This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of a line pressure regulator. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on line pressure regulators. There are risks of injury to persons inherent in appliances that, if completely eliminated, would defeat the utility of the appliance. The provisions in this standard are intended to help reduce such risks while retaining the normal operation of the appliance.
Details test and examination criteria for line pressure regulators, either individual or in combination with over pressure protection devices intended for application in natural gas piping systems between the service regulator and the gas appliance(s). This Standard applies to regulators rated at 2, 5, or 10 psi (13.8, 34.5, or 68.9 kPa) with maximum outlet pressure of ½or 2 psi (3.5 or 13.8 kPa), depending on the intended application.