Pro-Flex CSST: Navigating Pressure Regulation in Natural Gas Pipelines – Insights

In the article “Using Pressure Regulators for Site Distribution in Natural Gas Pipelines” from, the importance of pressure regulation in natural gas pipeline distribution is highlighted, along with the relevant codes and guidelines governing these systems.

Higher-pressure natural gas distribution systems are governed by codes such as CFR-2011 Title 49, Volume 3, Part 192, and ASME B31.8, which outline minimum safety standards and regulations for gas transmission and distribution piping systems. While these codes may not specifically address campus distribution systems, they provide valuable guidelines for pipe material selection and regulator selection applicable to smaller systems.

Collaborating closely with the natural gas supplier is recommended to ensure adherence to local rules and regulations. The supplier’s familiarity with local regulations takes precedence over transportation and transmission codes.

CFR Title 49, Part 192 covers overland natural gas piping systems, while ASME B31.8 extends its scope to cover natural gas piping from gathering pipelines near gas wells to distribution piping. The boundary between high-pressure and low-pressure systems is determined by the design of pressure-regulating stations.

The purpose of these codes is to provide a basis for designing pipelines and associated components, including valves, regulators, and pressure vessels. Pressure-regulating stations serve as a crucial component in controlling downstream system parameters.

It’s essential for plumbing engineers to collaborate with natural gas suppliers to understand site conditions and confirm the expected inlet pressure to their regulating stations. The maximum operating pressure is determined by safety pressure-relieving systems, not just the regulator set-points.

During discussions with the natural gas supplier, obtaining information regarding regulator set-points, relief valve set-points, maximum outlet pressure, gas specific gravity, and applicable installation rules and recommendations is crucial.

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