A valve assembly (90) comprises a valve (94) and a fitting (110).

The valve assembly includes a female coupling (44) and a male coupling (42), each of which defines a fluid passageway.

The valved fitting of the invention is particularly useful on a service valve block for an air conditioning system.

A flexible valve for a connectors is described.

The back flow prevention valve prevents back flow of liquid through the fitting.

The connector also has a collapsible valve disposed within the cavity.

The pin runs through the upper connector, and is then connected to the valve.

A valve adapter for use in a valve of the type openable and closeable by rotating a valve member includes an adapter portion arranged and configured to receive each of a T-wrench and a square-adapter wrench.

This connector is provided with a housing and a valve.

The valve may contain a tissue connector and a housing to be connected thereto.

A compression connector for sealingly connecting a fluid line(12) to a plumbing fitting (14), valve or connector.

The valve is seated within a valve housing (222) defined by the hub portion (200) of the sheath (200).

When a force between the upper connector and the vale is greater than the ultimate strength of the pin, the pin breaks, and the upper connector is separated from the valve.

An end of the upper connector sleeves the valve.

The valve body stop and the valve adapter stop cooperate to limit movement of the valve adapter relative to the valve body and the collar resists deflection of the valve body stop.