An apparatus comprises a first number of splines located near a first end of a first joint section and a second number of splines located near a second end of a second joint section. The first number of splines extends in an axial direction of the first joint section and spans a circumferential surface of the first joint section. Each of the first number of splines has a base, a tip, and a pair of flanks that extends from the base to the tip and forms an acute angle. Each of the first number of splines are configured to be received between adjacent pairs of splines in the second number of splines as the first end of the first joint section and the second end of the second joint section are joined.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

A protection device for protecting the potable water from contamination caused by backflow, comprises a housing with a potable water inlet, a first funnel, which is arranged at a distance to and aligned below the potable water inlet, and a second funnel, which is arranged at a distance to and aligned below the first conical funnel, and via which the water can be drained. An opening in the housing is formed for the discharge of the backflowing water, to which the back-flowing water can flow between the first and the second funnel.

The present invention relates to a kit of parts (1), comprising plurality of hose connection parts (2,3) selectable from, first hose connection parts (2) comprising one fluid inlet (5) and one fluid outlet (8), second hose connection parts (3) comprising two fluid inlets (7,8) and one fluid outlet (9), and third hose connection parts comprising three fluid inlets and one fluid outlet, which kit of parts (1) is suitable for assembly a hose connection (61,82,83,64) having at least a first and second fluid inlet and a fluid outlet, according to any one of three configurations. The invention also relates to a fuel dispensing unit (85) for refueling vehicles and a method for assembly a hose connection.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

A torque limited fitting is provided having a head and a body, which in certain embodiments may be assembled by an operator. The body of the torque limited fitting has a passageway therethrough for receiving and removably holding tubing. The torque limited fitting may be adapted for use with a flat bottom port, such as in an analytical instrument, like liquid chromatography, gas chromatography, ion chromatography, or in in vitro diagnostic systems.

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.

An apparatus for connecting two pipes in fluid communication includes a connector body having opposing open ends, with each open end configured for receiving a free end of a pipe, and a mechanical interlock arrangement for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body. A mechanical seal arrangement provides a metal-to-metal seal between a pipe inserted into one of the open ends and the connector body.

An apparatus for connecting two pipes in fluid communication is provided. The apparatus comprises a connector body having opposing open ends, each open end configured for receiving a free end of a pipe; a mechanical interlock arrangement, for preventing or limiting axial movement of the connector body relative to a free end of a pipe when the free end of the pipe is received in an open end of the connector body; and a mechanical seal arrangement for providing a metal-to-metal seal between a pipe inserted into one of said open ends and the connector body.