A flapper valve assembly is provided for venting pressure in a tank. The flapper valve assembly includes a float assembly that is configured to be disposed within a valve housing. The float assembly may have a plurality of guide supports that extend from an end portion of the float assembly. A flapper member is movably supported on the float assembly. The flapper member may include a plurality of guide legs that correspond with the guide supports of the float assembly to maintain proper alignment of the flapper member relative to the float assembly.

A valve device includes: a housing including a peripheral wall, a bottom wall, and a partition wall; and a float valve accommodated in a valve chamber to be able to ascend and descend, thereby opening and closing an opening portion. A slit extends continuously over the peripheral wall and the bottom wall, and a deflectable and deformable elastic piece is formed via the slit. The elastic piece has a free end on the bottom wall, and the free end is provided with a float valve support portion configured to support the float valve.

A valve device includes: a housing including a peripheral wall, a bottom wall, and a partition wall; and a float valve accommodated in a valve chamber to be able to ascend and descend, thereby opening and closing an opening portion. A slit extends continuously over the peripheral wall and the bottom wall, and a deflectable and deformable elastic piece is formed via the slit. The elastic piece has a free end on the bottom wall, and the free end is provided with a float valve support portion configured to support the float valve.

A valve assembly for a tank of a vehicle and a method of creating a vacuum are disclosed. A valve body defines a cavity and an outlet in fluid communication with the cavity for venting the tank. The assembly includes a seat disposed in the cavity of the valve body. The seat separates the cavity into first and second cavity portions. The seat defines an aperture to provide fluid communication between the first and second cavity portions. The assembly includes a cover device disposed between the seat and the outlet. The cover device defines at least one hole therethrough. The cover device is movable between a rest position engaging the seat to minimize fluid communication between the aperture and the hole and an actuated position spaced from the seat to increase fluid communication between the aperture and the hole when a vacuum is created in the first cavity portion.

A valve assembly includes a valve installed in a fluid/liquid supply line, and a water circulation pipe that has a first end in fluid communication with a water supply line and a second end in fluid communication with an inner volume of the valve. Some water flowing in the water supply line is diverted through the water circulation pipe and circulates in the valve. The water that is diverted through the water circulation pipe and circulates in the valve has a sufficient flow to prevent freezing and/or water stagnation in the valve.

A filter assembly includes a vent system. The vent system includes an inner standpipe, a check valve, an outer standpipe and a cover. A sidewall of the check valve extends around the inner standpipe, and an end wall of the check valve is positioned over the inner standpipe. A sidewall of the cover extends around the outer standpipe, and an end wall of the cover is positioned over the outer standpipe.

An electronic solenoid air vent according to an embodiment of the present invention comprises: a nozzle for discharging the air in the air vent to the outside; and a nozzle shut-off for controlling the opening and closing of the nozzle, wherein the nozzle shut-off includes a magnet and a solenoid which spaces the magnet apart from the nozzle in response to the volume of the air in the air vent.

A vent valve for a fuel system includes a float, a flapper assembly and an orifice plate. The flapper assembly has a flapper and a seal mounted on or fixed to the flapper. The flapper assembly can be movably engaged with the float. The orifice plate can have a plate body that includes a nipple portion extending to a terminal end that defines a valve seat. The valve seat comprises an orifice having splines arranged around an outer diameter thereof. The seal is configured to selectively engage the valve seat between a sealed, closed position and an unsealed, open position. The splines facilitate movement of the seal from the closed position to the open position with reduced reopening force.

Apparatuses, systems, and methods are disclosed for a valve. An apparatus includes a valve that includes an actuator. The apparatus includes a container coupled to the valve and shaped to receive a fluid. The container includes an inlet, an outlet, and a first magnetic material. The apparatus includes a float positioned within the container. The float includes a second magnetic material and a reservoir. The actuator is actuated to open the valve at a first position and close the valve at a second position based on a magnetic interaction between the first and second magnetic material, a fluid level within the container, and a fluid level within the reservoir.

Apparatuses, systems, and methods are disclosed for a valve. An apparatus includes a valve that includes an actuator and a first magnetic material. The apparatus includes a container that includes an inlet and a float assembly. The actuator is actuated to one of open the valve at a first position and close the valve at a second position responsive to a magnetic force between a second magnetic material and a first magnetic material based on a position of the float assembly within the container.