Patent ID: 6435010
Filing Date: 2002-08-20
Classification: G01M

Abstract:
A leak detector system for determining the fluid integrity of a test component, comprising: a one-piece valve body; a first inlet port in said valve body for fluid connection with a source of pressurized fluid; an isolation port in said valve body fluidly connected with said inlet port and with the test component; an exhaust port in said valve body fluidly communicating with said isolation port and for externally discharging the pressurized fluid; an inlet valve seat in said inlet port engaged by inlet valve means in a closed position for blocking flow through said inlet port; an isolation valve seat in said isolation port engaged by isolation valve means in a closed position for blocking flow through said isolation port; an exhaust valve seat in said exhaust port engaged by exhaust valve means in a closed position for blocking flow through said exhaust port, each of said valve means comprising a separate bore in said body axially aligned with the associated valve seat, a valve member axially slidable in said bore and engagable with said valve seat in a closed position, piston means engaging said valve member for moving said valve seat to said closed position in response to a pilot pressure; and pilot control means for selectively applying said pilot pressure to said piston means in response to said control means for conducting a leakage test for determining the fluid integrity of the test component.