Importance

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Abstract

A shear valve assembly that includes a stator element having a body, a stator face and at least a first stator passage and a second stator passage extending through the stator body. The first passage and the second passage terminate at the stator face at a respective first stator port and a respective second stator port. The valve further includes a rotor element that defines a rotor face configured for fluid-tight contact against the stator face at a rotor/stator interface. The rotor face defines a first rotor port and a spaced second rotor port, and a rotor body thereof defines a first subterranean passage extending fully beneath the plane of the rotor face. One end of the subterranean passage terminates at the first rotor port at the rotor face surface, while an opposite end thereof terminates at the second rotor port at the rotor face. The rotor face and the stator face is rotatable about a rotation axis relative one another between a first position and a second position. In the first position, the first subterranean passage fluidly couples the first stator port and the second stator port with the first rotor port and the second rotor port, enabling fluid flow between the first stator passage, through the first subterranean passage, and the second stator passage. In the second position, the first subterranean passage is fluidly decoupled from at least one of the first stator port and the second stator port, preventing flow therethrough.

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First Claim