Glossary entry (derived from question below)
English term or phrase:
Diameter flexible coupler to connect standard diameter metric sections to the fan inlet.
English answer:
Fan inlet diameter is in inches - "imperial"; other piping may be "metric" - diameter in centimeters
English term
metric sections
Manufactured completely from corrosive material resistant thermoplastic. Diameter flexible coupler to connect standard diameter metric sections to the fan inlet.
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Could you find me the picture also?
PRO (1): Victor Potapov
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Responses
Fan inlet diameter is in inches - "imperial"; other piping may be "metric" - diameter in centimeters
Very often diameter of pipes and diameter of inlet are not the same - you need an adaptor. This adaptor is the flexible coupler described in your text. It allows you to connect a smaller pipe to a larger diameter inlet (or a larger diameter pipe to a smaller diameter inlet).
Moreover, diameters of pipes and inlet may be measured using different systems: pipes in centimeters (called "metric") and fan inlet - in inches (or feet and inches, if it is a very large fan :-)
In this case you NEED a variable diameter flexible coupler - otherwise you will not have a perfect fit between the pipe and the inlet.
Hope this helps.
Good luck!
FYI
We know that 1 inch is about 25.4 mm. But that is an proximate estimation, not the exact figure.
metric system:
http://www.unc.edu/~rowlett/units/metric.html
imperial system:
http://scienceworld.wolfram.com/physics/ImperialSystem.html
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