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Equivalent Length (Le) vs. C Values

Equivalent Length (Le) vs. C Values

Equivalent Length (Le) vs. C Values

(OP)
I was taught to think of losses in terms of equivalent lengths.  But, the ASHRAE Fundamentals handbook prefers to use C (coefficient) values for losses in fittings.  Their method is so involved for applications where ballpark figures can do.  

Is there an easy conversion between C values and Le?  Or, is there a better reference to use (hopefully) providing a wide selection of fittings in various sizes?

Or, is there some shortcut with the C value I'm not getting?  I really don't need a full-blown hydraulic analysis when I'm certain there are some tried-and-true shortcut methods.  - Thanks! CuriouslyGeorge

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