Shandong Shengyue Technology Development Co.,Ltd is one of the most professional wabco four-circuit protection valve 9347141610 for howo a7 t7h th7 trucks manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
WABCO Four-Circuit Protection Valve 9347141610 for HOWO A7 T7H TH7 TRUCKS
FUNCTION
1. Air Distribution: Safely diverts and conveys compressed air discharged from the air compressor to the truck's four independent pneumatic systems (front brakes, rear brakes, parking/trailer brakes, and auxiliary circuits such as clutch assist or air suspension).
2. Fault Isolation: Should one of the truck's air lines unfortunately burst, disconnect, or develop a severe leak, the valve's internal check valve and spring mechanism will automatically seal off the affected outlet once the pressure drops to 6.0 bar. This action locks in and preserves the air pressure within the remaining three intact circuits, thereby preventing a single-point leak from causing a complete failure of the vehicle's entire braking system.
3. Priority Pressurization: Ensures that the front and rear service brake circuits-which demand the highest safety margins-are prioritized for pressurization; air is supplied to the parking brake and auxiliary circuits only after the service brake circuits have reached 6.5 bar. This guarantees that the service brakes remain fully effective and operational when the truck begins to move.
DETAILS
| DESCRIPTION | Four-Circuit Protection Valve | PART NUMBER | 9347141610 |
| WEIGHT | 1kg | VOLUME | 109 × 90 × 88 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Key Maintenance Intervals
1. Every 5,000 km: The drain valve located beneath the truck's air reservoir must be actuated. If a significant amount of accumulated water or white emulsified oil is discharged, it indicates that the upstream air dryer cartridge has failed; the cartridge must be replaced immediately. Failure to do so will allow oil and water to enter the four-circuit protection valve, leading to rapid corrosion and seizing of the internal valve components.
2. Every 100,000 km: Verify that the actual cut-off pressure in each circuit meets standard specifications, and inspect the exterior of the valve body for any signs of air leakage (indicated by bubbling).
3. Every 2 years / 200,000–300,000 km: It is recommended to use a repair kit to replace all internal rubber seals and springs, or to replace the entire four-circuit protection valve assembly.
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