drop header pics?

Charlie from wmass

Drops are awesome for what they are made for. tight dimensions to the water line and header. also they dry out the steam for the high fired small boilers. They also add joints for expansion between the sections, this is what I like about them. But they are not required if you have proper piping near boiler and into the mains. If you follow the diagram with the boiler and you meet their heights you should be fine.

Timco

I am designing a drop header, and need 2) 3" risers, and a 4" header, tieing into a 6" main. I had several threads bookmarked but all the pics are gone. Any ideas on where to convert from 4-6" for the main or pics would be great. Did not see anything in the contents of Lost Art on this, but need to read the header section this eve...Smith recommends a F&T on the main, but I do not see that often here in pics posted. Maybe an article on the in's & out's of designing a drop header? Is one always needed, or do standard headers fly? Will have gravity return...

Tim

Timco

Boiler is 1 mil btu, 11 section Smith. Currently piped as a hot water boiler with no steam piping whatsoever...

Tim

bob young

real pipefitting

Use a 6 " x 4 " elbow & drop into the 4 " header. or go the extra mile & fabricate a six inch welded steam drum [ pipe , end caps & weld-o-let take-offs. want me to come give you a hand !! my kind of job !!

Charlie from wmass

Tim I was looking at the Smith piping diagrams and they want the F&T trap if you drop into the main off the header. If you can go with out a drop into the main off the header and maintain the pitch you do not need one.

Steamhead (in transit)

Uhhhh, Charlie

in the version of the GB300 I&O that's on the Smith site, they only want F&T traps on single-boiler jobs if a receiver tank is used. Not sure why they would want an F&T on a gravity-return multiple-boiler job, since you'd just drip into a wet return, but there it is....... see attached.

Tim, if it's gravity-return, I'd just add the drop to the single-boiler diagram and leave out the F&T.

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Charlie from wmass

Brain fart with what I was trying to say SteamHead. I said drop header when I meant dropping into the main supply line. If you look down at the gravity 2 boiler diagram where they have the steam going up to the main supplly they do not require the trap. I like Smith boilers as a whole I just am not a fan of their I&O manuals. Thing is the last blue Smith I put in I was the helper and that was a long time ago. On larger steams weil mclain has been our choice more due to wholesaler availibilty than brand preference. Even the best boiler is not worth dealing with if the supply house it comes from is not up to par.