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303.02.0098 4-circuit protection valve

303.02.0098

Summary

The Vaden Original 303.02.0098 is a high-strength 4-circuit protection valve designed for heavy commercial vehicle brake systems. It features Port 1 (M22x1,5) and four M16x1,5 ports (21, 22, 23, 24) with consistent opening and closing pressure specifications for reliable pneumatic control.

Product identifiers
EAN Code8683457009561
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Compatible OEM Codes

  • KNORR-BREMSE
    • AE 4459

Description

The 4-circuit protection valve plays a critical role in maintaining pneumatic stability within the brake system of heavy commercial vehicles. This component ensures that air pressure is distributed across multiple circuits, providing essential redundancy and safety during operation. Designed for high-performance environments, it utilizes high-strength components to ensure durability under constant pressure cycles.

The 303.02.0098 is the OE equivalent of the KNORR-BREMSE AE4459 used in heavy-duty pneumatic systems. This part features a specific configuration with Port 1 at M22x1,5 and Ports 21 through 24 at M16x1,5, with an opening pressure of 6,5 BAR and a closing pressure of 4,5 BAR across all circuits. It is engineered to meet the rigorous standards required for reliable air brake management.

Maintenance technicians should regularly inspect the connection points and ensure that the port threads are free from debris to maintain optimal sealing. Given its role in the braking system, verifying the pressure thresholds during routine service is essential for fleet safety and system longevity.

The Vaden Original product is designed to provide precise control within the pneumatic circuit, ensuring that the vehicle's braking performance remains consistent even under varying load conditions.

Technical Specifications

Technical Specifications
Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Opening Pressure 216,5 BAR
Opening Pressure 226,5 BAR
Opening Pressure 236,5 BAR
Opening Pressure 246,5 BAR
Closing Pressure 214,5 BAR
Closing Pressure 224,5 BAR
Closing Pressure 234,5 BAR
Closing Pressure 244,5 BAR

Other OEMs

KNORR-BREMSE

  • AE4459
  • AE 4459

Vehicles Used

Vehicles Used
BrandModelModel TypeEngine
KNORR-BREMSE

FAQ

What is the primary function of this 4-circuit protection valve?
It manages air distribution across four separate circuits in a pneumatic brake system to ensure safety and redundancy.
Which OEM reference is this part compatible with?
This product is an OE equivalent for the KNORR-BREMSE AE4459.
What are the port specifications for this valve?
It features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24).
What are the typical opening and closing pressures?
The valve operates with an opening pressure of 6,5 BAR and a closing pressure of 4,5 BAR for all four circuits.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for heavy commercial vehicle brake systems and pneumatic applications.