Natural Gas, Old Buildings, Assumptions And No Good Deed Goes Unpunished

Michael Gallagher recounts a mechanical experience involving a leak in a furnace room where he learned the importance of shutoff valves and unions in threaded piping; the ease of causing leaks in old threaded piping and valves whenever they are disturbed; the risks associated with having a pressure regulator in an underground vault that could be flooded; and that there is more than one type of pressure regulator.