A tank device for a motor vehicle includes a tank container defined by a tank wall having at least one stop region, and at least one lever sensor arranged in the interior of the tank container. The at least one stop region is an end stop for the lever sensor to prevent adhesion of the lever sensor to the tank wall.

An apparatus for controlling a flow of a fluid, such as a drilling fluid or drilling mud, is disclosed. The apparatus may include: a valve member; and a float member mechanically coupled to the valve member and configured to operate on the valve member when fully submerged in a fluid. The coupled float member is configured to increase flow through the valve member as a density of the fluid decreases and to restrict flow through the valve member as the density of the fluid increases.

A leak-proof water valve includes a water inner tube, an outer tube group and a buoyant housing. When the sealing plug of the toilet tank is leaking, leak-proof structure of a buoyant housing for automatically detection is provided to stop the water inlet valve supplying water, so that a user could be aware of the leaking situation to thereby avoid the waste of water resources.

A tank device for a motor vehicle includes a tank container defined by a tank wall having at least one stop region, and at least one lever sensor arranged in the interior of the tank container. The at least one stop region is an end stop for the lever sensor to prevent adhesion of the lever sensor to the tank wall.

Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. In one embodiment, a toilet fill valve includes a float and arm assembly. The toilet fill valve is closed when the float and arm assembly is disposed in a first position. The toilet fill valve is open when the float and arm assembly is disposed in a second position. A side lever is associated with the float and arm assembly. The side lever includes an unlock position and a lock position. The side lever includes a hook that engages the float and arm assembly to restrict movement of the float and arm assembly when in the lock position and allow movement of the float and arm assembly when in the unlock position.

In at least some implementations, an assembly includes a float having a void with an inlet leading into the void in a first direction, and at least one retention surface that is not parallel to the first direction and a hinge received at least partially within the void. The hinge has at least one retention feature that cooperates with the at least one retention feature of the float to inhibit removal of the hinge from the float in a second direction opposite to the first direction, and the hinge is formed from a polymeric material. In at least some implementations, the hinge has a melting point similar to or lower than the melting point of the material of the float, and the hinge is formed separately from and is pressed into the void in the float.

Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. In one embodiment, a toilet fill valve includes a float/arm assembly. The toilet fill valve is closed when the float/arm assembly is disposed in a first position. The toilet fill valve being open when the float/arm assembly is disposed in a second position. A shuttle switch is associated with the float/arm assembly. The shuttle switch includes an unlock position and a lock position, wherein the shuttle switch fixes the float/arm assembly in the first position when the shuttle switch is in the lock position.

Embodiments for an automatic fluid shut off device having a float disposed in a fluid catch basin attached to a first end of a flexible cable movable in an opposite direction of rising fluid in the catch basin; a second flexible cable end extending to a fluid supply base and terminating adjacent to a restrained spider assembly, the spider assembly configured to be rotationally displaceable upon a force by the second flexible cable end in response to a rising fluid in the catch basin; the spider assembly pivotably connected to a shut-off valve; and the shut off valve retained in an open position while the spider assembly is restrained, and under a rotational force to close the shut-off valve upon activation of the spider valve in response to the force by the second flexible cable end.

Embodiments are provided for an automatic fluid shut off device having a float disposed in a fluid catch basin attached to a first end of a rod movable in a direction of rising fluid in the catch basin; a second rod end extending to a fluid supply base and terminating adjacent to a restrained latch arm end, the latch arm end configured to be pivotably displaceable upon a force by the second rod end in response to a rising fluid in the catch basin; the latch arm pivotably connected to a shut-off valve; and the shut off valve retained in an open position while the latch arm is restrained, and under a rotational force to close the shut-off valve upon a release of the latch arm in response to the force by the second rod end. The latch arm can be restrained by a latch arm retention notch extending downward and inward.

Disclosed are various embodiments of a lockable toilet fill valve and methods according to the present invention. In one embodiment, a toilet fill valve includes a float/arm assembly. The toilet fill valve is closed when the float/arm assembly is disposed in a first position. The toilet fill valve being open when the float/arm assembly is disposed in a second position. A shuttle switch is associated with the float/arm assembly. The shuttle switch includes an unlock position and a lock position, wherein the shuttle switch fixes the float/arm assembly in the first position when the shuttle switch is in the lock position.