but.. it didn’t take to the flexible seal too well. Was worried I might get some smell but 4 yrs on and daily use I have no problems. If yr interested I’ll search the part out but imo it was basically the same as a straight pan connector only black plastic
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