Uncooked rice often contains the bacteria Bacillus cereus. These bacteria can form protective spores that survive the cooking process and if the rice is cooled slowly (and left between 5 Â°C and 60 Â°C for a long time), these bacteria spores can germinate, grow and produce a toxin (poison) that causes vomiting.
Obviously the colder a climate is, the more a furnace is required to run, and the shorter its life expectancy. With our relatively mild climate here in Seattle and the rest of the Puget Sound, the average life expectancy for a gas furnace is 15 to 20 years if well maintained, properly installed, and properly sized.
A gas valve for a furnace is made up of four major parts that include a manual valve, a regulator, a solenoid valve and a pilot safety. The manual valve is turned by hand to shut off gas supply to the furnace completely. In older furnaces, this valve is a component of a gas chain, and it is open when the handle aligns with the gas pipe. The regulator reduces gas pressure from a gas line to a more manageable pressure for the manifold to distribute to the burners.