Page 275 - Valve Selection Handbook

262 Valve Selection Handbook

Customary Mixed Imperial Units, Subsonic Nozzle Flow

Weight flow—Ib/h

Customary Mixed SI Units, Subsonic Nozzle Flow

Weight flow—kg/h

For values of F, refer to Figure 7-2.
Note:

1. The coefficient of discharge as determined at sonic nozzle flow con-
ditions applies also to subsonic nozzle flow, provided the back pres-
sure for determining the value of the factor F is taken as the pres-