At its core, a gas pressure reducer operates on a simple yet effective principle it reduces the high inlet pressure of gas to a lower, more manageable outlet pressure. This is achieved through mechanical means, typically employing a spring-loaded diaphragm. When gas enters the reducer at high pressure, it acts on the diaphragm, which moves to adjust the size of the outlet opening. As the diaphragm moves, it balances against the spring force, allowing only a predetermined amount of gas to pass through, thus regulating the pressure.