Siphonable check valve and method of making same
A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending projections on the inner surface of the tubular body or mounting adaptor. A valve seat is disposed downstream of the ribs, and an aperture is formed in the side of the tubular body. When the end of a siphoning hose is inserted into the check valve, the projections deflect the hose through the aperture to facilitate further insertion of the hose into the tank.
1. A check valve assembly for use in a fuel tank filler tube comprising:
a valve body having a valving passage with an inlet;
a plurality of spaced projections extending from an inner surface of the valving passage adjacent the inlet;
an annular valve seat disposed in said passage in proximity to the projections;
a valve that is operable for seating against the annular valve seat;
an aperture formed in the wall of said passage and located in a portion of said body to be disposed within the tank; and
a resilient member that biases the valve member in a direction closing the valve on the valve seat,
wherein upon insertion of one end of a siphon hose in the inlet, the plurality of projections direct the one end through the aperture to facilitate further insertion of the siphon hose into the tank.
2. The assembly defined in claim 1 , wherein the plurality of projections are configured to direct the one end of the siphon hose to one side of the passage.
3. The assembly defined in claim 1 , wherein the resilient member comprises a spring.
4. The assembly defined in claim 1 , wherein said valve includes an annular resilient seal formed of elastomeric material.
5. A check valve assembly for use in a fuel tank filler tube comprising:
a valve body having a valving passage with an inlet;
a mounting adapter connected to the valve body;
a plurality of spaced projections extending from an inner surface of the mounting adaptor near the inlet;
an annular valve seat disposed near the projections;
a valve that is operable for seating against the annular valve seat;
an aperture formed in the wall of said passage and located in a portion of said body to be disposed within the tank; and,
a resilient member that biases the valve member in a direction closing the valve on the valve seat,
wherein upon insertion of one end of a siphon hose in the inlet, the plurality of projections direct the one end Through the aperture to facilitate further insertion of the siphon hose into the tank.
6. The assembly defined in claim 5 , wherein the plurality of projections are configured to direct the one end of the siphon hose to one side of the passage.
7. The assembly defined in claim 5 , wherein the resilient member comprises a spring.
8. The assembly defined in claim 5 , wherein said valve includes an annular resilient seal formed of elastomeric material.
9. A method of making a check valve for use in a fuel tank filler tube comprising:
providing a valve body having a flow passage with an inlet and outlet end;
attaching a mounting adaptor to the valve body;
forming a plurality of projections on an inner surface of the passage in the mounting adaptor near the inlet end of the valve body;
forming an annular valve seat in the passage near the projections;
forming a siphon hose aperture in one side of the passage, wherein the plurality of projections act as a siphon hose guide toward the aperture; and
disposing a valve in the passage for guided movement therein and biasing the valve in a direction to close the annular seat on the valve seat.
10. The method defined in claim 9 , wherein said step of forming a plurality of projections includes forming a plurality of radially inwardly extending projections and locating the projections around one half of the circumference of the inner surface of the passage.