This specification establishes the requirements for a couplingfor use with low pressure, low and medium high temperature, airducts.
Types. Couplings shall be of two types as follows:
Type I – 450 °F, NAS520
Type II – 250 °F, NAS521
Sizes. Couplings shall be of the sizes specified on theapplicable NAS drawing.
- Edition:
- 2
- Published:
- 09/30/2011
- Number of Pages:
- 4
- File Size:
- 1 file , 47 KB
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