One pipe system question

[Plumber69]

On a one pipe system such as in the drawing. Say main pipe was 1 1/2 and had tee's with a smaller pipe feeding the radiators. How does water heat the radiators? Wouldnt it just run through the main header?

 

[NY_Rob]

They employ special "Monoflow" or "Diverter" Tees at the radiator supply or return or sometimes both...
https://heatinghelp.com/systems-help-center/diverter-tee-q-and-a/

http://houseneedssolutions.blogspot.com/2013/11/monoflo-tee-unique-system.html

https://www.supplyhouse.com/Bell-Gossett-108122-1-1-4-x-1-2-Copper-Red-Ring-Monoflo-Tee

https://www.supplyhouse.com/Taco-VF-125-075-1-1-4-x-3-4-Copper-Venturi-Tee-11429000-p

 

[Sponsor]

 

[Plumber69]

They employ special "Monoflow" or "Diverter" Tees at the radiator supply or return or sometimes both...
https://heatinghelp.com/systems-help-center/diverter-tee-q-and-a/

http://houseneedssolutions.blogspot.com/2013/11/monoflo-tee-unique-system.html

https://www.supplyhouse.com/Bell-Gossett-108122-1-1-4-x-1-2-Copper-Red-Ring-Monoflo-Tee

https://www.supplyhouse.com/Taco-VF-125-075-1-1-4-x-3-4-Copper-Venturi-Tee-11429000-p

Do all one pipe systems use them