303.02.0015 Iveco Compatible Multi-circuit Protection Valve
303.02.0015
Summary
This multi-circuit protection valve is designed for heavy commercial vehicle braking systems. It features specific port configurations including M16x1.5 and M22x1.5, with opening pressures of 7.5 BAR and 8 BAR respectively to ensure reliable pneumatic circuit separation and safety in heavy-duty applications. Equivalent to OE Iveco 42535024 and Knorr-Bremse AE4502.
| EAN Code | 8699031080703 |
|---|
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Compatible OEM Codes
-
KNORR-BREMSE
- K048307N50
- K011931
- II37679
- AE 4502
-
IVECO
- 42553848
- 42535024
Description
What does a multi-circuit protection valve do?
This multi-circuit protection valve plays a critical role in the pneumatic braking system of heavy commercial vehicles. It is engineered to isolate brake circuits, ensuring that a leak in one circuit does not compromise the braking performance of the entire system. Constructed from high-strength components, it maintains consistent pressure regulation under demanding operational conditions.Compatible vehicles and systems
This component is compatible with Iveco vehicles and is also designed to function within Knorr-Bremse systems. It provides precise control through multiple ports, specifically featuring M16x1.5 threads on ports 21, 22, 23, and 24, while port 26 utilizes an M22x1.5 connection to manage higher pressure requirements effectively.Technical specifications and installation
For optimal performance, technicians should verify the opening pressures during installation. This unit operates with an opening pressure of 7.5 BAR for ports 21/22 and 8 BAR for ports 23/24, with closing pressures maintained at 6.5 BAR across the circuits. Regular inspection of the port seals is recommended to prevent pressure drops.Maintenance and troubleshooting
When replacing this valve, ensure the pneumatic lines are depressurized and all connections are torqued to specification to prevent leaks in the braking circuit.OE cross-reference
303.02.0015 (Multi-circuit Protection Valve) is the equivalent of the Iveco and Knorr-Bremse OE numbers. This part directly replaces Iveco OE numbers 42535024, 42553848. It also replaces Knorr-Bremse OE numbers AE4502, II37679, K011931, K048307N50.Technical Specifications
| Port 21 | M16x1,5 |
|---|---|
| Port 22 | M16x1,5 |
| Port 23 | M16x1,5 |
| Port 24 | M16x1,5 |
| Port 26 | M22x1,5 |
| Opening Pressure 21/22 | 7,5 BAR |
| Opening Pressure 23/24 | 8 BAR |
| Closing Pressure 21/22 | 6,5 BAR |
| Closing Pressure 23/24 | 6,5 BAR |
Other OEMs
IVECO
- 42553848
- 42535024
KNORR-BREMSE
- AE4502
- K048307N50
- K011931
- II37679
- AE 4502
Related Products
Repair Kits
Used In
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| IVECO | |||
| KNORR-BREMSE |
FAQ
What is the function of this multi-circuit protection valve?
It isolates different air brake circuits to ensure that if one circuit loses pressure due to a leak, the other circuits remain functional, maintaining braking safety.
Which vehicle brands is this part compatible with?
This component is designed for use in Iveco trucks and is compatible with Knorr-Bremse systems.
What are the port thread sizes for this valve?
The valve features M16x1.5 threads on ports 21, 22, 23, and 24, and an M22x1.5 thread on port 26.
How do the opening pressures differ between ports?
Ports 21/22 have an opening pressure of 7.5 BAR, while ports 23/24 operate at an opening pressure of 8 BAR.
What are the OE reference numbers of this part?
303.02.0015 directly replaces Iveco OE numbers 42535024, 42553848. It also replaces Knorr-Bremse OE numbers AE4502, II37679, K011931, K048307N50.