301.01.0027 Unloader Valves
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301.01.0027 Unloader Valves WABCO Compatible

301.01.0027

Summary

●Port 1: M22x1,5 ●Port 4: M12x1,5 ●Port 21: M22x1,5 ●Port 23: M12x1,5 ●Plugged: OK ●Cut-Out Pressure: 9,5 BAR/0,2 BAR ●Inflation Valve: - ●Recycle Valve: -

EAN Code8683457011120
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Description

The high-strength components of this unloader valve ensure reliable pneumatic regulation within the brake system. Designed for heavy commercial vehicle applications, this part provides precise pressure control to maintain system stability during operation.

301.01.0027 is the OE-equivalent of the WABCO 975 303 085 0 unloader valve used in Mercedes Benz, IVECO, and EVOBUS heavy commercial vehicles. This component is engineered to meet strict industrial standards, ensuring seamless integration with existing braking hardware and maintaining optimal pressure thresholds.

Technical specifications include Port 1 (M22x1,5), Port 4 (M12x1,5), Port 21 (M22x1,5), and Port 23 (M12x1,5) to ensure a precise fit. Workshop technicians should verify the cut-out pressure settings of 9,5 BAR / 0,2 BAR during installation to ensure the component functions correctly within the pneumatic circuit.

This unloader valve is specifically designed for heavy-duty use in professional vehicle servicing. It serves as a critical element in maintaining the air pressure cycles required for safe heavy-duty vehicle movement.

Technical Specifications

Port 1M22x1,5
Port 4M12x1,5
Port 21M22x1,5
Port 22-
Port 23M12x1,5
PluggedOK
Cut-Out Pressure9,5 BAR / 0,2 BAR
Inflation Valve-
Recycle Valve-

Other OEMs

IVECO

  • 61259232

MERCEDES BENZ

  • 002 431 66 06
  • 0024316606
  • A0024316606

WABCO

  • 975 303 085 0
  • 9753030850

Related Products

Repair Kits

Vehicles Used

BrandModelEngine
EVOBUS
IVECO
MERCEDES BENZ
WABCO

FAQ

Which vehicle brands is this unloader valve compatible with?
This part is compatible with systems from IVECO (61259232), MERCEDES BENZ (002 431 66 06), and WABCO (975 303 085 0).
What are the port specifications for this component?
The unit features Port 1 (M22x1,5), Port 4 (M12x1,5), Port 21 (M22x1,5), and Port 23 (M12x1,5) for precise assembly.
What is the operating cut-out pressure for this valve?
The device operates with a cut-out pressure range of 9,5 BAR / 0,2 BAR to ensure stable pneumatic regulation.
Is this part suitable for heavy commercial vehicles?
Yes, it is designed specifically for heavy commercial vehicles including trucks and buses from IVECO and MERCEDES BENZ.
Does this part include an inflation or recycle valve?
This specific model does not include an integrated inflation valve or recycle valve functionality.