Abstract: A plug assembly is configured for use in a valve. These configurations may include a plug with a sealing surface that can interface with a seat to regulate flow of fluid through the valve. A keyed shaft may insert into the plug. The keyed shaft can rotate to change location of key members in the plug. In one implementation, a technician can rotate the keyed shaft from a first position to a second position at which the key members couple the plug with the valve body.

Abstract: A regulating assembly with a valve stem and a valve plug is configured for use in a valve. The configurations may optimize natural frequency to address concerns that operators have with vibrations in devices on their process lines. The valve plug may have a body that narrows from the top and the bottom towards its midline to form an hourglass shape. Reinforcing structure may find use to strengthen or stiffen the body without adding additional mass to the device. This reinforcing structure may include ribs, for example, that circumscribe the center axis. A matrix or lattice structure may prevail as the reinforcing structure as well.

Abstract: A plug assembly is configured for use in a valve. These configurations may include a plug with a sealing surface that can interface with a seat to regulate flow of fluid through the valve. A keyed shaft may insert into the plug. The keyed shaft can rotate to change location of key members in the plug. In one implementation, a technician can rotate the keyed shaft from a first position to a second position at which the key members couple the plug with the valve body.

Abstract: A packing assembly is configured for use in a valve. These configurations may include a wear part that surrounds a valve stem. The wear part may prevent contact between the valve stem and a packing follower or other part in the valve.

Abstract: A regulating assembly with a valve stem and a valve plug is configured for use in a valve. The configurations may optimize natural frequency to address concerns that operators have with vibrations in devices on their process lines. The valve plug may have a body that narrows from the top and the bottom towards its midline to form an hourglass shape. Reinforcing structure may find use to strengthen or stiffen the body without adding additional mass to the device. This reinforcing structure may include ribs, for example, that circumscribe the center axis. A matrix or lattice structure may prevail as the reinforcing structure as well.