Boiler Guage Question

Richard_9

I currently have a vacuum/pressure guage on my old scotch-marine boiler that doesn't work. Do I need to replace it with a similar guage, or can I use just a pressure guage?

I've read Dan's books and definitely understand the need to keep the pressure low, but the whole vacuum thing still confuses me--just like the current guage.

Thanks for your help.

Alan(CaliforniaRadiant)Forbes

Good Questions

We usually install a positive pressure gague, but here's a picture Mad Dog sent in.

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