a standard, model, or pattern. 2. general level or average: Two cars per family is the norm in most suburban communities. 3. Education. a designated standard of average performance of people of a given age, background, etc. a standard based on the past average performance of a given individual.
For example, pressure regulators are used in gas grills to regulate propane, in home heating furnaces to regulate natural gases, in medical and dental equipment to regulate oxygen and anesthesia gases, in pneumatic automation systems to regulate compressed air, in engines to regulate fuel and in fuel cells to regulate hydrogen.
The Gas Pressure Regulator: The Gas pressure regulator, that thingy that looks like a Mickey Mouse is a device that is connected to the CO2 cylinder and has the function to lower the high pressure CO2 gas to the pressure required for the reactor to function.