In a standard propane equipment installation, what is a common safety device used to protect against overpressure?

A Pressure Relief Valve is the correct choice for a common safety device used in propane equipment installations to protect against overpressure. This device is essential because it is designed to release excess pressure in a system, thereby preventing potential hazards such as equipment failure, explosions, or leaks. When pressure surpasses a predetermined level, the valve opens, allowing gas to escape safely, thereby regulating the pressure within the system.

On the other hand, a Thermostatic Valve is mainly used for controlling temperature rather than pressure. Flow Control Valves regulate the flow of gas but do not provide explicit overpressure protection. Check Valves are essential for preventing backflow in a system but are not intended to manage pressure directly. Therefore, while these other devices have their functions, the Pressure Relief Valve specifically addresses the critical need for overpressure protection in propane installations.