Shacman F3000 F2000 H3000 RHD FAST Gearbox Double H Air Valve F99660

Double H valves are mainly used to achieve high and low gear switching and basic gear switch with sub-boxes, and single H valves are used to switch without sub-box.

Single H Valve, in fact, the single-way air valve, airflow passes through the transition of 1.2.3.4 gear. The double H valve is a dual air valve, which is 1.2.3.4 transitions all the way, and the high-speed 5.6.7-speed conversion is achieved through the second box.

The main box and the split box are separated, the shift operation of the main box and the shift movement of the sub-box need to be simultaneously, and the combination is the high-speed file. This requires dual air valve implementation. Do not control the h-valve, that is, the air path has always been pass, and the shift fork will always be in one of the gear.