What is the maximum allowable working pressure (MAWP) for gas piping systems in most residential installations?

The maximum allowable working pressure (MAWP) for gas piping systems in most residential installations is typically 2 psi. This standard is established to ensure safety and functionality within residential environments, where high pressures can pose risks such as leaks or equipment failure.

In residential settings, gas appliances are designed to operate at lower pressures, and 2 psi is sufficient to provide the necessary gas flow without leading to excessive strain on the piping or appliances. Adhering to this pressure limit helps to maintain the integrity of the entire gas distribution system and minimizes the potential for hazardous situations.

Other choices represent higher pressures that are more applicable to specialized industrial settings or specific applications, but for standard residential installations, 2 psi is the recognized maximum that balances safety and operational efficiency.