Abstract: A pressure relief valve (10, 70) is provided having a first tubing (14a) connectable to a fuel tank (62) and a second tubing (14b) connectable to a fuel vapor treating device (64), the pressure relief valve comprising: an externally actuated (hereinafter EA) valve (20) disposed between the first tubing (14a) and the second tubing (14b) and being configured for pulsed actuation by a controller (28) thereby allowing pulsed fluid flow through a primary port (18a) disposed between the first tubing (14a) and the second tubing (14b).

Abstract: A pressure relief valve (10, 70) is provided having a first tubing (14a) connectable to a fuel tank (62) and a second tubing (14b) connectable to a fuel vapor treating device (64), the pressure relief valve comprising: an externally actuated (hereinafter EA) valve (20) disposed between the first tubing (14a) and the second tubing (14b) and being configured for pulsed actuation by a controller (28) thereby allowing pulsed fluid flow through a primary port (18a) disposed between the first tubing (14a) and the second tubing (14b).

Abstract: Disclosed is a valve having a housing formed with a downstream port and an upstream port, with an axially displaceable plunger biased into sealing engagement of a major flow path extending between the downstream port and the upstream port for admitting flow only in the upstream direction, with the plunger formed having a normally closed minor flow path for admitting flow only in a downstream direction.

Abstract: A valve (10) comprising a housing (12) formed with a downstream port (14) and an upstream port (28), with an axially displaceable plunger (34) biased into sealing engagement of a major flow path (78) extending between the downstream port (14) and the upstream port (28) for admitting flow only in the upstream direction. The plunger is formed with a normally closed minor flow path (86) for admitting flow only in a downstream direction.

Abstract: The invention concerns a fuel tank (1) for a motor vehicle comprising a filler connection (2) enclosing a tank refueling passage (11) and operational and tank refueling venting conduits (3, 4) which are connected to a filler head (6) of the filler connection (2), wherein the filler head (6) has at least one change-over switching valve (9) which in a first switching position (tank refueling position) opens a flow path from the tank refueling venting conduit (3) to a fuel vapor filter and closes a connection of the operational venting conduit (4) to the tank refueling passage (11), and which in a second switching position (operational position) opens the connection of the operational venting conduit (4) to the tank refueling passage (11) and closes the flow path from the tank refueling venting conduit (3) to the fuel vapor filter.