A trip cock valve for a brake system on a rail car includes a valve body that defines an inlet, a chamber downstream from the inlet, and an outlet downstream from the chamber. A piston is inside the chamber. A valve member operably connected to the piston has a first position that prevents fluid flow through the outlet and a second position that permits fluid flow through the outlet. A lever is operably engaged with the valve member to move the valve member from the first position to the second position. A valve position indicator downstream from the inlet is in fluid communication with the inlet when the valve member is in the second position.

One or more techniques and/or systems are disclosed that can provide for a portable monitor control. A movement detection triggering system can be disposed between a fluid inlet and the body of the portable monitor, and may be able to restrict or reduce fluid flow when the monitor is moved from its desired position. A trigger arm can be coupled with the inlet, and, when the inlet is pivoted away from a set position, the trigger arm is also moved, which triggers another portion of the control system. A trigger pin is released, which may allow a lever to rotate, allowing a restrictor component to move into place in the fluid flow path, thereby restricting fluid flow.

A trip cock valve for a brake system on a rail car includes a valve body that defines an inlet, a chamber downstream from the inlet, and an outlet downstream from the chamber. A piston is inside the chamber. A valve member operably connected to the piston has a first position that prevents fluid flow through the outlet and a second position that permits fluid flow through the outlet. A lever is operably engaged with the valve member to move the valve member from the first position to the second position. A valve position indicator downstream from the inlet is in fluid communication with the inlet when the valve member is in the second position.

One or more techniques and/or systems are disclosed that can provide for a portable monitor control. A movement detection triggering system can be disposed between a fluid inlet and the body of the portable monitor, and may be able to restrict or reduce fluid flow when the monitor is moved from its desired position. A trigger arm can be coupled with the inlet, and, when the inlet is pivoted away from a set position, the trigger arm is also moved, which triggers another portion of the control system. A trigger pin is released, which may allow a lever to rotate, allowing a restrictor component to move into place in the fluid flow path, thereby restricting fluid flow.