303.02.0013 4-Circuit Protection Valve Compatible
303.02.0013
Summary
This 4-circuit protection valve is essential for pneumatic brake systems in heavy commercial vehicles. It features M22x1.5 and M16x1.5 port sizes, with opening pressures of 7 BAR and closing pressures of 4.5 BAR. Designed for Mercedes-Benz, DAF, and Iveco trucks. Equivalent to OE DAF 670766, Iveco 042085657 and Knorr-Bremse AE4170.
| EAN Code | 8699031096247 |
|---|
Ready to Order
Compatible OEM Codes
-
MERCEDES BENZ
- 002 431 91 06
- 002 431 40 06
- 002 431 01 06
- 001 431 93 06
- 001 431 89 06
- 001 431 87 06
-
IVECO
- 42078368
- 042085658
- 042085657
-
KNORR-BREMSE
- I85510
- AE 4170
-
DAF
- 670766
Description
What does a 4-circuit protection valve do?
This pneumatic component serves as a critical distributor within the air brake system of heavy commercial vehicles. By receiving pressurized air from the compressor, it ensures that air is distributed to multiple independent circuits. This mechanism is vital for maintaining braking performance and safety across the entire pneumatic assembly.Vehicle and system compatibility
This valve is compatible with Mercedes-Benz, DAF, and Iveco trucks. It is specifically designed to work within pneumatic brake systems that require reliable circuit isolation to prevent total pressure loss in the event of a leak. The unit features a robust construction suitable for heavy-duty service environments.Technical installation specifications
Technicians should note the specific port configurations for installation: Port 1 utilizes an M22x1.5 thread, while Ports 21, 22, 23, and 24 utilize M16x1.5 threads. The opening pressure is calibrated at 7 BAR for all secondary ports, with a closing pressure of 4.5 BAR to ensure proper circuit isolation and pressure regulation during operation.Maintenance guidance
When performing maintenance, ensure all connections are secure and the port sizes match the existing vehicle configuration to prevent air leaks. Consult your authorized distributor.OE cross-reference
303.02.0013 (4-circuit protection valve) is the equivalent of the DAF, Iveco, Knorr-Bremse and Mercedes-Benz OE numbers. This part directly replaces DAF OE number 670766. It also replaces Iveco OE numbers 042085657, 042085658, 42078368, Knorr-Bremse OE numbers AE4170, I85510 and Mercedes-Benz OE numbers 0014318706, 0014318906, 0014319306, 0024310106, 0024314006, 0024319106.Technical Specifications
| Port 21 | M16x1,5 |
|---|---|
| Port 1 | M22x1,5 |
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Opening Pressure 21 | 7 BAR |
| Opening Pressure 22 | 7 BAR |
| Opening Pressure 23 | 7 BAR |
| Opening Pressure 24 | 7 BAR |
| Closing Pressure 21 | 4,5 BAR |
| Closing Pressure 22 | 4,5 BAR |
| Closing Pressure 23 | 4,5 BAR |
| Closing Pressure 24 | 4,5 BAR |
Other OEMs
DAF
- 670766
IVECO
- 42078368
- 042085658
- 042085657
KNORR-BREMSE
- AE4170
- I85510
- AE 4170
MERCEDES BENZ
- A0024319106
- A0024314006
- A0024310106
- A002 431 91 06
- A002 431 40 06
- A002 431 01 06
- A0014319306
- A0014318906
- A0014318706
- A001 431 93 06
- A001 431 89 06
- A001 431 87 06
- 0024319106
- 0024314006
- 0024310106
- 002.431.9106
- 002.431.91.06
- 002.431.4006
- 002.431.40.06
- 002.431.0106
- 002.431.01.06
- 002-431-91-06
- 002-431-40-06
- 002-431-01-06
- 002 431 9106
- 002 431 4006
- 002 431 0106
- 0014319306
- 0014318906
- 0014318706
- 001.431.9306
- 001.431.93.06
- 001.431.8906
- 001.431.89.06
- 001.431.8706
- 001.431.87.06
- 001-431-93-06
- 001-431-89-06
- 001-431-87-06
- 001 431 9306
- 001 431 8906
- 001 431 8706
- 002 431 91 06
- 002 431 40 06
- 002 431 01 06
- 001 431 93 06
- 001 431 89 06
- 001 431 87 06
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| DAF | |||
| IVECO | |||
| KNORR-BREMSE | |||
| MERCEDES BENZ |
FAQ
What is the primary function of this protection valve?
It distributes pressurized air from the compressor to four separate circuits while isolating any circuit experiencing a pressure loss to maintain braking safety.
Which vehicle makes are compatible with this part?
This component is designed for use in Mercedes-Benz, DAF, and Iveco heavy commercial vehicles.
What are the technical port specifications?
The valve features one M22x1.5 port (Port 1) and four M16x1.5 ports (Ports 21, 22, 23, and 24).
How are the opening and closing pressures defined?
The device operates with an opening pressure of 7 BAR and a closing pressure of 4.5 BAR across the secondary ports.
What are the OE reference numbers of this part?
303.02.0013 directly replaces DAF OE number 670766. It also replaces Iveco OE numbers 042085657, 042085658, 42078368, Knorr-Bremse OE numbers AE4170, I85510 and Mercedes-Benz OE numbers 0014318706, 0014318906, 0014319306, 0024310106, 0024314006, 0024319106.