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303.02.0104 WABCO 4-circuit protection valve

303.02.0104

Summary

The 303.02.0104 4-circuit protection valve is a high-strength component designed for heavy commercial vehicle brake systems. Featuring M22x1,5 Voss ports, it ensures precise pressure regulation and durability in demanding environments. Compatible with MAN and NEOPLAN systems.

EAN Code8683457009752
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Description

The 303.02.0104 4-circuit protection valve serves as a critical component within the pneumatic brake system of heavy commercial vehicles. Its primary function is to regulate and protect multiple air circuits, ensuring that pressure fluctuations in one circuit do not negatively impact the stability of others. Engineered with high-strength components, this valve provides reliable air distribution and maintains system integrity during intense driving conditions.

This product is the OE-equivalent of the WABCO 934 714 400 0 4-circuit protection valve used in MAN and NEOPLAN heavy vehicles. It is specifically designed to meet the technical requirements of these vehicle makes, ensuring seamless integration with existing pneumatic architectures. The unit features several M22x1,5 Voss ports to facilitate precise connection and stable airflow management.

For workshop technicians, this component offers straightforward installation due to its standardized port sizes and robust construction. The technical specifications include an opening pressure of 6,9 BAR for ports 21, 22, and 24, and a closing pressure of 5 BAR across multiple circuits to ensure rapid response and safety. Regular inspection of the pneumatic connections and port integrity is recommended during standard maintenance cycles to ensure optimal braking performance.

Technical Specifications

Port 1M22x1,5 Voss
Opening Pressure 216,9 BAR
Opening Pressure 226,9 BAR
Closing Pressure 215 BAR
Closing Pressure 225 BAR
Closing Pressure 235 BAR
Closing Pressure 245 BAR
Opening Pressure 237 BAR
Opening Pressure 246,9 BAR
Port 21M22x1,5 Voss
Port 22M22x1,5 Voss
Port 23M22x1,5 Voss
Port 24M22x1,5 Voss

Other OEMs

MAN

  • 81.52151-6098
  • 81521516098

NEOPLAN

  • 8151516095

WABCO

  • 934 714 400 0
  • 9347144000

Related Products

Vehicles Used

BrandModelEngine
MAN
NEOPLAN
WABCO

FAQ

What are the compatible OEM numbers for this protection valve?
This unit is compatible with WABCO 934 714 400 0, MAN 81.52151-6098, and NEOPLAN 8151516095.
What is the port specification for this component?
The device features M22x1,5 Voss ports (Port 1, Port 21, Port 22, Port 23, and Port 24) for secure pneumatic connections.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for the pneumatic brake systems of heavy commercial vehicles such as trucks and buses.
What are the pressure settings for the circuits?
The opening pressure for ports 21, 22, and 24 is set at 6,9 BAR, while the closing pressure for ports 21 through 24 is 5 BAR.
Which vehicle brands can use this part?
It is engineered for compatibility with MAN and NEOPLAN systems as well as WABCO hardware.