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303.02.0010 4-circuit protection valve

303.02.0010

Summary

This high-strength 4-circuit protection valve features a primary port of M22x1,5 and four M16x1,5 secondary ports. It is designed for heavy commercial vehicle brake systems with a maximum operating pressure of 10 BAR, ensuring reliable pneumatic circuit protection for MAN and Mercedes-Benz applications.

EAN Code8699031090443
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Compatible OEM Codes

  • MERCEDES BENZ 002 431 93 06 002 431 29 06 002 431 04 06 001 431 84 06 001 431 47 06 001 431 39 06 001 431 35 06
  • MAN 81.52151-6063 81.52151-6056 81.52151-6054 81.52151-6033 81.52151-6032 81.52151-6023 81.52151-6020
  • KNORR-BREMSE I73329 AE 4162

Description

The precision-engineered 4-circuit protection valve serves as a critical component within the pneumatic braking system, ensuring the stable distribution of air pressure across multiple circuits. This component is engineered with high-strength components to maintain consistent performance under demanding heavy commercial vehicle operating conditions.

The 303.02.0010 is the OE equivalent of the KNORR-BREMSE AE4162 and I73329 used in MAN and Mercedes-Benz systems. This part features a primary port of M22x1,5 and four auxiliary ports (12, 21, 22, 23, 24) with M16x1,5 specifications. It is fully compatible with MAN 81521516023, 81521516056, 81521516063 and Mercedes-Benz 0014313506, 0014313906, 0024319306 systems. The 303.02.0010 is the OE equivalent of the KNORR-BREMSE AE4162 used in MAN and Mercedes-Benz vehicles.

Technical specifications include an opening pressure of 7 BAR for ports 21 through 24 and a closing pressure of 5 BAR for these same circuits, operating at a maximum pressure of 10 BAR. For workshop technicians, verifying the port threading (M22x1,5 and M16x1,5) during installation is essential to ensure a leak-free connection within the pneumatic circuit.

Maintenance of this valve is vital for maintaining braking system integrity. Regular inspections of the connection points and pressure thresholds help prevent system failures in heavy commercial transport applications.

Technical Specifications

Port 1M22x1,5
Port 12M16x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 11M16x1,5
Port 23M16x1,5
Port 24M16x1,5
PressureMAX 10 BAR
Opening Pressure 217 BAR
Opening Pressure 227 BAR
Opening Pressure 237 BAR
Opening Pressure 247 BAR
Closing Pressure 215 BAR
Closing Pressure 225 BAR
Closing Pressure 235 BAR
Closing Pressure 245 BAR

Other OEMs

KNORR-BREMSE

  • AE4162
  • I73329
  • AE 4162

MAN

  • 81521516063
  • 81521516056
  • 81521516054
  • 81521516033
  • 81521516032
  • 81521516023
  • 81521516020
  • 81-52151-6063
  • 81-52151-6056
  • 81-52151-6054
  • 81-52151-6033
  • 81-52151-6032
  • 81-52151-6023
  • 81-52151-6020
  • 81.52151-6063
  • 81.52151-6056
  • 81.52151-6054
  • 81.52151-6033
  • 81.52151-6032
  • 81.52151-6023
  • 81.52151-6020

MERCEDES BENZ

  • A0024319306
  • A0024312906
  • A0024310406
  • A002 431 93 06
  • A002 431 29 06
  • A002 431 04 06
  • A0014318406
  • A0014314706
  • A0014313906
  • A0014313506
  • A001 431 84 06
  • A001 431 47 06
  • A001 431 39 06
  • A001 431 35 06
  • 0024319306
  • 0024312906
  • 0024310406
  • 002.431.9306
  • 002.431.93.06
  • 002.431.2906
  • 002.431.29.06
  • 002.431.0406
  • 002.431.04.06
  • 002-431-93-06
  • 002-431-29-06
  • 002-431-04-06
  • 002 431 9306
  • 002 431 2906
  • 002 431 0406
  • 0014318406
  • 0014314706
  • 0014313906
  • 0014313506
  • 001.431.8406
  • 001.431.84.06
  • 001.431.4706
  • 001.431.47.06
  • 001.431.3906
  • 001.431.39.06
  • 001.431.3506
  • 001.431.35.06
  • 001-431-84-06
  • 001-431-47-06
  • 001-431-39-06
  • 001-431-35-06
  • 001 431 8406
  • 001 431 4706
  • 001 431 3906
  • 001 431 3506
  • 002 431 93 06
  • 002 431 29 06
  • 002 431 04 06
  • 001 431 84 06
  • 001 431 47 06
  • 001 431 39 06
  • 001 431 35 06

Related Products

Vehicles Used

BrandModelModel TypeEngine
KNORR-BREMSE
MAN
MERCEDES BENZ

FAQ

What are the technical port specifications for this valve?
The unit features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 12, 21, 22, 23, and 24) for secure pneumatic connections.
Which OEM reference numbers are compatible with this part?
Compatible OEM codes include AE4162, I73329, 81521516023, 81521516056, 81521516063, 0014313506, 0014313906, 0014314706, 0014318406, 0024310406, 00243 way to ensure fitment.
What are the pressure threshold settings?
The valve operates at a maximum of 10 BAR. The opening pressure for ports 21 to 24 is set at 7 BAR, while the closing pressure is set at 5 BAR.
Is this component suitable for heavy commercial vehicles?
Yes, this part is designed specifically for heavy commercial vehicle brake systems used by manufacturers like MAN and Mercedes-Benz.
How can I identify if this valve needs replacement?
Technicians should monitor for irregular pressure drops in the pneumatic circuits or failures to meet the specified opening/closing pressure thresholds.