What is the primary function of a pressure relief valve in an LP gas system?

The primary function of a pressure relief valve in an LP gas system is to prevent overpressure in the system. This valve acts as a safety device that automatically opens to release excess pressure that may build up due to various factors, such as thermal expansion of the gas, a malfunctioning regulator, or a blockage in the system. By alleviating excessive pressure, the relief valve helps to protect the entire system, including the pipes, fittings, and appliances, from potential damage or failure that could lead to leaks or catastrophic incidents.

Ensuring safety in LP gas systems is crucial, as high pressure can pose significant hazards, including fire and explosion risks. Thus, the presence of a properly functioning pressure relief valve is vital for maintaining safe operation under normal conditions.