303.02.0005 4-circuit protection valve
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303.02.0005 KNORR-BREMSE 4-circuit protection valve

303.02.0005

Summary

●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Operating Pressure: 12 BAR ●Opening Pressure 21: 7 BAR ●Opening Pressure 22: 7 BAR ●Opening Pressure 23: 7 BAR ●Opening Pressure 24: 7,2 BAR ●Closing Pressure 21: 5,5 BAR ●Closing Pressure 22: 5,5 BAR ●Closing Pressure 23: 5,5 BAR ●Closing Pressure 24: 5,5 BAR ●Max Pressure: 20 BAR

EAN Code8699031096216
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Description

The heavy-duty protection valve is a vital component within the pneumatic brake system of heavy commercial vehicles, ensuring the stable distribution of air pressure across different circuits. This high-strength component is engineered to manage pressure fluctuations effectively, providing critical safety for truck and bus applications.

303.02.0005 is the OE-equivalent of the KNORR-BREMSE AE 4612 and II38801F used in MAN systems including N1.01106-6148 and N1.01106.6148 models. This part ensures seamless integration with compatible brake systems from KNORR-BREMSE and MAN architectures.

Designed for workshop technicians, this valve features specific port configurations including one M22x1,5 main port and four M16x1,5 auxiliary ports. It operates at a standard pressure of 12 BAR and is built to withstand a maximum pressure of up to 20 BAR during peak operation cycles.

Maintaining the integrity of the air circuit requires precision components that meet strict industrial standards. This valve provides reliable opening and closing thresholds to ensure that the braking-suspension systems of heavy commercial vehicles function with maximum safety and precision.

Technical Specifications

Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Operating Pressure12 BAR
Opening Pressure 217 BAR
Opening Pressure 227 BAR
Opening Pressure 237 BAR
Opening Pressure 247,2 BAR
Closing Pressure 215,5 BAR
Closing Pressure 225,5 BAR
Closing Pressure 235,5 BAR
Closing Pressure 245,5 BAR
PressureMAX 20 BAR

Other OEMs

KNORR-BREMSE

  • AE 4612
  • II38801F
  • AE4612

MAN

  • N1.01106-6148
  • N1.01106.6148
  • N1-01106-6148
  • N1011066148

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
KNORR-BREMSE
MAN

FAQ

What are the specific port sizes for this protection valve?
The unit features Port 1 with M22x1,5 threads and Ports 21, 22, 23, and 24 with M16x1,5 threads.
Which OEM numbers is this part compatible with?
This part is an equivalent to KNORR-BREMSE AE 4612, KNORR-BREMSE II38801F, MAN N1.01106-6148, and MAN N1.01106.6148.
What is the operating pressure range for this component?
The standard operating pressure is 12 BAR, with a maximum pressure capacity of up to 20 BAR.
Which vehicle manufacturers use this type of valve?
This component is designed for heavy commercial vehicle systems used by manufacturers like MAN and KNORR-BREMSE.
Does this part provide multi-circuit protection?
Yes, it is a specialized 4-circuit protection valve designed to manage air distribution across four separate paths.