Repalcement parts for old boilers

Mark Biro

I have an old US National steam cast iron boiler, (div. of Crane) with two leaking sections just above the water line.

Anyone know if there's a place with old cast iron boilers for just such an occasion? For replacement sections?

Mark Biro

Replacement parts for old boilers

sorry for the typos
the manufacturer was National US Radiator, a division of Crane Company
Net IBR rating: steam= 3125 ft^2


AGA Rating:
Input= 1,250,000 BTU/hr
Output= 1,000,000 BTU/hr

Max working pressure:
steam= 15 PSI
water= 60 PSI

Min Relief valve cap= 1000 lbs/hr

Dave_103

Gees Mark............

I don`t know, there are lots of scrapyards around, to my knowledge, that`s where they go.

Dave_103

Mark................

I just know your trying to get-to-me!!!LOL!!!

Steamhead (in transit)

Mark, you need a new boiler

With two sections leaking like that, you can be sure the others will leak soon. Best to start completely fresh.

A good steam man will determine the proper size replacement boiler- chances are your National-US-Crane is oversized. He will also look at the rest of the system to see if something went wrong there to kill the boiler. Last but not least, he can also suggest some energy-saving system upgrades such as insulation, proper main vents etc.

Try the Find a Professional page of this site.

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Unknown

Sorry Mark...........

I thought you were someone else fooling around, "Steamhead" would know the best course of action here. Again I Apologize!

Mark Hunt

Yup!


You want sections right?

Mark H

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Mark Biro

yes sir
looking to get repairs to hold us for a year or two or three until the entire one pipe steam system is replaced with two pie hot water with high efficency condensing boilers. Don't want to spend $25k +/- now just to have it scrapped a few years form now.

Maybe some one else has a 1250 MBH input steam boiler they're replacing, and it's functioning?

Mark

Mark Biro

no problem
any input may be useful
mjb

Steamhead (in transit)

Why

do you want to scrap the steam? It would be far more cost-effective to fix it. And if you use the same radiation, you'll have to keep it so hot to heat the building that the boilers won't be condensing much of the time. Bye-bye savings....

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Mark Biro

Steamhead:
as I posted to the other respondent, we're trying to get by for a year or two maybe 3 before we completely replace one pipe heating system with two pipe hot water, and hi efficency boilers.

Steamhead (in transit)

Doesn't look

like you have much of a choice if you want to heat the building now. See my post below.....

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Mark Biro

system is in 76 year old fraternity house. boiler is about 50 years old +/-, all piping and radiation is original. Gas costs are eating us up. Some of the piping is leaking now, concealed between ceiling and floor above.
It would be part of an overall renovation.

House is on Historic register, so we want to be carful about what we do, modernize,reduce energy consu,ption, give room by room control so some aren't freezing while the others have windows open.

I'm sure you've seen this often
mjb

Steamhead (in transit)

I bet those leaks

are coming from the packing nuts on the radiator valves above, not from the piping itself. I can't count the number of times I've seen this and people assume it's a broken pipe.

You can get thermostatic radiator valves for one-pipe steam systems. Just make sure they have integral vacuum breakers or they won't work well. Danfoss is a good choice here.

When properly installed and tuned, and assuming the boilers are the same, a steam system will equal the comfort and approach the efficiency of a hot-water system. Don't waste your money tearing it out. Get a steam man in there instead who doesn't have dollar signs in his eyes.

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Unknown

Mark.....

it will likely be more cost-effective to keep the steam heat. There are some really efficient systems out-there-now, so don`t be misled. As far as finding "used" boiler sections for your problem, it may be a "Lark", I don`t "plug" anybody, but Steamhead does Know!!!!

burnerman_2

try this

last year we had a steam boiler leak we put in boiler seal something like raditador sealant got them through the winter

[Deleted User]

replacement sections

There used to be a supply house in New York named Oswald Supply Company that stocked used boiler sections for this purpose. They also stocked the push nipples to facilitate the replacement. I don't know their number but I think they were located in Harlem. One thing I do remember is that the sections were not cheap. If you decide to go this route and find sections, make sure that the repair person checks the remaining sections for blockages when they dissemble the boiler at the point of the cracked sections. If at this point they find that the remaining sections are significantly blocked with debris and scale, you may need to acid clean the boiler. All in all when you take into consideration the cost of the replacement section(s) and labor, it is probably more cost effective to start with a new boiler.

mike jones

Boiler Leak

do you recal the name of the sealer you used because we heard the boiler liquid or boiler solder oatmeal might make other problems for our old steam boiler in a 10 unit building.

ira_3

filler

did u seal it with epoxy?