branch connection

[bonkers]

Preferred branch connection, in or out of header pipe?

 

[DGrayPPD]

Too many variables to answer that question. You'll need to provide more details for a better answer.

"Thinking is the hardest work there is, which is probably the reason why so few engage in it."

-Henry Ford

 

[SnazyDragon]

depends on size of branch/header, material, wall thickness. Need more details. Preferred? Does that mean ease of installation, fabrication, or best design practice?

 

[bonkers]

Best design practice. ASME B31.8 shows either option without explanation. ANSI 150 4" std pipe branch on or in 8" std pipe header.

 

[SnazyDragon]

Most common for this case would be a Reducing Tee. Could also use a straight tee with a reducer on the branch.