High-pressure ball valve
AssigneeGebr. Eickhoff, Maschinenfabrik und Eisengiesserei m.b.H.
InventorKarl Hotger
Life of this patent
Estimating the term…
Abstract
A high-pressure ball valve includes a valve housing with a bore that sealingly receives a cylindrical extension of a valve member. An inlet bore extending to the bore in the valve housing has a bottom seat against which a ball can seal off the inlet bore. The cylindrical extension has a pocket to receive the ball while engaging a stem that extends through a bore in the valve member against a piston of a single-acting piston and cylinder assembly. An outlet bore extends in the valve housing to the bore therein for delivering the fluid passing into the housing from the outlet bore.
Claims6
A high-pressure ball valve comprising the combination of a valve housing having a valve bore formed with an outlet bore at the periphery thereof, said valve bore extending to an inlet bore having a seat surface facing said valve bore, a valve member including a cylindrical extension extending from a tapered and substantially frusto-conical end face, said cylindrical extension having a length to sealingly engage in said valve bore and extend to the outlet bore at the periphery thereof, said cylindrical extension further having a central bore extending to an enlarged pocket within the extended end thereof, a ball to sealingly fit in said enlarged pocket of said cylindrical extension against the central bore therein opposite the seat surface of said inlet bore, a stem received in the central bore of the cylindrical extension for displacing said ball from the pocket therein against the seat surface of said inlet bore, and a hydraulically-actuated piston for displacing said stem along the bore in said valve member.
Dependencies are inferred from the claim text.