Obturator valve for a coupling device for pipes

摘要

A valve (2) is concerned comprising an obturator (16) maintained in a resting position against a seat (14) through the action of a first force generated by pre-loading means (38), further comprising means (28) for rotating the obturator (16) to place the valve in an open or closed position, characterized in that the valve comprises means (26, 40) for translating the obturator to move the obturator (16) such that a gap (j1) is created between the obturator (16) and the seat (14), the translating means being adapted to drive the obturator (16) to move in translation independently of the rotational movement of that obturator (16).

主权项

1. An obturator valve for a pipe coupling device which comprises:
at least one valve housing; a flow passage which extends within the valve housing; an obturator which is located in the valve housing and which in a first position engages a seat positioned around the flow passage, the obturator being held in the first position against the seat through the action of a first force generated by a pre-loading means; means for rotating the obturator between an open position of the valve in which a fluid can flow through the flow passage and a closed position of the valve in which the fluid is prevented from flowing through the flow passage; and translating means for moving the obturator in translation from the first position against the seat to a second position in which a gap is created between the obturator and the seat; wherein the translating means is adapted to move the obturator in translation independently of the rotational movement of the obturator and the rotating means is adapted to rotate the obturator independently of the translational movement of the obturator.