Patent ID: 7856675

Claim:
A ventilation fitting permitting the removal of gas within a fluid line that has non-contiguous fluid transmission comprising: a main body tubular in shape extending between a plurality of ports including an inlet port an exhaust port and a bidirectional port and a plurality of sealing seats including a snub plate seat an inlet port seat and an exhaust port seat, said exhaust port for coupling to an exhaust pipe provides a fluidly connected channel for traversing gases through; a diverter plate including an upper surface and a lower surface, wherein said diverter plate uses both said upper surface and said lower surface to fluidly seal both said inlet port and said exhaust port by seating the upper and lower surfaces of said diverter plate to said inlet port seat and said exhaust port seat respectively, and wherein said diverter plate is springably hinged to said main body providing resilient seating actuation between said upper surface of said diverter plate and said inlet port seat further promoting both a fluidly closed said inlet port and a fluidly connected channel existing between said bidirectional port and said exhaust port to traverse gases through when said inlet port is devoid of fluid pressure and as fluid pressures increase against said upper surface within said inlet port further counteracting spring equilibrium said diverter plate is forced into seated position between said lower surface and said exhaust port seat providing a fluidly connected channel existing between said inlet port and said bidirectional port to traverse fluid through; and a snub plate with an interior facing surface and an exterior facing surface, wherein said snub plate is springably attached to said main body providing resilient seating actuation between said interior facing surface of said snub plate and said snub plate seat allowing for a sealed blockage point from gases entering into said main body through said exhaust port while back-flowing gases from said exhaust pipe will apply pressure onto said exterior facing surface further sealing said snub plate within said snub plate seat and as suctorial pressure applied from said exhaust pipe draws gases from said exhaust port applying increasing suctorial pressure on said exterior facing surface further counteracting spring equilibrium said snub plate is forced open unseating said interior facing surface from said snub plate seat providing a fluidly connected channel existing between said bidirectional port and said exhaust pipe to traverse gases through; whereby said diverter plate directs fluid and gas to appropriate ports providing a flushing state and evacuation state while said snub plate eliminates backflow pressure from entering said bidirectional port, whereby permitting the removal of gas within a fluid line without causing further contamination within the connecting fluid line.