Gallery, Projects and General > How do I??

solder a boiler

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John Rudd:

--- Quote from: speedibee on November 05, 2018, 03:54:45 PM ---I have made a replacement boiler for a small  static engine that belonged to my father . basicly  it's a brass tube with 1.5 mm wall . with 2 end caps . will this need silver solder or would normal solder do ?

--- End quote ---
Contrary to what others would have you believe, ordinary tin/lead solder would suffice, BUT it depends on the working pressure and the safety valve release pressure.

As an example, the makers of Meccano/Mamod used soft solder for their brass boilers but the relief  pressures are fairly low at around 20-25 psi and the heating system is such that the fuel runs out before the boiler runs dry, secondary relief is provided by the face to face surfaces of the cylinder/port block....

mattinker:

--- Quote from: John Rudd on November 06, 2018, 09:29:56 AM ---

Contrary to what others would have you believe, ordinary tin/lead solder would suffice, BUT it depends on the working pressure and the safety valve release pressure.

As an example, the makers of Meccano/Mamod used soft solder for their brass boilers but the relief  pressures are fairly low at around 20-25 psi and the heating system is such that the fuel runs out before the boiler runs dry, secondary relief is provided by the face to face surfaces of the cylinder/port block....

--- End quote ---

You got there before me! I can concur, I remembered the soft solder Mamod stream engine that I had as a child!

Regards, Matthew.

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