Steam main vent location and recomendations

Ted Laythe

In my area, I've never come across a one pipe steam system with the main vents installed "at least 15 inches back from the end of the main, and up on a six-inch nipple." They're always at the very end on a tee.
My question is: Is there a main vent that is capable of "combat duty" in that location, one that will work and last? Or should I try to convince my customers to have me repipe the returns because the "Dead Men" in my area didn't know any better 50 to 100 years ago? Is one brand of vent stronger than another?
TED

TED

EBEBRATT_2

Raising itup as much as possible may help. Keep steam pressure as low as possible. Usually vents that can withstand more pressure have smaller orfices and vent less. I don't have a brand preference

Steamhead

EBEBRATT is right

raising the vent will help, as well as keeping the pressure low. The third thing is to size the vent correctly. Measure the length and diameter of each steam main you're working with and the vent size needed can be calculated from this.

Vent sizing charts are in Dan's "Dead Men's Steam School" video and workbook, along with the proper procedure. Since you see so many mains, this would be a good investment.

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