5.1
Piping Plan
5.2
Interconnections Between Gas Piping Systems
5.3
Sizing of Gas Piping Systems
5.4
Operating Pressure
5.5
Piping Materials and Joining Methods
5.5.1
General
5.5.2
Metallic Pipe
5.5.3
Metallic Tubing
5.5.4
Plastic Pipe, Tubing, and Fittings
5.5.5
Workmanship and Defects
5.5.6
Metallic Pipe Threads
5.5.7
Metallic Piping Joints and Fittings
5.5.8
Plastic Piping Joints and Fittings
5.5.9
Flanges
5.5.10
Flange Gaskets
5.6
Gas Meters
5.7
Gas Pressure Regulators
5.8
Overpressure Protection Devices
5.9
Where to Install
5.10
Low-Pressure Protection
5.11
Shutoff Valves
5.12
Excess Flow Valve(s)
5.13
Expansion and Flexibility
5.14
Pressure Regulator and Pressure Control Venting

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