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 primary function of a regulator is to reduce high-pressure gas in a cylinder or process line to a lower, usable level as. it passes from the cylinder to a piece of equipment. A regulator is not a flow control device. It is used to control delivery. pressure only.