Document Type and Number:
Japanese Patent JPS5526526
Kind Code:
Y2
Abstract:
A shut-off valve for the automotive fuel system is operable to shut off the fuel flow whenever a positive pressure exists in the fuel line between the fuel tank and the shut-off valve. The shut-off valve may be employed in combination with a fuel pump or may be employed separately in the fuel line and comprises a flexible diaphragm connected by a stem directly to the valve member and movable with the valve member. The diaphragm air chamber has an air vent controlled by a vent valve providing a relatively large opening for bleeding in air and providing a relatively small opening for exhausting air from the diaphragm air chamber. The vent valve thus permits a relatively fast movement of the valve member to an open position and a relatively slow or restricted movement of the valve member toward a closed or partially closed position.
Application Number:
JP17969577U
Publication Date:
June 25, 1980
Filing Date:
December 27, 1977
Export Citation:
International Classes:
F02M37/00; F04B49/22; F16K7/17; F02D33/00; (IPC1-7): F02M37/00; F16K7/17