Can't find replacement fuseable 3/4 plug to fix leak into firebox on old Kalamazoo Boiler

[pen]

My buddy has an old Kalamazoo boiler that suddenly started dripping water into the firebox from this "fitting" found at the top of the firebox. It seems to thread into where the heat exchanger is at the top, and is found directly under where the pressure and temperature gauge is.

It appears as though it simply unscrews and can be replaced, but what is it? I'm assuming it's not unique to this stove and hoping it's something that is rather universal.

Thanks if you can help lead me in the right direction for a replacement.

Here's what it looks like at the top of the firebox in the boiler. The water is pouring directly out of this "plug"



Sorry for the sad picture. To describe, it looks like a 13/16 or so deep well socket will simply unscrew whatever it is.

It appears as though it's found in the firebox directly opposite the pressure / temp gauge.



Thanks

 

[hobbyheater]

This is a fuseable link plug .

Just replace it with a black steel pipe plug .

 

[bholler]

Just replace it with a black steel pipe plug .

Didn't they put a fuseable link in there for a reason?

 

[hobbyheater]

Didn't they put a fuseable link in there for a reason?

If you can find a fuseable plug get one . You are quite RIGHT!

 

[Byron21]

I know nothing about this supplier but it does explain them a bit, its seems there are two types... good luck
http://boilerpartsusa.com/parts_fusible-plugs.htm

 

[hobbyheater]

I know nothing about this supplier but it does explain them a bit, its seems there are two types... good luck
http://boilerpartsusa.com/parts_fusible-plugs.htm

Good find!

 

[pen]

Thank you!

 

[pen]

Here is what the plug this boiler looks like. However, I can't seem to find this style in 3/4 which is what i need.

Know of any other suppliers or suggestions? My searching hasn't turned up a direct replacement.

Thanks

 

[pen]

Also what temp rating eould this be? In searching, there seems to be different temps for different plugs.

 

[pen]

Pics

 

[pen]

Still haven't been able to source one of these. Any advice?

Thanks,

pen

 

[pen]

Found out the thread was locked,,,, thank you @DoubleB ! Got that fixed.

I can find similar fuseable plugs in different sizes or configurations but not one that will match this. Any advice would be great.

Thanks

 

[pen]

http://www.elsiemfg.com/product-category/plugs/pipe-plug/brass-pipe-plugs/

Has plugs up to 1/2 inch, but not 3/4... Someone must carry them, I just can't find them.

 

[velvetfoot]

How about a reducing bushing if 1/2" will work.
http://www.homedepot.com/p/Sioux-Ch...-MIP-x-FIP-Hex-Bushing-930-15302001/202254973

 

[Mt Bob]

I'm thinking it was replaced at one time with the wrong one,as per your description,it appears to be a outside/fireside mounting point.I recommend calling the people at boiler parts usa,I bet their standard 3/4" fireside plug is what you need.