ONE-WAY VALVE ASSEMBLY FOR A FILLER NECK AND METHOD OF INSTALLING A FILLER NECK

摘要

The application relates to a one-way valve assembly (18) for insertion in a fuel tank filler neck comprising a tubular body (28) provided with a valve seating surface and a slot (38). A valve member (50) is hingedly accornodated in said slot (38) and biased towards the valve seating surface by a spring (48). A seal (52) is disposed between the valve member (52) and the valve seating surface. The application further relates to methods of installing filler tubes (16;106). These methods comprise providing a filler neck (20;108) having an annular flange (22), inserting a one-way valve in the end of the filler neck (20;102) facing the tank (12;102), inserting a nozzle receiver (26;112) in a flexible tube (24) or a flexible filler neck (110) connected to the filler neck (20;102), inserting the assembly in the tank (12;102) and securing the flange (22) to the tank (12;102), preferably welding.