reduce a 2" return line to 1" pipe at repair then back to 2"

jef

can i reduce a 2" return line in steam system to 1" for 4ft of repaired/replaced pipe and couple of 1" 90s then

back to 2 " return line

 i am trying to repipe to back of concrete step instead of going thru concrete step as old pipe did

STEAM DOCTOR

Depends

It would depend on the radiators that are served by that return line. If you are able to measure the EDR of the radiators that would give us the necessary info. If not then you can post pics of the radiators. Include the height of each radiator.

Long Beach Ed

Even easier

Tell us the size of the boiler (In NET BTU or Sq.Ft. of Steam) and tell us if that pipe's handling all of the condensate or just part of it.  

jef

240k well mclain

the repair is on  line with 1/3 of radiators

other side of bolier line are served by the other 2/3 of radiators 

approx 22 radiators 240btu boiler

bolier in middle of bldg with return line going on each side of boiler then coming into one return line  feeding boiler

Long Beach Ed

No problem

Roughly speaking, you should have no problem.  Try to flush that return out while you've got it cut apart.  You won't believe what lives in them.  

nicholas bonham-carter

return under steps

why not leave some means of temporary disconnection for future cleaning, such as a union on both sides of the steps. any part of the piping with a reduction in diameter is bound to collect debris.--nbc

Rod

Insulate the copper pipe

If you're running  the new copper pipe inside the old iron one, as a precaution, I would wrap the copper pipe in plastic electrical tape to isolate it from the old iron pipe.

- Rod