Fusible plug in Boiler

Fusible Plug is a fitting provided in Steam Boilers to enhance the safety during operation. It’s working depends upon the water level in the Boiler shell.

It is a threaded metallic cylindrical object, through a tapered hole in that which goes through its entire length. That is generally of brass, bronze or also gunmetal.

Fusible Plug Function

In a smoke tube steam boiler, the is fitted on the front pipe sheet, just above the pipe (used for flue gas flow) arrangement but below the perforated feeding line inside the shell.

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Fusible Plug attributes in Boiler

But the question is how precisely this little thing help in avoiding a vast disaster. It’s working is dependent only on the temperatures not on pressures.

What wake up is that during steam boiler operation, the feed pumps to supply water for heavy steam conversion in the Boiler shell top top the basis of the signal sent to the by the electric panel.

And electrical panel receives this signal native the mobrey (automatic water level controller) based upon the fluctuating water level due to continuous steam generation.


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Fusible plug in Boiler

So, if anyhow, this loop of supplying water to the Steam boiler go not occupational (because of any type of fault) during Boiler operation climate after some time the water level in the Boiler shell will first go under the short water level, climate the perforated line.

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Now because of the reduced quantity the water in the steam Boiler shell, the vapor volume in the shell rises and because of continuous combustion in the heating system the temp that this vapor goes up and also it it s okay super heated.

When the water level goes listed below the fusible plug, the lead present inside the Plug it s okay melted due to the fact that of super-heated heavy steam and currently the water indigenous the boiler covering comes out and wets the flue gases and also even disrupts the burning thereby protecting the Steam Boiler from any kind of mishap that may have actually happened otherwise.

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Buy copper Boiler Fusible – Plug

We, at Thermodyne, supply Smoke Tube steam Boilers through all such preferred protections to stop a tension-free and reliable operation of the heavy steam Boiler.