Which type of regulator is designed for lower pressure LP-Gas applications?

The single-stage regulator is specifically designed for lower pressure LP-Gas applications, making it the correct choice for this question. These regulators function by reducing the pressure of the propane coming from the tank to a level appropriate for appliances that require a consistent and lower pressure supply, such as small gas heaters, grills, or portable devices.

Single-stage regulators provide direct pressure reduction from the source to the appliance, which is suitable for applications where the demand for gas isn't high, ensuring a simpler, more straightforward operation. Their design typically incorporates a pressure adjustment mechanism that can maintain a relatively constant outlet pressure, acknowledging the specific use-case requirements.

In contrast, two-stage regulators are more appropriate for circumstances where gas pressure needs to be reduced in two steps for larger systems, often necessary to handle variations in supply pressure and to provide a steadier output under changing demand. High-pressure and multi-functional regulators address different pressures and applications that exceed the requirements for low-pressure systems, thus not being suitable for the specific context of lower pressure LP-Gas applications.