Propane systems use pressure regulators to adjust the pressure of the propane from the tank to the appliance to prevent damage and accidents when using the appliance. These regulators are complex valves that automatically adjust the pressure of the propane gas down to a safe level for the appliance to use. Propane regulators are fitted in most standard propane gas systems, due to how important they are for the system.
Pressure regulators are used in any system where pressure is a concern, including systems that transport water or gases other than propane. Pressure regulators come in many sizes and designs that have changed over the years, but they all serve the same purpose.
The design of a pressure valve is a constant, consisting of three key component: a restricting element, a loading element and a measuring element. The restricting element involves a valve of some kind, which changes significantly according to what the regulator is designed for. The loading element applies pressure to the valve, which can be done via spring, piston or diaphragm actuator. The measuring element makes sure that the pressure from the inlet and outlet are both equal. A regulator can have a single stage or multiple stages of function, and these components are arranged differently depending on the amount of stages or purpose of the regulator.