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.

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.

An automatic leak-proof water inlet device for a water tank, including an inner cylinder, an outer cylinder set, a floating casing and an assist floating set; wherein the outer cylinder set is consisted of an outer cylinder, a cover, a first connecting rod, a second connecting rod, an adjusting rod, an interlocking rod, an insert, a water stopper, a first spring and a second spring; the assist floating set includes a supporting seat and a float; by the above structure, it could stop water leakage of water tank automatically and close water inlet in time, to thereby avoid the waste of water resources.

An automatic leak-proof water inlet device for a water tank, including an inner cylinder, an outer cylinder set, a floating casing and an assist floating set; wherein the outer cylinder set is consisted of an outer cylinder, a cover, a first connecting rod, a second connecting rod, an adjusting rod, an interlocking rod, an insert, a water stopper, a first spring and a second spring; the assist floating set includes a supporting seat and a float; by the above structure, it could stop water leakage of water tank automatically and close water inlet in time, 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.