303.02.0015 Multi-circuit Protection Valve
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303.02.0015 IVECO 42553848 Compatible Multi-circuit Protection Valve

303.02.0015

Summary

●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 22/24: 8 BAR ●Closing Pressure 21/22: 6,5 BAR ●Closing Pressure 22/24: 6,5 BAR

EAN Code8699031080703
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Description

The heavy-duty multi-circuit protection valve is a critical component designed to ensure pneumatic stability and safety within the brake system of heavy commercial vehicles. This part manages pressure distribution across multiple circuits to prevent total system failure in the event of a leak or rupture. Engineered with high-strength components, it maintains precise pressure regulation under demanding driving conditions.

303.02.0015 is the OE-equivalent of the IVECO 42553848 and KNORR-BREMSE AE 4502 multi-circuit protection valve used in heavy commercial vehicle braking systems. This component is fully compatible with IVECO (42535024, 42553848) and KNORR-BREMSE (AE 4502, II37679, K011931, K048307N50) hardware systems.

For workshop technicians performing maintenance, this valve features specific port configurations including M16x1,5 for ports 21, 22, 23, and 24, and a M22x1,5 port for port 26. Proper installation ensures the correct opening pressures of 7,5 BAR and 8 BAR are maintained according to technical specifications. Regular inspections of the pneumatic lines and connection points are recommended to ensure optimal braking performance and system reliability.

Technical Specifications

Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Port 26M22x1,5
Opening Pressure 21/227,5 BAR
Opening Pressure 22/248 BAR
Closing Pressure 21/226,5 BAR
Closing Pressure 22/246,5 BAR

Other OEMs

IVECO

  • 42535024
  • 42553848

KNORR-BREMSE

  • AE 4502
  • II37679
  • K011931
  • K048307N50
  • AE4502

Related Products

Repair Kits

Products Used in

Vehicles Used

BrandModelEngine
IVECO
KNORR-BREMSE

FAQ

What are the compatible OEM numbers for this protection valve?
This part is compatible with IVECO 42535024, IVECO 42553848, KNORR-BREMSE AE 4502, KNORR-BREMSE II37679, KNORR-BREMSE K011931, and KNORR-BREMSE K048307N50.
What are the port specifications for this unit?
The unit features four M16x1,5 ports (Ports 21, 22, 23, 24) and one M22x1,5 port (Port 26) for precise assembly.
What are the opening pressure settings?
The opening pressure for ports 21/22 is 7,5 BAR, while the opening pressure for ports 22/24 is set at 8 BAR.
Can this part be used in light commercial vehicles?
No, this is a heavy-duty component specifically designed for heavy commercial vehicle brake systems like trucks and buses.
What is the closing pressure for the circuits?
The closing pressure for both the 21/22 and 23/24 circuits is specified at 6,5 BAR to ensure system safety.