Howo Truck Gearbox Parts- AZ2230325003 Double H Valve

Description

AZ2230325003 double H valve is a key pneumatic control component of Sinotruk heavy truck gearbox. It is installed on the gearbox, serving to control air circuit switching for the auxiliary box high and low range gear shifting. When the driver toggles the high-low gear switch on the shift handle, the double H valve changes the air path direction, controls the inflation and exhaust of the shift cylinder, and completes the conversion between high-speed gear and low-speed gear of the gearbox auxiliary box. The valve body adopts high-strength engineering plastic or cast aluminum material with precision internal spool and sealing rings. It features good air tightness and anti-blocking performance, adapting to the harsh working environment with dust, vibration and temperature fluctuation under the truck chassis. Each double H valve undergoes air tightness test, switching cycle test and aging test before delivery to prevent common faults such as air leakage, jamming and failure to shift. It is supplied as a complete assembly for direct replacement, which can effectively solve the problem of difficult or failed high-low gear conversion. We maintain sufficient inventory and stable bulk supply for repair workshops, fleet operators, auto spare parts dealers and global cross-border export customers.