303.02.0106 4-circuit protection valve — WABCO
303.02.0106
This heavy-duty 4-circuit protection valve features M22x1,5 Voss ports and precise pressure regulation. Designed for reliability in heavy commercial vehicle brake systems, it is compatible with WABCO, JAC, KING LONG, and SUNWIN systems.
| EAN Code | 8683457009776 |
|---|
Description
The 4-circuit protection valve serves a critical function within the pneumatic brake system of heavy commercial vehicles, ensuring stable air pressure distribution across multiple circuits. This component is engineered to maintain precise opening and closing pressures to prevent system failures during operation.
303.02.0106 is the OE-equivalent of the WABCO 934 714 403 0 4-circuit protection valve used in FOTON, JAC, KING LONG, and SUNWIN vehicles. This part meets stringent technical requirements for heavy-duty performance and is a direct replacement for specific OEM configurations.
Workshop technicians should verify the port connections and pressure settings during installation. The unit features four M22x1,5 Voss ports with specific opening pressures (e.g., 6,9 BAR for Port 21/22 and 7 BAR for Port 23) to ensure optimal circuit-specific responsiveness and safety in complex braking architectures.
Technical Specifications
| Port 1 | M22x1,5 Voss |
|---|---|
| Opening Pressure 21 | 6,9 BAR |
| Opening Pressure 22 | 6,9 BAR |
| Closing Pressure 21 | 6,4 BAR |
| Closing Pressure 22 | 6,4 BAR |
| Closing Pressure 23 | 6,4 BAR |
| Closing Pressure 24 | 6,4 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 6,9 BAR |
| Port 21 | M22x1,5 Voss |
| Port 22 | M22x1,5 Voss |
| Port 23 | M22x1,5 Voss |
| Port 24 | M22x1,5 Voss |
Other OEMs
JAC
- 59480-Y43G6
KING LONG
- 235500350
WABCO
- 934 714 403 0
- 9347144030
Related Products
Repair Kits
Vehicles Used
| Brand | Model | Engine |
|---|---|---|
| FOTON | ||
| JAC | ||
| KING LONG | ||
| SUNWIN | ||
| WABCO |