Changes to Natural Fuel Code Section 8.3

Gas lines greater than 2 1/2” diameter or >2psi must be purged outdoors. Large gas lines, as listed below, require purge with inert gas such as nitrogen prior to removal from service.

Nominal Pipe Size (in.)	Length of Piping (ft.)
2 1/2	>50
3	>30
4	>15
6	>10
8 or larger	Any length

For SI unites: 1 in. = 25.4mm 1 ft. = 304.88mm

Gas Detection Indicator

Is ideal for performing NFPA 54 Purge Requirements

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