Patent ID: 11873945
Assignee: DOWNING WELLHEAD EQUIPMENT, LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A system, comprising:
first and second lubricator valves, actuable to:
a first configuration in which the first lubricator valve is open and the second lubricator valve is closed; and
a second configuration in which the first lubricator valve is closed and the second lubricator valve is open;

a grease cylinder including:
an inlet via which grease is deliverable into the grease cylinder; and
an outlet via which grease is communicable to the first and second lubricator valves;

an inlet valve operably associated with the inlet and adapted to communicate grease to the inlet and to prevent, or at least reduce, backflow of grease out of the inlet through the inlet valve;
a piston extending at least partially within the grease cylinder; and
an actuator operably associated with the piston and adapted to stroke the piston:
back within the grease cylinder to deliver grease, via the inlet valve and the inlet, into the grease cylinder; and
forth within the grease cylinder to deliver grease, via the outlet, out of the grease cylinder and to:
a first process valve via the first lubricator valve when the first and second lubricator valves are in the first configuration; and
a second process valve via the second lubricator valve when the first and second lubricator valves are in the second configuration.