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.

According to various embodiments, a toilet system includes a toilet fill valve and a bowl fill valve that is configured to attach directly to the toilet fill valve. The toilet fill valve can include a body having an extended portion that forms a bowl fill outlet port, a water inlet configured to couple to a water source, and a tank water outlet configured to output water to a toilet tank. The bowl fill valve can include a bowl fill valve inlet port that is configured to mate directly to the bowl fill outlet port of the body of the toilet fill valve, a bowl fill valve outlet port, a protrusion configured to insert into a recess of the toilet fill valve and retain the bowl fill valve to the toilet fill valve, a slot that is configured to receive an extension of the toilet fill valve, and a water flow adjustment handle.

Plumbing fitting assemblies are described. The plumbing fitting assemblies use a male and female fitting combination that enables a user or installer to make a sealed connection on an internal diameter of a female part or receiving end by way of an o-ringed shank on a male part or insert end. A connecting device is rotatably attached to the male end. The connecting device also engages to an outer surface of the female part such that the sealed fitting assemblies will not disconnect under normal pressure of a fluid or air working through the assemblies.

According to various embodiments, a toilet bowl fill valve includes a valve body that has a cavity. A valve may be inserted into the cavity of the valve body. A handle may be integrated with the valve, and the handle may facilitate manual adjustment of the valve. The valve body attached directly to a body of a toilet fill valve.

A fill valve assembly for a toilet tank is described. The fill valve assembly includes a two part design. The fill valve assembly includes a fill valve that connects or engages with a shank. A connection between the fill valve and the shank is located in an interior of the tank, which is easily accessed. The fill valve may be easily replaced by disconnecting the fill valve from the shank.

A fully-integrated flow-control valve assembly for top-filled fuel tanks incorporates both a float valve assembly and a shut-off valve assembly in a single unit that screws into a threaded aperture in the top of the fuel tank. Whereas all other systems having similar function rely on an inlet valve and a level control/vent positioned apart from one another and intercoupled with a bleed line that runs either inside or outside the fuel tank, the device of the present invention directly mounts the two devices together and allows a simple installation. There is no need for a line that couples two remotely positioned units of the prior art flow-control assemblies.

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.

Plumbing fitting assemblies are described. The plumbing fitting assemblies use a male and female fitting combination that enables a user or installer to make a sealed connection on an internal diameter of a female part or receiving end by way of an o-ringed shank on a male part or insert end. A connecting device is rotatably attached to the male end. The connecting device also engages to an outer surface of the female part such that the sealed fitting assemblies will not disconnect under normal pressure of a fluid or air working through the assemblies.

Plumbing fitting assemblies are described. The plumbing fitting assemblies use a male and female fitting combination that enables a user or installer to make a sealed connection on an internal diameter of a female part or receiving end by way of an o-ringed shank on a male part or insert end. A connecting device is rotatably attached to the male end. The connecting device also engages to an outer surface of the female part such that the sealed fitting assemblies will not disconnect under normal pressure of a fluid or air working through the assemblies.