The fundamental operation of a pressure reducer is relatively straightforward yet highly effective. It typically consists of a diaphragm, spring mechanism, and an inlet and outlet connection. When pressurized fluid enters the reducer, it acts on the diaphragm, which is connected to a spring. The balance between the spring tension and the fluid pressure dictates the output pressure. As the output pressure increases, the diaphragm moves, compressing the spring until a steady-state is achieved. This mechanism allows the pressure reducer to automatically adjust and maintain the set output pressure despite fluctuations in the input pressure.