Soft plug: Difference between revisions
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(Created page with "A soft plug, or fusible plug, is a safety device for boilers. Installed in the crown sheet, the low temperature alloy melts if the sheet become...") |
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: If crown sheet becomes dry immediate temperature increase will melt solder and the remaining water in boiler will gently steam fire out with no damage to boiler. | : If crown sheet becomes dry immediate temperature increase will melt solder and the remaining water in boiler will gently steam fire out with no damage to boiler. | ||
[[File:SoftPlug BenNixon 19961201.jpg|thumb|center| | [[File:SoftPlug BenNixon 19961201.jpg|thumb|center|400px|Ben Nixon's design for a soft plug, as printed in "The Niagara Frontier Live Steamers", 1 December 2016.]] | ||
== External Links == | == External Links == | ||
Revision as of 22:56, 21 January 2017
A soft plug, or fusible plug, is a safety device for boilers. Installed in the crown sheet, the low temperature alloy melts if the sheet becomes overheated due to low water. It blows out and extinguishes the fire.
Ben Nixon style
Ben Nixon wrote the following in the "The Smoke Stack", Niagara Frontier Live Steamers, 1 December 1996:
- A Crown Sheet Soft Plug to protect live steam boilers. Build up an area to 1/4" or 3/8" and drill and tap for a 1/8" brass pipe plug. Modify plug as shown and soft solder copper rivet in place. Install plug
and test for leaks.
- If crown sheet becomes dry immediate temperature increase will melt solder and the remaining water in boiler will gently steam fire out with no damage to boiler.
