Importance

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Abstract

A flow valve having a male flange for joining an adjacent female coupling valve or pipe section to form a continuous fluid conduit. The flow valve having a replaceable flange which is used for connecting one fluid conduit to another to form a continuous flow path where the flange has components which prevent interchangeability. A female coupling valve or pipe section defining a duct for communication of a fluid with a locking arrangement for locking the male flow valve in the adjacent female coupling valve or pipe section. Protrusions are provided on either an inside surface of the female coupling valve or pipe section or on an outside surface of the flow valve flange and corresponding recesses are provided on the other with the recesses and protrusions being cooperatively shaped arranged to allow insertion of the flow valve into the female coupling valve or pipe section to the locking position only when said at least one recess and said at least one protrusion match.

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First Claim