Patent ID: 9719601
Date: 2017-08-01
CPC Classifications: F16K

Claim:
1. A canted, single vane, three-way butterfly valve, comprising a housing having an inlet port, an outlet port, a straight bore connecting both inlet and outlet ports, a third port located perpendicular to said straight bore, a tiltable vane having an oval plenary surface, a shaft located near the center of said plenary surface and being supported by suitable openings within said housing, said shaft being capable of rotating said vane of about ninety degrees to either side preventing fluid from passing from the inlet port to the third port, or, from the outlet port to said third port, the said vane has a central, spherical indentation constituting an inner wall configured to help guide fluid from the central straight bore into the third port, and wherein the radius of said spherical indentation matches the radius of said perpendicular third port, said spherical indentation has an outer wall surface which geometry closely matches the wall surface of the straight housing bore in order to discourage fluid flow from by-passing the outer periphery of said vane when it is controlling desired fluid flow between horizontal ports and said perpendicular third port.