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934 705 002 0 Multi-circuit Protection Valve for WABCO Systems

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934 705 002 0 WABCO Compatible Multi-circuit Protection Valve

303.02.0002

Summary

This multi-circuit protection valve is designed for heavy commercial vehicle brake systems. It features high-strength components with M22x1,5 and M12x1,5 ports, providing precise pressure regulation. Compatible with WABCO systems to ensure reliable braking performance. Equivalent to OE WABCO 9347050020.

Product identifiers
EAN Code8699031075839
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Compatible OEM Codes

  • WABCO
    • 934 705 002 0
  • MERCEDES BENZ
    • 003 431 55 06
  • FAUN
    • 99707005559

Description

What does a protection valve do?

This multi-circuit protection valve serves as a critical component within the pneumatic brake system, ensuring the separation of braking circuits to maintain safety in the event of a leak. Built with heavy-duty grade materials, it manages air distribution across multiple channels to prevent total system failure.

Compatibility and technical specifications

The unit is engineered to be compatible with WABCO systems and other heavy commercial vehicle applications. It features specific pressure regulation capabilities, including a 7.5 BAR opening pressure for ports 23/24 and a 4.5 BAR closing pressure for the same ports, ensuring precise pneumatic control.

Installation and maintenance

Technicians should verify port configurations during installation, as this valve utilizes M22x1,5 and M12x1,5 thread sizes. Regular inspection of the port connections and pressure settings is recommended to ensure optimal braking response in heavy commercial vehicles.

System reliability

When replacing this component, ensure the new valve meets the specific pressure requirements of the vehicle's pneumatic circuit to maintain system integrity.

OE cross-reference

303.02.0002 (Multi-circuit Protection Valve) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 9347050020.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 21M22x1,5
Port 22M22x1,5
Port 23M22x1,5
Port 24M22x1,5
Port 25M22x1,5
Port 26M22x1,5
Port 27M12x1,5
Port 28M12x1,5
Opening Pressure 23/247,5 BAR
Closing Pressure 21/227 BAR
Closing Pressure 23/244,5 BAR
Port 21/229 BAR
Opening Pressure 21/229 BAR

Other OEMs

FAUN

  • 99707005559

MERCEDES BENZ

  • A0034315506
  • 0034315506
  • 003.431.5506
  • 003.431.55.06
  • 003 431 5506
  • 003 431 55 06

WABCO

  • 9347050020
  • 934.705.002.0
  • 934 705 002 0

Related Products

Repair Kits

Used In

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
FAUN
MERCEDES BENZ
WABCO

FAQ

What is the function of a multi-circuit protection valve?
It protects the braking system by isolating different air circuits, ensuring that a leak in one circuit does not deplete the air pressure required for the others.
What are the thread sizes for this valve?
This component features M22x1,5 ports for main connections and M12x1,5 ports for specific outlets.
What are the typical pressure settings?
The valve operates with specific thresholds, such as a 7.5 BAR opening pressure for ports 23/24 and 9 BAR for ports 21/22.
Is this part compatible with WABCO systems?
Yes, this multi-circuit protection valve is designed to be compatible with WABCO systems in heavy commercial vehicles.
What are the OE reference numbers of this part?
303.02.0002 directly replaces WABCO OE number 9347050020.