5. Acceptable forces on flanges

Standardized pumps

The French standard NF E 44-145 Forces et Moments applicables aux flanges, pompes centrifuges et hélico-centrifuges à axe horizontal (Forces and moments applicable to flanges, centrifugal and helico-centrifugal horizontal-axis pumps) assesses the limiting forces on flanges for 8 major families of single-stage and multistage pumps.

This comprehensive standard covers the case of complex 12-component loading [3 forces (F _x , F _y , F _z ) and 3 moments on each flange].

General case

This is dealt with either by assigning the pump to one of the 8 standardized families, or by calculating...