Unfired pressure tank ideas for forced circulation boiler?

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rolphill

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Joined
Mar 4, 2022
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So I was big into steam engines several years ago. I took a break just as I had gotten a forced circulation boiler mostly working. Well I recently got back interested in steam engines and went to revisit my old boiler, and I realized the water tank is WAY too small for the coils and firing rate I was aiming for. It was just a foot or so of 1-1/2in steel pipe. That would explain why I couldn't get reliable water level readings and why my steam pressure would drop so fast.

So I'm looking for an easy way to come up with an unfired water/steam tank of about a gallon or two, 100psi max steam pressure. I just need a port on the bottom, top, and middle.
 
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