303.02.0050 4-circuit protection valve
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303.02.0050 KNORR-BREMSE 4-circuit protection valve

303.02.0050

Summary

●Port 1: M22x1,5 ●Port 21: M16x1,5 ●Port 22: M16x1,5 ●Port 23: M16x1,5 ●Port 24: M16x1,5 ●Operating Pressure: 13 BAR ●Opening Pressure 21: 7 BAR ●Opening Pressure 22: 7 BAR ●Opening Pressure 23: 7 BAR ●Opening Pressure 24: 7 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

EAN Code8683457005297
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Description

The heavy-duty grade materials used in this component ensure reliable pneumatic regulation within the brake system. This part functions as a critical safety element, managing pressure distribution across multiple circuits to maintain system integrity under high-stress conditions. Its robust construction is specifically designed to withstand the rigorous demands of heavy commercial vehicle operations.

303.02.0050 is the OE equivalent of the KNORR-BREMSE AE 4644 and K019907N00 4-circuit protection valve used in KNORR-BREMSE systems. This technical component is engineered to meet strict performance standards, ensuring precise pressure control and long-term reliability in heavy commercial vehicle braking applications.

For workshop technicians, this valve offers straightforward installation with standardized port sizes including Port 1 (M22x1,5) and Ports 21 through 24 (M16x1,5). It is essential to verify the opening and closing pressures during routine maintenance to ensure the system operates within the specified limits of 7 BAR opening and 5,5 BAR closing for all circuits. Regular checks of the pneumatic lines and port connections will help maintain optimal service intervals and prevent pressure drops.

Technical Specifications

Port 1M22x1,5
Port 21M16x1,5
Port 22M16x1,5
Port 23M16x1,5
Port 24M16x1,5
Operating Pressure13 BAR
Opening Pressure 217 BAR
Opening Pressure 227 BAR
Opening Pressure 237 BAR
Opening Pressure 247 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 4644
  • K019907N00
  • AE4644

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
KNORR-BREMSE

FAQ

What are the compatible OEM numbers for this part?
This product is compatible with OE codes AE 4644 and K019907N00 from KNORR-BREMSE.
What are the port specifications for installation?
The unit features one M22x1,5 port (Port 1) and four M16x1,5 ports (Ports 21, 22, 23, and 24).
What is the operating pressure of this valve?
The operating pressure is rated at 13 BAR, with a maximum pressure capacity of up to 20 BAR.
At what pressure do the circuits open and close?
The opening pressure for all four circuits is set at 7 BAR, while the closing pressure is set at 5,5 BAR.
Is this part suitable for heavy commercial vehicles?
Yes, this is a professional-grade component designed specifically for heavy commercial vehicle brake systems.