303.02.0100 4-Circuit Protection Valve for DAF and Iveco
303.02.0100
Summary
This 4-circuit protection valve is designed for heavy commercial vehicle pneumatic brake systems. It features M22x1.5 and M16x1.5 port sizes, with opening pressures of 6.5 BAR and closing pressures of 5.5 BAR. Compatible with DAF, Iveco, and Steyr vehicles. Equivalent to OE DAF 1518191, Iveco 98480157 and Steyr 533531210010.
| EAN Code | 8683457009585 |
|---|
Ready to Order
Compatible OEM Codes
-
IVECO
- 99480157
- 9934714119
- 98480157
-
WABCO
- 934 714 119 0
-
STEYR
- 533531210010
-
DAF
- 1518191
Description
What does a 4-circuit protection valve do?
This 4-circuit protection valve serves as a critical component within the pneumatic brake system of heavy commercial vehicles. It functions by distributing supply pressure to four independent circuits while ensuring that any pressure loss in one circuit does not compromise the others through advanced isolation mechanisms. Built with high-strength components, it maintains system integrity under demanding operating conditions.Vehicle and system compatibility
The unit is designed for compatibility with DAF, Iveco, and Steyr vehicles. It is also fitted to Steyr trucks. This valve works seamlessly within WABCO systems to ensure reliable air distribution across the braking architecture.Installation and maintenance guidance
For proper installation, technicians should verify that all connection ports—specifically the M22x1.5 inlet and M16x1.5 outlets—are free from debris. Given the specific opening pressure of 6.5 BAR and closing pressure of 5.5 BAR, ensuring correct mounting on the chassis is essential for stable pressure regulation during braking cycles.System reliability
Regular inspection of the pneumatic lines connected to this valve can help prevent air leaks and ensure the isolation function remains active during emergency braking scenarios.OE cross-reference
303.02.0100 (4-circuit protection valve) is the equivalent of the DAF, Iveco, Steyr and WABCO OE numbers. This part directly replaces DAF OE number 1518191. It also replaces Iveco OE numbers 98480157, 9934714119, 99480157, Steyr OE number 533531210010 and WABCO OE number 9347141190.Technical Specifications
| Port 1 | M22x1,5 |
|---|---|
| Port 21 | M16x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Opening Pressure 21 | 6,5 BAR |
| Opening Pressure 22 | 6,5 BAR |
| Opening Pressure 23 | 6,5 BAR |
| Opening Pressure 24 | 6,5 BAR |
| Closing Pressure 21 | 5,5 BAR |
| Closing Pressure 22 | 5,5 BAR |
| Closing Pressure 23 | 5,5 BAR |
| Closing Pressure 24 | 5,5 BAR |
Other OEMs
DAF
- 1518191
IVECO
- 99480157
- 9934714119
- 98480157
STEYR
- 533531210010
WABCO
- 9347141190
- 934 714 119 0
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| DAF | |||
| IVECO | |||
| STEYR | |||
| WABCO |
FAQ
What is the primary function of this 4-circuit protection valve?
It distributes air supply pressure to four independent circuits and isolates any failing circuit to prevent total pressure loss in the remaining lines.
Which vehicle brands are compatible with this component?
This part is compatible with DAF, Iveco, and Steyr heavy commercial vehicles, as well as WABCO systems.
What are the technical port specifications for this valve?
The valve features a Port 1 size of M22x1.5 and four outlet ports (21-24) measuring M16x1.5 each.
How do the opening and closing pressures function?
The unit operates with an opening pressure of 6.5 BAR and a closing pressure of 5.5 BAR across its circuits to manage air distribution.
What are the OE reference numbers of this part?
303.02.0100 directly replaces DAF OE number 1518191. It also replaces Iveco OE numbers 98480157, 9934714119, 99480157, Steyr OE number 533531210010 and WABCO OE number 9347141190.