Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Venting Wet Returns

cdmcdm Posts: 73Member
I have seen several posts on venting wet returns on one pipe steam systems - What advantage does this add one pipe steam system.

cdm

Comments

  • Large vents on the dry returns allow the air to escape so the steam can get in. The radiator vents are too small to handle this job, without burning excess fuel to force the air out.—NBC
  • Jamie HallJamie Hall Posts: 10,819Member
    But there's no point to venting a wet return -- if that is what it really is.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • FredFred Posts: 7,977Member
    @cdm , I think those posts you refer to are from someone who thought/thinks venting a wet return helped their situation. Don't vent a wet return. It is a waste of a good vent and likely will spew water. Serves no purpose.
  • cdmcdm Posts: 73Member
    Thanks for the response - Since the wet returns are at the end of the main last feed. I also could also not see why an additional vent was required.

    cdm
  • FredFred Posts: 7,977Member
    Let's make sure we are really talking about a wet return. A wet return is a return that is below the water level in the boiler. Any returns above the water line or at the end of a main, after the last radiator run out is basically a "Dry" return and can benefit from venting. Once it drops down and is below the boiler water level, it is filled with water and there is no benefit from venting those wet returns.
Sign In or Register to comment.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!