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Supporting Pressfit Pipes

Maximum span between supports of pressfit pipes

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Maximum support spacings for pressfit piping according

  • ASME B31.1 Power Piping
  • ASME B31.3 Process Piping 
  • ASME B31.9 Building Services Piping

are indicated in the table below:

Support Spacing (feet)
NPS
(inches)
DN
(mm)
Water Service Gas or Air Service
B31.1 B31.3 B31.9 B31.1 B31.3 B31.9
1/2 15 6 6 7 8 8 7
3/4 20 7 7 8 9 9 8
1 25 7 7 9 9 9 9
1 1/4 32 7 7 11 9 9 11
1 1/2 40 7 7 12 9 9 13
2 50 10 10 13 13 13 15
  • 1 ft (foot) = 0.3048 m

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Related Topics

  • Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more

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