Valve cartridge for pump systems
AssigneeNational Oilwell Varco, L.P.
InventorAdrian Marica
Life of this patent
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Abstract
An illustrative valve cartridge for a pump system is disclosed. In one example the valve cartridge includes a cartridge body, a mounting flange operatively coupled to the cartridge body, wherein the mounting flange is adapted to be coupled to a housing of a pump, a valve member that is adapted to sealingly engage a valve seat within the pump housing and an actuator positioned within the cartridge body, wherein the actuator is operatively coupled to the valve member via a connector and wherein the actuator is adapted for selectively moving the valve member relative to the valve seat when the valve cartridge is operatively coupled to the pump housing.
Claims27
A valve cartridge for a pump, comprising:
- a cartridge body;
- a mounting flange operatively coupled to said cartridge body, said mounting flange adapted to be coupled to a housing of said pump;
- a valve member that is adapted to sealingly engage a valve seat;
- and
- an actuator positioned within said cartridge body, said actuator operatively coupled to said valve member via a connector, wherein said actuator is adapted for selectively moving said valve member relative to said valve seat.
A valve cartridge for a pump, comprising:
- a cartridge body;
- a mounting flange operatively coupled to said cartridge body, said mounting flange adapted to be coupled to a housing of said pump;
- a valve member that is adapted to sealingly engage a valve seat, wherein said valve member has a curved sealing surface that, relative to a centerline of said valve member, is an inwardly curved concave sealing surface;
- an actuator positioned within said cartridge body, said actuator operatively coupled to said valve member via a non-rigid connector, wherein said actuator is adapted for selectively moving said valve member relative to said valve seat;
- and
- a spring positioned between said cartridge body and said valve member.
A valve cartridge for a pump, comprising:
- a cartridge body;
- a mounting flange operatively coupled to said cartridge body, said mounting flange adapted to be coupled to a housing of said pump;
- a valve member that is adapted to sealingly engage a valve seat, wherein said valve member has a curved sealing surface that, relative to a centerline of said valve member, is an inwardly curved concave sealing surface;
- an actuator positioned within said cartridge body, said actuator operatively coupled to said valve member via a cable, wherein said actuator is adapted for selectively moving said valve member relative to said valve seat;
- and
- a spring positioned between said cartridge body and said valve member, wherein said spring is substantially tapered along its axial length, and wherein a smaller end of said tapered spring is positioned proximate said valve member.
Dependencies are inferred from the claim text.