4646799 CDRYER for Hitachi ZX220W-7/4HK1T
product details
Description
| Part Name | CDRYER |
| Part Number | 4646799 |
| Brand Name | HITACHI |
| Place of Origin | Japan |
| Delivery Time | 1-3 work days |
| Packaging Type | Cartons |
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In the brake systems, pneumatic directional valves, and clutch booster units of Hitachi excavators and mining trucks, compressed air serves as the 'neurotransmitter' that transmits control commands. However, the high-temperature, high-pressure gas discharged from the air compressor carries a large amount of water vapor, oil mist, and impurities. When this 'moist' compressed air enters the pipelines, the water vapor condenses into liquid water as the temperature drops—corroding precision pneumatic valve cores, freezing brake lines and causing malfunctions, washing away lubricants and leading to wear on moving parts, and contaminating pneumatic components, causing them to stick. These invisible droplets silently flow through the air system, eroding the reliability and safety of equipment day after day. It is only when the brake response becomes sluggish, gear-shifting actions stick, or pneumatic valves leak continuously that you realize—the moisture in the compressed air has long become a 'chronic poison' to the pneumatic system. | ![]() |
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Dry Air for Reliable Braking and Control |
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The Ownership Of The Products Belongs To Guangzhou Qicheng Machinery Equipment Co., Ltd.






