Abstract: An embodiment includes a choke system comprising: a choke body; a gate having first and second sidewalls opposing one another; a first seat including a first channel and first conduits; a second seat coupling the second sidewall to the choke body and including a second channel; a third seat coupling the first sidewall to the choke body; a plug coupled to a bottom surface of the gate; a choke stem coupled to a top surface of the gate; wherein (a) the choke system is to convey fluid through the first channel and first conduits when the gate is open and fluid is pressurized in the second channel, and (b) the first conduits of the first seat have first long axes that are non-collinear with a long axis of the first channel. Other embodiments are described herein.

Abstract: An embodiment includes a choke system comprising: a choke body; a gate having first and second sidewalls opposing one another; a first seat including a first channel and first conduits; a second seat coupling the second sidewall to the choke body and including a second channel; a third seat coupling the first sidewall to the choke body; a plug coupled to a bottom surface of the gate; a choke stem coupled to a top surface of the gate; wherein (a) the choke system is to convey fluid through the first channel and first conduits when the gate is open and fluid is pressurized in the second channel, and (b) the first conduits of the first seat have first long axes that are non-collinear with a long axis of the first channel. Other embodiments are described herein.

Abstract: An environment-activated automatic shut-off switch is disclosed. The disclosed embodiments allow power to be removed from a trailer auxiliary power circuit when the environment-activated automatic shut-off switch senses that the trailer is being put into motion. The disclosed embodiments of the environment-activated automatic shut-off switch do not require external control signals, such as those received from a vehicle tractor, in order to effectively control the trailer auxiliary power circuit and to ensure that the trailer ABS circuit has dedicated power while the trailer is in motion.

Abstract: An environment-activated automatic shut-off switch is disclosed. The disclosed embodiments allow power to be removed from a trailer auxiliary power circuit when the environment-activated automatic shut-off switch senses that the trailer is being put into motion. The disclosed embodiments of the environment-activated automatic shut-off switch do not require external control signals, such as those received from a vehicle tractor, in order to effectively control the trailer auxiliary power circuit and to ensure that the trailer ABS circuit has dedicated power while the trailer is in motion.