SHUT OFF VALVE

Brand	Owner	Address	Description
BUTTERFLY CAGE	YEARY & ASSOCIATES, INC.	Suite M3 1050 North State Street Chicago IL 60610	Shut off valve, namely, a shut off valve for steam, oil, gas and water pipelines;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A system and method for actuating a shut-off valve in a wellbore wherein the shut-off valve element can be positively closed before the pump is removed from the well. A hydraulic actuator component is operably associated with the shut-off valve to provide for selective isolation of the well by positive closing of the valve prior to removal of the pump and opening of the valve after replacement of a pump within the wellbore. The hydraulic actuator component has a balanced hydraulic design wherein the valve closure element may be moved toward an open or closed position by flow of hydraulic fluid through first and second hydraulic lines. When a repaired pump or replacement pump is placed into the well, the actuator is stabbed into a packer element to seat it. The hydraulic actuator assembly is then operated to open the shut-off valve, thereby reestablishing well operation.