303.02.0097 4-circuit protection valve
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303.02.0097 4-circuit protection valve - KNORR-BREMSE

303.02.0097

Summary

●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Opening Pressure 21: 6,9 BAR ●Opening Pressure 22: 6,9 BAR ●Opening Pressure 23: 7 BAR ●Opening Pressure 24: 6,9 BAR ●Closing Pressure 21: 4,5 BAR ●Closing Pressure 22: 4,5 BAR ●Closing Pressure 23: 4,5 BAR ●Closing Pressure 24: 4,5 BAR

EAN Code8683457009554
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Description

The heavy duty 4-circuit protection valve is a critical component within the pneumatic brake system of heavy commercial vehicles, ensuring pressure distribution and circuit safety. Designed with high-strength components, this part manages air pressure across multiple circuits to maintain system integrity during operation.

303.02.0097 is the OE-equivalent of the KNORR-BREMSE AE 4447 4-circuit protection valve used in heavy commercial vehicle braking systems. This component is engineered to meet precise technical standards for reliable performance in demanding environments.

For workshop technicians, this valve features specific port configurations including Port 1 (M22x1,5) and four outlet ports (M16x1,5). It operates with specific opening pressures of 6,9 to 7 BAR and closing pressures of 4,5 BAR to ensure optimal pneumatic control. Proper installation and routine checks of the connection points are essential for maintaining system safety.

This product is designed for use in professional workshop environments and heavy vehicle service stations where precision and durability are required for brake system maintenance.

Technical Specifications

Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Opening Pressure 216,9 BAR
Opening Pressure 226,9 BAR
Opening Pressure 237 BAR
Opening Pressure 246,9 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

  • AE 4447
  • AE4447

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

What are the opening pressure values for this valve?
The opening pressures are 6,9 BAR for ports 21, 22, and 24, and 7 BAR for port 23.
Which OEM number is this part compatible with?
This product is an OE-equivalent for the KNORR-BREMSE AE 4447 model.
What are the thread sizes for the ports?
The main port (Port 1) is M22x1,5 and the four output ports (Port 21 to 24) are M16x1,5.
Is this part suitable for heavy commercial vehicles?
Yes, it is a specialized component designed specifically for heavy commercial vehicle brake systems.
What is the closing pressure for the circuits?
The closing pressure for all four ports (21, 22, 23, and 24) is set at 4,5 BAR.