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Sizing steam drips piping

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dandub1960
dandub1960 Member Posts: 54
in Strictly Steam

I thought I'd seen this somewhere but can't find it for the life of me. How do you size piping for steam drips into a wet return? All I have found is go no smaller than 3/4 inch.

Steward to 1923 Spanish revival near Chicago - 2 pipe steam 650 EDR shiny new Peerless 63-06

Comments

  • mattmia2
    mattmia2 Member Posts: 16,666

    there is probably a table based on edr somewhere but unless you have a mansion or office building with 1 pipe steam you aren't going to exceed the capacity of 3/4"

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 20,144

    3/4" will carry a bit of condensate. But the best way is to calculate the EDR the drip will carry by by getting the EDR of your radiators connected to the drip

  • dandub1960
    dandub1960 Member Posts: 54

    Thanks guys. Since these are in a two pipe system much of the condensate load likely goes through condensate returns. Sounds like 3/4 inch should be plenty.

    Steward to 1923 Spanish revival near Chicago - 2 pipe steam 650 EDR shiny new Peerless 63-06

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