303.02.0095 4-circuit protection valve
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303.02.0095 4-circuit protection valve — KNORR-BREMSE

303.02.0095

Summary

●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Opening Pressure 21: 6,5 BAR ●Opening Pressure 22: 6,5 BAR ●Opening Pressure 23: 7,3 BAR ●Opening Pressure 24: 7,3 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 Code8683457009530
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Description

This heavy-duty grade component serves as a critical element in the pneumatic brake system, ensuring precise pressure regulation across multiple circuits. Designed for high-strength performance, it maintains the integrity of the air supply by managing circuit isolation during pressure fluctuations.

303.02.0095 is the OE-equivalent of the KNORR-BREMSE AE 4443 4-circuit protection valve used in heavy commercial vehicle brake systems. This part is engineered to meet exact technical specifications for reliable operation in demanding environments.

The assembly features multiple connection points including Port 1 (M22x1,5) and four M16x1,5 ports (Ports 21 through 24). Workshop technicians should verify the specific opening pressures—6,5 BAR for ports 21 and 22, and 7,3 BAR for ports 23 and 24—to ensure optimal system synchronization and safety during maintenance and inspection.

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 237,3 BAR
Opening Pressure 247,3 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 4443
  • AE4443

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

What is the compatibility of this part with OEM systems?
The 303.02.0095 is fully compatible with the KNORR-BREMSE AE 4443 system requirements.
What are the specific port sizes 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 opening pressure specifications for the circuits?
The opening pressures are 6,5 BAR for ports 21/22 and 7,3 BAR for ports 23/24.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for heavy commercial vehicle pneumatic brake systems.
What is the closing pressure for all ports?
All four ports (21, 22, 23, and 24) have a closing pressure of 4,5 BAR.