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The working pressure and temperature limits of ASME Code B31.9 - Building Services Piping
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ASME B31.9 Building Services Piping applies to the following building services:
The working pressure and temperature limits of B31.9 can be summarized to:
| Service | Temperature Limit | Pressure Limit |
| Steam and condensate | maximum 366oF
(186oC),
minimum 0oF (-18oC) |
150 psig (1000 kPa) |
| Air, gases and vapors | maximum 200oF
(93oC),
minimum 0oF (-18oC) |
150 psig (1000 kPa) |
| Nonflammable Liquids | maximum 250oF
(121oC),
minimum 0oF (-18oC) |
350 psig (2300 kPa) |
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