A system and method of performing maintenance on a wing cock valve coupled to a pressurized gas delivery pipe is provided. The method removing a plug from a port on the valve. A threaded portion of a grease tool is coupled to the port, the grease tool having a body coupled to the threaded portion and a fitting on an opposite end, the fitting, body and threaded portion defining a flow path. A hose is coupled on a grease gun to the fitting; and actuating the grease gun to flow a grease from a reservoir through the flow path and into the valve.

A grease gun with an adjustable operating angle includes: a grease barrel having a first annular assembling portion and a first annular pivot portion; a gun body having a second annular assembling portion facing the first annular assembling portion and a second annular pivot portion to be pivotally disposed on the first annular pivot portion; a positioning ring fixed to the second annular assembling portion and having annularly arranged positioning cavities and facing the first annular assembling portion; and a positioning unit having a positioning member movable between a locked position and a release position, and the positioning member having a positioning portion to be inserted into or disengaged from the positioning cavities. The grease barrel and the gun body can be rotated and fixed relative to each other after rotation to adjust the angle between the two, which consequently reduces the space limitation on the grease feeding operation.

A grease gun with an adjustable operating angle includes: a grease barrel having a first annular assembling portion and a first annular pivot portion; a gun body having a second annular assembling portion facing the first annular assembling portion and a second annular pivot portion to be pivotally disposed on the first annular pivot portion; a positioning ring fixed to the second annular assembling portion and having annularly arranged positioning cavities and facing the first annular assembling portion; and a positioning unit having a positioning member movable between a locked position and a release position, and the positioning member having a positioning portion to be inserted into or disengaged from the positioning cavities. The grease barrel and the gun body can be rotated and fixed relative to each other after rotation to adjust the angle between the two, which consequently reduces the space limitation on the grease feeding operation.

A hand-held lubrication device that allows for both one- and two-handed operation. The device utilizes a front-facing mounted trigger that actuates a rear-mounted plunger via two tie rods.

A hand-held lubrication device that allows for both one- and two-handed operation. The device utilizes a front-facing mounted trigger that actuates a rear-mounted plunger via two tie rods.

A pipe doping system for applying pipe dope to the external threads of a pin end member may comprise a pump fluidly coupled to a dope-containing reservoir and a dope manifold, the pump positioned to pump pipe dope from the reservoir to the dope manifold; an ejector coupled to the dope manifold and positioned to supply a fixed volume of pipe dope from the dope manifold to a dope distribution line; a dope applicator, the dope applicator fluidly coupled to a dope distribution line positioned to deposit pipe dope on the external threads, the dope applicator being located apart from the ejector and including a nozzle positioned to receive a flow of pipe dope from the dope distribution line and apply the pipe dope onto the threaded connection. The system may include a power source to increase the pressure of the pipe dope as it is dispensed by the ejector.

A pipe doping system for applying pipe dope to the external threads of a pin end member may comprise a pump fluidly coupled to a dope-containing reservoir and a dope manifold, the pump positioned to pump pipe dope from the reservoir to the dope manifold; an ejector coupled to the dope manifold and positioned to supply a fixed volume of pipe dope from the dope manifold to a dope distribution line; a dope applicator, the dope applicator fluidly coupled to a dope distribution line positioned to deposit pipe dope on the external threads, the dope applicator being located apart from the ejector and including a nozzle positioned to receive a flow of pipe dope from the dope distribution line and apply the pipe dope onto the threaded connection. The system may include a power source to increase the pressure of the pipe dope as it is dispensed by the ejector.

A tip end face of a body part 13 is provided at a part in front of a discharge port with respect to a rotational direction of a worm wheel 2 with a protruding part 16, and a tip end face of the protruding part 16 is provided with a grease-pushing surface part 17 configured to push grease into concave portions of a worm wheel teeth 3 while raking and leveling the grease so that the grease is substantially uniform in a width direction and in a circumferential direction of the worm wheel teeth 3. Also, the tip end face of the body part 13 is provided at a rear part of the discharge port with respect to the rotational direction of the worm wheel 2 with a protruding wall part 18 for preventing the grease 1 from moving rearwards with respect to the rotational direction of the worm wheel 2.

A tip end face of a body part 13 is provided at a part in front of a discharge port with respect to a rotational direction of a worm wheel 2 with a protruding part 16, and a tip end face of the protruding part 16 is provided with a grease-pushing surface part 17 configured to push grease into concave portions of a worm wheel teeth 3 while raking and leveling the grease so that the grease is substantially uniform in a width direction and in a circumferential direction of the worm wheel teeth 3. Also, the tip end face of the body part 13 is provided at a rear part of the discharge port with respect to the rotational direction of the worm wheel 2 with a protruding wall part 18 for preventing the grease 1 from moving rearwards with respect to the rotational direction of the worm wheel 2.

A system and method of performing maintenance on a wing cock valve coupled to a pressurized gas delivery pipe is provided. The method removing a plug from a port on the valve. A threaded portion of a grease tool is coupled to the port, the grease tool having a body coupled to the threaded portion and a fitting on an opposite end, the fitting, body and threaded portion defining a flow path. A hose is coupled on a grease gun to the fitting; and actuating the grease gun to flow a grease from a reservoir through the flow path and into the valve.