use of fire shutoff valve in aerospace
 

use of fire shutoff valve in aerospace
hello,
some literatures states as fsov is used in the suction line of engine driven pump(edp).
would request experts here,what is exact application of fsov.does that mean fsov isolate flow if there is any fuel fire & engine fire.if that is the case any possibilities of fire of fsov.
is there any internet resource to understand the application
john