The head (1) has a metal housing with a half-coupling (5) together with a retaining clip, and an axle (3) projecting inwardly to a cylinder from a circular opening. The axle exhibits an actuation lever (4) at an external end. A groove disk is arranged at a...

A release graduating valve for freight brake control is provided for a railcar having a pneumatic control valve, emergency and auxiliary reservoirs each normally charged with pressurized fluid from a brake pipe and a fluid pressure activated brake cylinder...