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303.02.0107 4-circuit protection valve, Brake System

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303.02.0107 Compatible 4-Circuit Protection Valve

303.02.0107

Summary

This 4-circuit protection valve is engineered for heavy commercial vehicle brake systems. It features M22x1,5 and M16x1,5 port configurations and precise opening pressures ranging from 7.2 BAR to 7.7 BAR to ensure reliable pneumatic control in DAF vehicles. Equivalent to OE DAF ACHA001 and WABCO 9347140110.

Product identifiers
EAN Code8683457009783
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Compatible OEM Codes

  • WABCO
    • 934 714 011 0
  • DAF
    • ACHA001

Description

What does a protection valve do?

This protection valve serves as a critical component within the pneumatic brake system of heavy commercial vehicles. It manages air pressure distribution across multiple circuits to ensure that a leak in one area does not compromise the entire braking capability. Built with high-strength components, it provides the necessary stability for demanding transport operations.

Vehicle and system compatibility

This component is designed for compatibility with DAF vehicles and is also compatible with WABCO systems. It ensures precise pressure regulation across all four circuits, maintaining system integrity during heavy-duty braking cycles.

Installation and maintenance guidance

For proper installation, technicians should verify the port connections: Port 1 uses an M22x1,5 thread, while Ports 21 through 24 utilize M16x1,5 threads. It is essential to check the opening pressures (ranging from 7.2 to 7.7 BAR) and closing pressures (ranging from 4.8 to 5.5 BAR) to ensure they align with the specific vehicle requirements.

Troubleshooting and selection

Regular inspection of the valve ports and pressure thresholds can prevent pneumatic failures in the brake system. Consult your authorized distributor for specific fitment verification.

OE cross-reference

303.02.0107 (4-circuit protection valve) is the equivalent of the DAF and WABCO OE numbers. This part directly replaces DAF OE number ACHA001. It also replaces WABCO OE number 9347140110.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Opening Pressure 217,2 BAR
Opening Pressure 227,2 BAR
Opening Pressure 237,7 BAR
Opening Pressure 247,3 BAR
Closing Pressure 214,8 BAR
Closing Pressure 224,8 BAR
Closing Pressure 234,8 BAR
Closing Pressure 245,5 BAR

Other OEMs

DAF

  • ACHA001

WABCO

  • 9347140110
  • 934 714 011 0

Related Products

Repair Kits

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
DAF
WABCO

FAQ

What is the primary function of this protection valve?
The valve manages air pressure across four distinct circuits within the braking system to prevent a single leak from causing a total loss of braking power.
Which vehicle brands is this part compatible with?
This component is designed for use in DAF vehicles and is also compatible with WABCO systems.
What are the technical port specifications?
The unit features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24).
How can I identify if the valve needs replacement?
Technicians should monitor for pressure drops or failure to reach opening pressures (between 7.2 and 7.7 BAR) during system testing.
What are the OE reference numbers of this part?
303.02.0107 directly replaces DAF OE number ACHA001. It also replaces WABCO OE number 9347140110.