Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Increasing main venting

Options
NJSteam
NJSteam Member Posts: 6
in Strictly Steam
My mains (2 1/2", 45 ft., parallel flow) are vented through a 1/4" tapping at an elbow.  To gain increased venting, can I go to 1/2" vents through a 1/4" nipple and then a 1/4" x 1/2" reducing coupling?

Comments

  • BobC
    BobC Member Posts: 5,479
    Options
    1/4" CFM

    That main contains about 1.5 cu ft of air. I'm guessing a 1/4 tapping will be good for 2CFM at 2oz of pressure so it should work.



    The table I'm using lists a 1/8" pipe as good for 2cfm and a 1/2' pipe as good for 3.4cfm at 2 oz (Greening Steam pg131). There is nothing for 1/4' pipe and I assume the 1/8" figure is actually for the 1/4' pipe. Does anybody know if my assumption is right??



    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • NJSteam
    NJSteam Member Posts: 6
    Options
    Gorton D

    Could I use one Gorton D on each main or is it necessary to use several in an antler?
  • BobC
    BobC Member Posts: 5,479
    Options
    Gorton #2

    if each main is 45 ft of 2-12" pipe you need more venting than one or two Gorton D's; you would want a Gorton #2 on each one. More would not help because of the 1/4" tapping your coming through.



    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • NJSteam
    NJSteam Member Posts: 6
    Options
    Thank you

    OK, BobC, many thanks for your help.
This discussion has been closed.

Categories