Steam run-out

Joe Blanks

Hi all,
If I want to relocate a steam rad on a one-pipe system 7' away, do I need to increase the size of the run-out? The main is 2" with an 1-1/4" run-out to a 54s.f. radiator. The rad will be moved about 7' from the main to the new riser (for 1st floor radiator). What pitch should I use? 1/2" per 10' or 1/2" per foot? The riser is NOT dripped.

Thanks-

Steamhead (in transit)

If you can get

1/2" per foot of pitch or thereabouts, an 1-1/4" riser should be OK.

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