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Drill and tap for 3/4" pipe.

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RICK_64
RICK_64 Member Posts: 20
in Strictly Steam
The main vent on my one pipe/steam system was originally drilled and tapped for

1/2" and uses a 3/4 to 1/2" adapter to accomodate a Gorton vent (possibly a #6 or a

"D" size...). I'm looking to install a Gorton #2 which will require me to open the hole up

to 3/4". Can some one tell me the correct drill bit and tap size needed to do this?

Thanks to all the pros on this site for their insight and info.

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  • Steamhead
    Steamhead Member Posts: 16,835
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    The Gorton #2

    has 1/2" male thread- so you don't need a 3/4" hole.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
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