A lubricator for a plunger lift system includes a tubular body, a bumper housing, a bumper sub, a first spring, and a second spring. The bumper housing is disposed in the tubular body and has a chamber, a lower end, and an upper end. The lower end is open to receive an upper end of a shift valve of a bypass plunger. The bumper sub has a lower end and an upper end and is slidably disposed in the chamber of the bumper housing. The first spring is disposed in the chamber to absorb an impact force applied to the bumper sub by the shift valve. The second spring is disposed in the tubular body to absorb an impact force applied to the lower end of the bumper housing by a plunger body of the bypass plunger.

A valve includes a housing and a plunger. The housing defines a chamber, a set of ports, and a set of conduits. The plunger is disposed within the chamber and is configured to be moved to an actuated state in which the set of ports are fluidly coupled to each other through a first section of the chamber to define a first passageway and the set of conduits are fluidly coupled to each other through a second section of the chamber to define a second passageway. In the actuated state, the valve facilitates an inflow of a lubricant into a system through the first passageway to cause a concomitant purge and release of a used lubricant from the system through the second passageway.

A valve includes a housing and a plunger. The housing defines a chamber, a set of ports, and a set of conduits. The plunger is disposed within the chamber and is configured to be moved to an actuated state in which the set of ports are fluidly coupled to each other through a first section of the chamber to define a first passageway and the set of conduits are fluidly coupled to each other through a second section of the chamber to define a second passageway. In the actuated state, the valve facilitates an inflow of a lubricant into a system through the first passageway to cause a concomitant purge and release of a used lubricant from the system through the second passageway.

A self-lubricating connector with a housing having a contact receiving cavity with a contact provided therein. A lubricating device is positioned in the housing proximate the contact. The lubricating device extends into the contact receiving cavity and has lubricant provided therein. The lubricant from the lubricating device is deposited or on the outside surface of the contact as the contact is moved between the first position and the second position, reducing wear on the contacts as the contacts are moved between the first position and the second position.

A self-lubricating connector with a housing having a contact receiving cavity with a contact provided therein. A lubricating device is positioned in the housing proximate the contact. The lubricating device extends into the contact receiving cavity and has lubricant provided therein. The lubricant from the lubricating device is deposited or on the outside surface of the contact as the contact is moved between the first position and the second position, reducing wear on the contacts as the contacts are moved between the first position and the second position.

A self-lubricating connector with a housing having a contact receiving cavity with a contact provided therein. A lubricating device is positioned in the housing proximate the contact. The lubricating device extends into the contact receiving cavity and has lubricant provided therein. The lubricant from the lubricating device is deposited or on the outside surface of the contact as the contact is moved between the first position and the second position, reducing wear on the contacts as the contacts are moved between the first position and the second position.

A self-lubricating connector with a housing having a contact receiving cavity with a contact provided therein. A lubricating device is positioned in the housing proximate the contact. The lubricating device extends into the contact receiving cavity and has lubricant provided therein. The lubricant from the lubricating device is deposited or on the outside surface of the contact as the contact is moved between the first position and the second position, reducing wear on the contacts as the contacts are moved between the first position and the second position.