Patent ID: 6059148
Filing Date: 2000-05-09
Classification: F16K,G01F

Abstract:
A metering device comprising:a housing having a material inlet and a material outlet;at least one rotatable ball member having a spherical outer surface and at least one transverse bore, the rotatable ball member being captured between two opposed seats disposed in said housing, each seat having at least one passage communicable with one of the material inlet or the material outlet and having a seat face of essentially semispherical configuration complimentary to the spherical outer surface of said at least one rotatable ball member;a sealess flow metering assembly disposed in said transverse bore of said at least one rotatable ball, said sealess flow metering assembly comprising spaced sealing seats, and a shuttle member movably disposed for selective engagement with said sealing seats; andan adjustment assembly disposed in said housing to adjust the position of at least one of said two opposed seats relative to the housing such that the essentially semispherical surface of said at least one of said two opposed seats is urged into mating engagement against the complimentary outer surface of said rotatable ball to enable material flowing from said material inlet to said material outlet to cool the complementary surfaces of the rotatable ball and the opposed seats.