Can anyone tell me what material my penn royal model 3407 wood boiler is made of, ive searched and been unsuccessful. Just need to know if it is a cast, alloy, or steel? Thanks in advance!
Penn royal wood boiler
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That looks to be a plate steel stove with cast iron doors. The dead giveaway is the welds . Cast iron isn't routinely welded. Looks like a fisher clone with hot water jacket and possibly a hot water coil. I seriously doubt its any sort of special alloy realizing that all steel is an alloy. Expect its just low grade boiler plate. I have seen a couple of homemade versions over the years. They work well as long as there is circulation through the jackets and properly located safety reliefs on the piping.. They can be a bomb if they are full of water and allowed to boil with valves closed (like any boiler).
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