What is required for fittings used with vapor LP Gas?

The minimum working pressure of 125 psig for fittings used with vapor LP Gas is established to ensure safety and reliability during the operation of propane systems. Vapor LP Gas operates under specific pressure conditions, and fittings must be capable of withstanding these pressures to prevent leaks or failures.

Fittings that meet this pressure requirement are designed to handle the potential stresses and forces exerted by the gas, which is important for maintaining the integrity of the entire propane system. This standard helps to minimize the risk of accidents, such as gas leaks or explosions, which could occur if fittings are not rated for the appropriate pressures.

The choices of 100 psig or 150 psig do not correspond to the standard requirements for fittings used with vapor LP Gas, while stating no pressure requirements at all would be unsafe and impractical, as all components in a propane system must be rated for specific pressures to ensure proper functioning and safety.