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which pressure reducing valve is it?
When I look this up I can not find it. I see it is a B&G FB-3 set as 12lbs with a big lever. But I can only find a FB-38 Pressure Reducing Valve. they seem the same but want to be sure. My main concern is that it will fit when I unthread the old one and rethread this one. ie it is not wider or thinner. And obviously that it is the correct one for my boiler. Is this the correct one? Why can't I find an FB-3?