A. Two; pressure chamber and application chamber.
[Illustration: Fig. 8. Release, Automatic or Independent.
Connections: MR, Main Reservoir Pipe; IV, Distributing
Valve Release Pipe; II, Application Cylinder Pipe; CYLS,
Brake Cylinder Pipe; BP, Brake Pipe.]
125. Q. Name the different pipe connections to the distributing valve
reservoir.
A. Referring to Fig. 8, the connection marked "MR" is the main reservoir
supply pipe; "II", application cylinder pipe; "IV", distributing valve
release pipe; "BP", brake pipe; "CYLS", brake cylinder pipe.