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Does air vent = air valve = air eliminator?

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Is there any technical difference between an air vent you put at the end of the main and an air valve you put on a radiator, other than the amount of air they are designed to vent (and possibly a different size threaded fitting)?

I only ask because companies like Gorton name them differently. In our system the two main vents are tapped 1/8". The Hoffman #41 that had been there for many years was clogged solid, we replaced with a Gorton D (much larger air opening, although less than a Gorton "air eliminator").

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  • Abracadabra
    Abracadabra Member Posts: 1,948
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    davidnyc said:

    Is there any technical difference between an air vent you put at the end of the main and an air valve you put on a radiator, other than the amount of air they are designed to vent (and possibly a different size threaded fitting)?

    I only ask because companies like Gorton name them differently. In our system the two main vents are tapped 1/8". The Hoffman #41 that had been there for many years was clogged solid, we replaced with a Gorton D (much larger air opening, although less than a Gorton "air eliminator").

    A Gorton D vents the same as a Gorton #1 main vent.

    Main vents typically have a 1/2" or 3/4" connection.
    1/8" is usually a radiator vent.

    Other than that I think they are the same internally, other than the amount of air they can vent.

    You will probably need additionally venting than that Gorton D you installed unless you have a 10' long 1" main.
    ChrisJ
  • ChrisJ
    ChrisJ Member Posts: 15,671
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    As far as I know all Gorton's are called "Air Elminators".

    As was said a Gorton D is the same as a Gorton 1 except for it's connection style.
    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment