Abstract: An empty-load system including a first housing having brake cylinder, control valve, equalization volume reservoir and pilot ports. The first housing also has a ratio means for controlling the connection between ports and has a piston responsive to a pilot pressure to operate the ratio means. The system also includes a second housing having a brake cylinder port and a pilot port connected, respectively, to the brake cylinder port and the pilot port of the first housing. The second housing also has a sensor means, having a sensor piston, for sensing the load of a railcar and has a sensor valve for connecting the brake cylinder port to the pilot port for a first position of the sensor piston.