303.09.0003 DAF Compatible Load Unloading Valve
303.09.0003
Summary
This heavy-duty load unloading valve is designed for air brake systems and compressor circuits. It features M22x1.5 port connections and a 180° lever position, ensuring reliable pressure regulation and system protection in heavy commercial vehicles like DAF. Equivalent to OE DAF 1325330 and WABCO 4756040120.
| EAN Code | 8683457010062 |
|---|
Ready to Order
Compatible OEM Codes
-
WABCO
- 475 604 012 0
-
DAF
- 1325330
Description
This load unloading valve plays a critical role in maintaining the pneumatic balance of a heavy commercial vehicle's air system. By regulating pressure within the compressor circuit and air brake system, it protects vital components from sudden pressure spikes and ensures consistent performance under varying loads.
This component is specifically designed to be compatible with DAF vehicles and WABCO systems. It features M22x1.5 threaded ports and an adjustment range of 0.8 - 2.2 BAR for empty pressure and 2.8 - 3.7 BAR for half pressure, providing precise control for the vehicle's pneumatic stability.
For optimal performance, technicians should inspect the 180° lever position and all threaded connections during routine maintenance to prevent air leakage. Ensuring correct installation of these high-strength components helps maintain the integrity of the entire braking and suspension circuit.
Consult your authorized distributor to verify fitment for your specific truck model.
This component is specifically designed to be compatible with DAF vehicles and WABCO systems. It features M22x1.5 threaded ports and an adjustment range of 0.8 - 2.2 BAR for empty pressure and 2.8 - 3.7 BAR for half pressure, providing precise control for the vehicle's pneumatic stability.
For optimal performance, technicians should inspect the 180° lever position and all threaded connections during routine maintenance to prevent air leakage. Ensuring correct installation of these high-strength components helps maintain the integrity of the entire braking and suspension circuit.
Consult your authorized distributor to verify fitment for your specific truck model.
OE cross-reference
303.09.0003 (Load Unloading Valve) is the equivalent of the DAF and WABCO OE numbers. This part directly replaces DAF OE number 1325330. It also replaces WABCO OE number 4756040120.Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 2 | M22x1,5 |
| Adjustment Range Empty Pressure | 0,8 - 2,2 BAR |
| Adjustment Range Half Pressure | 2,8 - 3,7 BAR |
| Lever Position | 180° |
Other OEMs
DAF
- 1325330
WABCO
- 4756040120
- 475 604 012 0
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| DAF | |||
| WABCO |
FAQ
What is the function of this load unloading valve?
It acts as a pressure relief component that manages excess air within the compressor circuit, protecting the air brake system from pressure fluctuations.
What are the technical port specifications?
The unit is equipped with M22x1.5 ports and features a 180° lever position to ensure proper mechanical orientation during installation.
Which vehicle brands is this part compatible with?
This component is compatible with DAF vehicles and is designed to function within WABCO systems found in heavy commercial vehicles.
How do I know if my load unloading valve needs replacement?
Technicians should look for signs of air leakage or inconsistent pressure regulation in the braking or suspension circuits as indicators for replacement.
What are the OE reference numbers of this part?
303.09.0003 directly replaces DAF OE number 1325330. It also replaces WABCO OE number 4756040120.