Filling valve apparatus
A filling valve apparatus having a body portion with an inner wall terminating at an aperture to define a sealing seat. The inner wall extends below the seat to define a trap for a fluid. A cage extends from the body portion with the cage having an inner wall mating with the inner wall of the body portion to define a continuous inner surface. A stem, having a seal, includes an outer surface that is complementary in configuration to the continuous inner surface to define a smooth passageway for the fluid as the fluid is directed into the container thereby ensuring a laminar flow of the fluid between the inner and outer surfaces and into the container. The filling valve apparatus also includes a pre-assembled body portion, valve assembly, cap assembly, lower vent tube assembly, and snift valve.
1. A filling valve apparatus for filling a container with a fluid, said apparatus comprising:
a body portion defining an aperture for directing the fluid into the container;
a valve assembly selectively mounted to said body portion with, said valve assembly including a cage and a stem movably mounted to said cage with said stem defining an upper vent tube and having a seal seated against said body portion when said stem is in a closed position and spaced from said body portion when said stem is in an open position;
a cap assembly selectively mounted to said valve assembly, said cap assembly including a cap and a spring secured to said cap with said cap having a seal engaging said stem when said stem is in said closed position; and
a lower vent tube assembly selectively mounted to said stem with said lower vent tube assembly including a ball cage and a check ball disposed within said ball cage for selectively sealing said upper and lower vent tubes.
2. An apparatus as set forth in claim 1 wherein said valve assembly further includes a block secured to said upper vent tube with said block housed within said cage such that said stem is movably secured within said cage.
3. An apparatus as set forth in claim 2 wherein said stem includes a bell-shaped portion mounted to said upper vent tube and supporting said seal.
4. An apparatus as set forth in claim 3 further including a spring disposed within said cage and engaging said block to continuously bias said stem toward said open position.
5. An apparatus as set forth in claim 1 wherein cap assembly further includes a sleeve mounted to said cap.
6. An apparatus as set forth in claim 1 wherein said stem defines a bore and said lower vent tube assembly defines a bore aligned with said bore of said stem for ventilating gases during an operation of said apparatus.
7. An apparatus as set forth in claim 6 wherein said stem includes a locking device and said lower vent tube assembly includes an integral groove engaging said locking device when said lower vent tube assembly is mounted to said stem.
8. An apparatus as set forth in claim 6 wherein said ball cage of said lower vent tube assembly includes a ball seat with said check ball selectively engaging said ball seat to seal said bores.
9. An apparatus as set forth in claim 8 wherein said check ball includes a radius of curvature and said ball seat of said ball cage includes a radius of curvature that is complementary in configuration with said radius of curvature of said check ball for preventing gases from leaking into said bores during an operation of said apparatus.
10. An apparatus as set forth in claim 3 wherein said bell-shaped portion and said upper vent tube having aligned bores for ventilating gases during an operation of the apparatus.