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US 11,781,397 B2Granted
Integral check valve lock open device for oil and gas equipment
OwnerGeorge Todd Lowry, Christopher Len Jacksoninventors
Life of this patent
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Abstract
An inventive lock open device for use with a poppet type check valve is disclosed. The device permits bidirectional flow of fluid or gas by defeating the check valve sealing device which permits hydrostatic testing without the need for check valve disassembly or the need for additional tooling.
Claims18
A lock open device comprising:
- a locking device body that is attached to a poppet check valve, wherein during a normal operation of the poppet check valve, a poppet of the poppet check valve is attached to a seat of the poppet check valve;
- a locking screw that is positioned inside the locking device body and is in contact with the poppet;
- and
- a locking screw knob attached to the locking screw, wherein based on a rotation of the locking screw knob in a first direction, a force is applied against the poppet by the locking screw and the poppet is lifted from the seat, thereby modifying the poppet check valve from the normal operation to a locked open operation, and wherein the lifting of the poppet from the seat results in bidirectional flow of fluid or gas in the poppet check valve.
1 more element
An integral lock open device for use with a poppet check valve comprising
- a) a check valve body having an inlet connection end and an outlet connection end, a bonnet attached to a poppet and a seat;
- and
- b) a lower section housing a locking body device together with a socket head cap screw, a poppet lock screw, a locking screw knob, a lock set screw, and a lock screw stop.
A device comprising:
- a poppet check valve comprising a poppet and a seat, wherein during a normal operation of the poppet check valve, the poppet is attached to the seat;
- and
- a lock open device attached to the poppet check valve, wherein the lock open device comprising:
- a locking device body that is attached to the poppet check valve;
- a locking screw that is positioned inside the locking device body and is in contact with the poppet;
- and
- a locking screw knob attached to the locking screw, wherein based on a rotation of the locking screw knob in a first direction, a force is applied against the poppet by the locking screw, and the poppet is lifted from the seat, thereby modifying the poppet check valve from the normal operation to a locked open operation, and wherein the locked open operation results in bidirectional flow of fluid or gas in the poppet check valve.
4 more elements
Dependencies are inferred from the claim text.