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Discuss Is there a max run of 15mm from 22mm allowed? in the Central Heating Forum area at PlumbersForums.net

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I am replacing a large (~2m long) old radiator below a window with a vertical one beside the window.
The current rad tees off the old pipe (22mm diameter) and runs directly to the rad.

Can I just cut into that tee'd section and extend to the new rad location that is about 2m away? Would this rad fill correctly?
I'm more comfortable doing that than trying to cut into the 22mm and adding a new tee closer to the rad +blanking the old one.


I'd appreciate any advice. I've attached a drawing of the plan, let me know if I need to clarify at all.
 

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