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European Commercial Vehicles

Air Brake Valve Manufacturers

About Us
Zhejiang Gongzheng Machinery Co., Ltd.
Zhejiang Gongzheng Machinery Co., Ltd. is professional China Air Brake Valve Manufacturers and Custom European Air Brake Valve Suppliers. Our core products include ABS (Anti-lock Braking System) and EBS (Electronic Braking System) control units, air dryers, air brake valves, and spring brake chambers, designed to meet the rigorous demands of the global commercial vehicle industry.

With advanced production technology, strict quality control, and a commitment to innovation, we provide reliable and efficient solutions for truck and trailer manufacturers worldwide. Our products comply with international standards, ensuring safety, durability, and superior performance in diverse operating conditions.

Key Products:
ABS & EBS Control Systems – Enhancing vehicle safety and stability.
Air Dryers – Ensuring clean, moisture-free air for braking systems.
Air Brake Valves – Precision-engineered for optimal braking performance.
Spring Brake Chambers – Robust design for heavy-duty applications.


At Zhejiang Gongzheng Machinery, we prioritize customer satisfaction, technological advancement, and sustainable growth. Partner with us for trusted braking solutions that drive excellence.
Safety. Reliability. Innovation.
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European Commercial Vehicles Industry knowledge

Zhejiang Gongzheng Machinery Co., Ltd. is a professional European Commercial Vehicles manufacturer and supplier, specializing in high-quality control systems and braking components for trucks, trailers, and buses. Our product family covers the complete pneumatic and electronic brake system—from air treatment and pressure regulation to actuation and electronic stability control. We engineer components that meet European design standards, with a focus on durability, precision, and system compatibility.

Our European Product Range

We supply over 20 subcategories of European-specification components, each engineered for specific functions within the air brake system. Below is the available range with application fit:

Product Category Function & Application
European Air Dryer Removes moisture and contaminants from compressed air; essential for system longevity. Available in cartridge and integrated assembly formats.
European Unloader Valve Controls compressor output pressure; includes models with integrated tire inflation port and safety valve.
Wholesale European Circuit Protection Valve Manufacturers Distributes air to independent circuits and protects against pressure loss; four-circuit and two-circuit variants.
European Pressure Limiting Valve Limits maximum pressure in secondary circuits; used for auxiliary systems.
European Foot Brake Valve Modulates service brake pressure proportionally to pedal travel; dual-circuit design for redundancy.
European Hand Brake Valve Controls spring brake application for parking and emergency braking.
European Relay Valve Provides rapid brake application and release on rear axles by locally supplying air.
European Trailer Valve Manages air supply and brake signals between tractor and trailer; includes emergency brake function.
European Release Valve Allows manual release of spring brakes for towing or maintenance.
European Load Sensing Valve Adjusts rear brake pressure based on axle load to prevent wheel lock.
European Levelling Valve Controls air suspension height and maintains chassis level under varying loads.
European Solenoid Valve & Sensor Electropneumatic valves and pressure/position sensors for automated system control.
European Abs&Ebs Valve Modulates brake pressure during ABS/EBS events; integrates with electronic control units.
European EBS Axle Modulator Provides precise individual wheel pressure control for advanced electronic braking systems.
European Quick Release Valve Expedites air exhaust from brake chambers to speed up brake release.
European Gearbox Valve Pneumatic valve for gearbox range-change or auxiliary functions.
European Control Valve&Checking Valve Includes check valves, shuttle valves, and pilot-operated control valves for system logic.
European Brake Chamber Converts air pressure into mechanical force; available as service, spring brake, and combination chambers.
European Others Additional pneumatic components for specialized European vehicle applications.
European Condensor&Drain Valve Condenses and expels moisture from the air system; automatic drain function.

Application Fit & Engineering Value

Our European components are designed for heavy-duty trucks, tractor-trailers, buses, and light commercial vehicles operating under European road conditions. We support both OEM production and aftermarket replacement with parts that match original specifications for mounting, port configuration, pressure range, and response characteristics.

We manufacture over 70% of component parts in-house, including aluminum and steel housings, diaphragms, springs, and seals. This vertical integration allows us to control quality from raw material to final assembly. Our factory operates a 30,000 m² facility with automated production lines and a dedicated R&D laboratory focused on ABS/EBS integration and pneumatic performance testing.

Critical Specifications & Configuration

Each product type is defined by key parameters that we match to the vehicle system:

  • Pressure rating: Typically 8.1 bar, 9.5 bar, or 10 bar depending on valve type and application.
  • Port size and thread: M16, M22, PTF, or flange connections per European standards.
  • Flow capacity: Expressed as effective cross-sectional area (mm²) for relay and protection valves.
  • Opening/closing pressure: Critical for circuit protection and unloader valves.
  • Electrical interface: For solenoid valves, ABS/EBS valves, and sensors—voltage (12V/24V), connector type, and PWM compatibility.
  • Mounting style: Stud, bracket, or flange mounting with defined bolt patterns.

We configure each product based on the target vehicle model, system architecture, and operating environment. For customized requirements, our engineering team can modify port configurations, pressure settings, or electrical connectors.

Quality Assurance & Compliance

Our quality management system is certified under IATF 16949, the automotive industry standard. We also hold ISO 9001 certification and have obtained TÜA (Germany) certification for specific product lines. Our ABS and EBS components comply with ECE R13, the European regulation for braking systems. Every production batch undergoes functional testing, leak testing, and dimensional inspection before release.

Automation Integration & Support

For vehicles equipped with electronic braking systems, we supply solenoid valves, ABS/EBS valves, and axle modulators that interface directly with the vehicle's electronic control unit (ECU). Our R&D team has experience integrating pneumatic components with CAN bus communication and pressure sensors. We provide technical documentation, including installation manuals, wiring diagrams, and diagnostic procedures.

Information We Use to Configure Your Solution

To prepare an accurate proposal and select the correct components, we need the following project information:

  • Vehicle make, model, and year (or original part number for replacement).
  • System type: standard pneumatic, ABS, or full EBS.
  • Required pressure rating and port configuration.
  • Quantity and delivery timeline.
  • Any special environmental conditions (e.g., extreme temperatures, corrosive environments).
  • For OEM projects: target production volume and interface specifications.

We maintain a standing inventory of over 200,000 units across our product range, enabling fast sample shipment and volume order fulfillment.

Frequently Asked Questions

What is the difference between European and American air brake components?

European components typically use metric threads (M16, M22), different port configurations, and pressure settings (8.1 bar vs. 10 bar common in US systems). Valve response characteristics and mounting patterns also differ. We manufacture both lines separately to ensure correct fit and function.

Can you provide samples for testing before bulk order?

Yes. We can supply samples for functional evaluation. For standard parts, samples are typically available within 5-7 working days. Customized samples require 2-3 weeks depending on complexity.

Do your EBS axle modulators work with all major ECU brands?

Our EBS axle modulators are designed to be compatible with common European ECU platforms. We recommend confirming the specific ECU model and communication protocol so we can match the modulator's electrical and pneumatic characteristics.

What certifications do your European brake chambers hold?

Our brake chambers are manufactured under IATF 16949 quality systems and comply with ECE R13 requirements for performance and durability. Specific test reports are available upon request.

How do you ensure moisture-free air delivery in your air dryers?

Our air dryers use desiccant cartridges with integrated regeneration and check valve systems. The cartridge design is optimized for European compressor output and ambient conditions. We offer both standard and high-capacity cartridges for different duty cycles.

What is the typical lead time for a container order of mixed European valves?

For a mixed 20-foot container (approximately 10-15 pallets), lead time is typically 25-35 days from order confirmation, depending on the specific product mix and current production schedule.

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