https://lkmnsorgedhang.blogspot.co.uk/?book= 1609834771
The 2015 INTERNATIONAL FUEL GAS CODE SOFT COVER sets forth requirements that address the design and installation of fuel gas systems and gas-fired appliances, based on the most current information and technology available. The requirements are performance-driven, making this an effective tool and valuable addition to a user's code products. In this updated code, the section on protection of piping has been completely rewritten, and readers are informed that line regulators installed in rigid piping must have a union installed to allow removal of the regulator.