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Low (no pressure) in boiler
Hello Steam Friends,
I am working to fine tune the one pipe system in our house. When the boiler cycles, it never trips the pressuretrol (which is set at .5). The 0 - 30 gauge gave up the ghost a few weeks ago so I bought a 0 - 3 lbs gauge and put on a T with the pressuretrol. When the boiler is firing, the low pressure gauge needle shows a little motion but doesn't really move off the zero (photos shows ). Then after the boiler cycles off, the gauge reads a little vacuum. Shouldn't there be more pressure showing on the gauge? (photo shows slightly below 0)?