Patent ID: 11927068
Assignee: CAMERON INTERNATIONAL CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 17:
18. A method, comprising:
actuating an axial member to move along an axial path of travel in a frac head, wherein the frac head comprises a top side configured to face a first valve and a bottom side configured to face a wellbore, wherein the frac head comprises a first port through the top side, a second port through the bottom side, a third port through a lateral side, and a cavity between the first, second, and third ports, wherein a first fluid flow path extends through the cavity between the first and second ports along a wellbore axis of the wellbore, a second fluid flow path extends between the cavity and the third port in a lateral direction crosswise to the first fluid flow path and the wellbore axis, and the cavity is enlarged at least relative to the first and second ports, wherein a flapper valve is disposed within the cavity adjacent the first port, wherein the axial path of travel is parallel to a central axis of the first port; and
engaging the axial member with the flapper valve at an offset distance relative to a rotational axis of the flapper valve to cause rotation of the flapper valve between an open position and a closed position to open and close the fluid flow path, wherein the closed position of the flapper valve is configured to block fluid flow between the cavity and the first valve while allowing fluid flow through the cavity between the first and third ports.