Methods, apparatus, systems, and articles of manufacture of valve packing apparatus and related methods are described. An apparatus includes a cartridge including packing components and a spring. The cartridge is dimensioned to fit in a bore of a bonnet of a valve. A cap is coupled to the cartridge to retain the packing components and the spring. The cap is to compress the packing components and the spring to a predetermined load in response to the cartridge being fastened to the bonnet of a valve.

Methods, apparatus, systems, and articles of manufacture of valve packing apparatus and related methods are described. An apparatus includes a cartridge including packing components and a spring. The cartridge is dimensioned to fit in a bore of a bonnet of a valve. A cap is coupled to the cartridge to retain the packing components and the spring. The cap is to compress the packing components and the spring to a predetermined load in response to the cartridge being fastened to the bonnet of a valve.

The valve includes a valve body forming a valve opening, an actuator flange, a valve stem configured to be disposed through the actuator flange, and an end stop plate. The end stop plate is configured to interface with the valve stem such that rotations of the valve stem and the end stop plate around a rotation axis of the valve are coupled. The end stop plate is further configured to interface with the actuator flange such that a rotation of the end stop plate around the rotation axis is limited in at least one direction and, in at least a portion of the rotation of the end stop plate around the rotation axis, the end stop plate is prevented from translating along the rotation axis away from the valve opening. Thus, an interface between the end stop plate and the actuator flange performs multiple functions.

The valve includes a valve body forming a valve opening, an actuator flange, a valve stem configured to be disposed through the actuator flange, and an end stop plate. The end stop plate is configured to interface with the valve stem such that rotations of the valve stem and the end stop plate around a rotation axis of the valve are coupled. The end stop plate is further configured to interface with the actuator flange such that a rotation of the end stop plate around the rotation axis is limited in at least one direction and, in at least a portion of the rotation of the end stop plate around the rotation axis, the end stop plate is prevented from translating along the rotation axis away from the valve opening. Thus, an interface between the end stop plate and the actuator flange performs multiple functions.