Importance

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Abstract

A rotary valve includes a rotor having at least one internal flow passageway therein extending between ports for providing communication between various pairs of flow passageways in the body of the valve. The rotor includes an annular surface for sealing engagement with the body, at least one of the rotor ports being disposed on the annular surface. A continuous resilient seal is disposed between the sealing surfaces of the rotor and the body to provide static and dynamic sealing. A spherical surface disposed between the rotary drive and the rotor applies axial pressure to the rotor, the surface accommodating rocking of the rotor to insure uniform loading thereof. Further, loading of the seal between the rotor and body is adjustable externally of the valve.

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First Claim