Pressure regulators are specialized valve-type contrivances that manage the incoming flow of gas/air in the system. They alter the pressure value of air or gas fed from a cylinder/container or any other source, reducing it to match the internal pressure value. These appliances consist of a restriction, load, and measuring elements. Modern devices are presented in two types - directly actuated diaphragm (also known as a single stage) and pilot actuated piston (or two-stage) regulators. The first one decreases the pressure by reducing the inlet channel opening, while the second one progressively lowers pressure as the air proceeds down the regulator's inner compartment.