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K1 Domestic Gas
K1 Flow Rates

Gas flow rates within a pipe system are affected by a number of factors including:

  • Pipeline design – i.e. how many fittings and changes of direction within the pipeline system.
  • Internal bore of the pipe
  • Internal bore of the fittings
  • Smoothness of the bore

Refer to AS 5601...The Gas Installation Australian Standard.

Pipe and Fittings Dimensions
 
Size
Pipe – OD
Pipe – ID
Fittings – ID
DN 16
16 mm
11.9 mm
8.6 mm
DN 20
20 mm
15.5 mm
12.1 mm
DN 25
25 mm
20.0 mm
16.7 mm
DN 32
32 mm
26.1 mm
20.3 mm


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