A handle assembly is provided for an outlet valve of a tank car wherein the outlet valve has a valve stem rotatable about an axis and is operative to open and close the outlet valve. The handle assembly includes a valve handle for manually opening the outlet valve, a rotatable shaft coupled to the handle, and a coupling coupled to the outlet valve and selectively coupleable to the shaft. A valve rotation control structure includes a first movement control component on one of the coupling and the shaft. The valve rotation control structure is configured to permit the coupling or shaft to move parallel to the axis of the valve stem between a first locked position and a second rotatable position and to rotate about the axis of the valve stem between a first valve closed position and a second valve open position at the second rotatable position.

A plug valve including a valve body defining an internal cavity, a first passage, and a second passage, a plug defining a third passage and being rotatable within the internal cavity, and an insert extending within the internal cavity between the valve body and the plug. The insert defines an interior surface and an opening aligned with the first passage of the valve body. The insert may also define a sealing surface extending around the opening and standing in relief against the interior surface to sealingly engage the plug. In addition to, or instead of, the sealing surface, the insert may define a projection at least partially defining the interior surface. In addition, a boot may be connected to the valve body and interlocked with the projection to prevent, or at least reduce, rotation of the insert relative to the valve body when the plug rotates within the internal cavity.

A plug valve including a valve body defining an internal cavity, a first passage, and a second passage, a plug defining a third passage and being rotatable within the internal cavity, and an insert extending within the internal cavity between the valve body and the plug. The insert defines an interior surface and an opening aligned with the first passage of the valve body. The insert may also define a sealing surface extending around the opening and standing in relief against the interior surface to sealingly engage the plug. In addition to, or instead of, the sealing surface, the insert may define a projection at least partially defining the interior surface. In addition, a boot may be connected to the valve body and interlocked with the projection to prevent, or at least reduce, rotation of the insert relative to the valve body when the plug rotates within the internal cavity.

A coolant regulator is provided including a housing having a coolant chamber and a rotary vane arranged therein, a drive shaft leading out of the coolant chamber that rotates the rotary vane, and a shaft seal which seals the coolant chamber from the surroundings. The shaft seal seals against a housing inner lateral surface of a housing recess and sealingly encloses the drive shaft. An end portion of the shaft seal facing the rotary vane is a circular ring that, under elastic deformation of the bead thereof, seals against the housing inner lateral surface on the outer circumference and encompasses a spreading ring on the inner circumference that limits an axial shift of the shaft seal toward the rotary vane to a dimension d<s. s is the axial distance between the bead center of the undisplaced shaft seal and the opening of the housing recess facing the rotary vane.

A system for supplying fracturing fluid to a fracturing tree coupled to a wellhead comprising: a zipper module having a lower block with a first opening configured to receive the fracturing fluid, the lower block being independently rotatable at a swivel assembly around a vertical axis relative to the lower block; an upper block with a second opening configured to dispel the fracturing fluid, the upper block being independently rotatable at a swivel connection around the vertical axis; an internal flow path between the upper block and the lower block; and a fluid conduit between the zipper module and the fracturing tree comprising at least one pipe, wherein the at least one pipe defines a first straight flow path between the zipper module and the fracturing tree.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.

A coolant regulator is provided including a housing having a coolant chamber and a rotary vane arranged therein, a drive shaft leading out of the coolant chamber that rotates the rotary vane, and a shaft seal which seals the coolant chamber from the surroundings. The shaft seal seals against a housing inner lateral surface of a housing recess and sealingly encloses the drive shaft. An end portion of the shaft seal facing the rotary vane is a circular ring that, under elastic deformation of the bead thereof, seals against the housing inner lateral surface on the outer circumference and encompasses a spreading ring on the inner circumference that limits an axial shift of the shaft seal toward the rotary vane to a dimension d<s. s is the axial distance between the bead center of the undisplaced shaft seal and the opening of the housing recess facing the rotary vane.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.

An apparatus according to which a subterranean formation in which a wellbore extends is hydraulically fractured, the apparatus comprising first and second manifolds, the first manifold including first and second flow lines adapted to be in fluid communication with first and second pumps, respectively, the first pump being adapted to pressurize fluid received from the first flow line, and the second pump being adapted to pressurize fluid received from the second flow line, and the second manifold including a third flow line adapted to convey pressurized fluid from the first and second pumps to the wellbore to hydraulically fracture the subterranean formation in which the wellbore extends. The apparatus is adapted to be connected to another apparatus used to hydraulically fracture the subterranean formation in which the wellbore extends by moving one, or both, of the first and second flow lines relative to the third flow line.