Purge Control Valve
NOTE:
Do not apply vacuum to port "C", as valve will be permanently damaged.
Apply vacuum to port "A". Air should flow through valve. See Fig 1 . Apply vacuum to port "B", valve should not allow air to flow (except for valves E5VE-AA, E4VE-AA or E77E-AA which should allow a slight flow). Apply and maintain 16 in. Hg of vacuum to port "A", apply vacuum to port "B". Air should pass through valve.