Air dryer with pressure regulator;
four-circuit safety valve;
receivers;
mufflers of the receivers, to decrease air exhaust noise level;
trailer air dispenser;
service and parking brake valves;
check valve in parking brake system line;
acceleration valves (one in service brake system, the other in parking brake system”;
two sets of coupling heads (for the truck and the railer);
double-line valve;
trailer control valve;
卡车刹车力量监管机构;
brake chambers (front, back, trailer);
a pair of flexible connectors to connect the tailer to the truck;
pressure gauges to measure the pressure in brake system lines.
Connecting fittings and air nozzles have the ability of quick connection.

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