Page 86 - Applied Process Design for Chemical and Petrochemical Plants Volume I

Fluid Flow 73
Table 2-2
“K” Factor Table: Representative Resistance coefficients (K) for Valves and Fittings

Pipe Friction Data for Clean Commercial Steel Pipe with Flow in Zone of Complete Turbulence

Formulas for Calculating “K” Factors for Valves and Fittings with Reduced Port

K
Kz = $ + Formula 2 + Formula 4

0 Formula7

e Fwmub3 Kz - $ + p (Formula 2 + Formula 4) when

+ Formula I + Formula 3
Subscript 1 dehes dimensions
B
I + sinT[o.8 (a - 8”) + 2.6 (I - $>‘I and coefficients with reference to
the smaller diameter.
d Subscript 2 refers to the larger
diameter.

DEN AND GRADUAL CONTRACTION SUDDEN AND GRADUAL ENLARGEMENT

9
=
7 45O. . . . . . . . .& = Formula 1 If: e 45’. . . . . . . . .K2 F~rm~ala
.
.
4ro z 180~. & - Formula 9
(continued on next page)