Abstract: A connector arrangement for a fluid system includes a fuel injector that defines a first fluid passage having a connector, a pipe that is engageable with the connector of the first fluid passage, preferably to form a high pressure seal, and a nut arranged to connect the pipe to the connector of the first fluid passage. A chamber is defined between the nut and the fuel injector, such chamber serving to collect leaked fluid from the first fluid passage. The fuel injector is provided with a second fluid passage having a first end in communication with the chamber and a second end in communication with a low pressure drain such that leaked fuel is provided with a drain path.

Abstract: A connector arrangement for a fluid system includes a fuel injector that defines a first fluid passage having a connector, a pipe that is engageable with the connector of the first fluid passage, preferably to form a high pressure seal, and a nut arranged to connect the pipe to the connector of the first fluid passage. A chamber is defined between the nut and the fuel injector, such chamber serving to collect leaked fluid from the first fluid passage. The fuel injector is provided with a second fluid passage having a first end in communication with the chamber and a second end in communication with a low pressure drain such that leaked fuel is provided with a drain path.

Abstract: The union includes a cylindrical hollow body having at a rear end means for connection to a pipe, and at a front end a tubular nozzle able to be received in a housing formed in a bore on the periphery of an injector, the body bearing means for retaining the tubular nozzle in the housing. The retaining means include two elastic tabs in an arc of circle extending on the periphery of the body concentrically with the axis (A-A) of this. Each of the tabs defines with the periphery of the said body a slot in an arc of circle open on one side. The tabs are able to co-operate with a groove provided inside the bore of the injector. The union in accordance with the invention is used to connect an injector of an internal combustion engine to a fuel return pipe.