Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
Gongzheng
European Pressure Limiting Valve
- European Commercial Vehicles
- European Air Dryer
- European Unloader Valve
- European Circuit Protection Valve
- European Pressure Limiting Valve
- European Foot Brake Valve
- European Hand Brake Valve
- European Relay Valve
- European Trailer Valve
- European Release Valve
- European Load Sensing Valve
- European Levelling Valve
- European Solenoid Valve & Sensor
- European Abs&Ebs Valve
- European EBS Axle Modulator
- European Quick Release Valve
- European Gearbox Valve
- European Control Valve&Checking Valve
- European Brake Chamber
- European Others
- European Condensor&Drain Valve
- American Commercial Vehicles
European Pressure Limiting Valve Manufacturers
About Us
Zhejiang Gongzheng Machinery Co., Ltd.
Zhejiang Gongzheng Machinery Co., Ltd. is professional China European Pressure Limiting Valve Manufacturers and Wholesale European Pressure Limiting Valve Factory. 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.
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 Pressure Limiting Valve Industry knowledge
Zhejiang Gongzheng Machinery Co., Ltd. is a professional European Pressure Limiting Valve manufacturer and supplier, serving global commercial vehicle OEMs, fleet operators, and aftermarket distributors. Our pressure limiting valves are engineered to protect pneumatic circuits from overpressure, maintain stable system pressure, and extend the service life of downstream components such as brake chambers, air dryers, and control valves.
We produce a comprehensive range of European-standard pressure limiting valves for trucks, buses, trailers, and off-highway vehicles. Each valve is designed to meet the specific pressure, flow, and interface requirements of European air brake architectures, including those used by leading vehicle manufacturers. Our factory, spanning 30,000 m², integrates automated production lines, in-house component manufacturing, and IATF 16949 quality management to deliver consistent, reliable products.
Product Range and Application Fit
Our European pressure limiting valve category includes multiple models differentiated by set pressure, port configuration, flow capacity, and response characteristics. The table below summarises the key variants we supply and their typical applications.
| Model / Series | Set Pressure (Bar) | Port Size | Typical Application |
|---|---|---|---|
| Universal Pressure Limiting Valve | 5.3 | M22×1.5 / 1/4" NPT | General-purpose circuit protection for light to medium trucks |
| Industrial-Grade High-Response Valve | 6.2 – 8.0 | M26×1.5 / 3/8" NPT | Heavy-duty trucks, buses with high air demand |
| Reinforced Multi-Channel Valve | 7.0 – 8.5 | Multiple M22 / M26 ports | Trailer air supply, multi-circuit protection |
| Heavy-Duty Relief Valve | 8.5 – 10.0 | M30×1.5 / 1/2" NPT | Off-highway, construction, mining vehicles |
| 14.5 Bar Enhanced Safety Valve | 14.5 | M26×1.5 | High-pressure circuits, auxiliary systems |
We also supply specialised variants such as the Intelligent Feedback Pressure Limiting Valve (with integrated pressure switch for ECU monitoring) and the Dual-Channel Pressure Limiting Valve for redundant safety architectures. For Japanese medium trucks, we offer a dedicated model with compatible thread and pressure settings.
Critical Specifications and Performance
Every European pressure limiting valve we manufacture is tested for the following parameters:
- Set pressure accuracy – ±0.2 bar at rated flow, verified on calibrated test benches.
- Flow capacity – Up to 2000 L/min (ANR) depending on port size and internal orifice.
- Response time – Opening within 50 ms at 1 bar over set pressure.
- Operating temperature – -40°C to +85°C, with corrosion-resistant materials (aluminium alloy body, stainless steel spring, NBR/Buna-N seals).
- Cycle life – Minimum 1 million cycles without leakage or set-point drift.
Configuration and Customisation
We offer standard models from stock and support OEM/ODM customisation for volume programmes. Our engineering team can adjust the following parameters to match your vehicle architecture:
Set Pressure
From 4.0 to 16.0 bar in 0.1 bar increments
From 4.0 to 16.0 bar in 0.1 bar increments
Port Configuration
Metric, NPT, BSP, or custom thread forms
Metric, NPT, BSP, or custom thread forms
Electrical Integration
Optional pressure switch, hall-effect sensor, or PWM feedback
Optional pressure switch, hall-effect sensor, or PWM feedback
Material Options
Anodised aluminium, zinc-plated steel, or stainless steel for extreme environments
Anodised aluminium, zinc-plated steel, or stainless steel for extreme environments
Quality Assurance and Compliance
Our manufacturing facility is IATF 16949 certified, and every pressure limiting valve undergoes 100% functional testing before dispatch. We maintain in-house capability for:
- Leak testing (internal and external) at 1.5× set pressure.
- Flow bench verification across the full operating range.
- Environmental chamber testing for temperature and humidity extremes.
- Salt spray corrosion resistance (minimum 96 hours per ASTM B117).
Our valves comply with ECE R13 (brake system) and relevant ISO standards for pneumatic components. We provide material certificates, test reports, and dimensional inspection data upon request.
Installation, Maintenance, and Support
Each valve is supplied with installation instructions and recommended torque values. We advise the following maintenance schedule:
- Visual inspection every 50,000 km or annually for external damage or leakage.
- Functional check of set pressure during brake system service intervals.
- Replacement every 5 years or 500,000 km, whichever comes first, in normal operating conditions.
Our support team provides technical documentation, 3D models (STEP/IGES), and application engineering assistance for integration into new vehicle platforms or retrofit programmes. We maintain a standing inventory of over 200,000 units across our product range, enabling rapid sample delivery and volume fulfilment.
Information We Use to Configure Your Solution
To prepare a precise proposal and quotation, we require the following project information:
| Data Point | Why We Need It |
|---|---|
| Vehicle type and operating region | Determines applicable standards (ECE, EU, national) and typical pressure range. |
| System working pressure and flow demand | Ensures valve set point and orifice size match the compressor and circuit design. |
| Port type and thread specification | Guarantees direct fit without adapters. |
| Required electrical interface (if any) | For intelligent valves with feedback or diagnostic output. |
| Annual volume and delivery schedule | Enables us to propose the most cost-effective production and logistics plan. |
Frequently Asked Questions
What is the difference between a pressure limiting valve and a relief valve?
A pressure limiting valve (PLV) maintains a preset maximum pressure in a pneumatic circuit by venting excess air when the set point is exceeded. A relief valve typically opens fully at a set pressure to protect against overpressure events. In European air brake systems, PLVs are used for continuous pressure regulation, while relief valves serve as backup safety devices.
Can you supply valves with custom set pressures for non-standard applications?
Yes. We can adjust the spring preload and orifice design to achieve any set pressure between 4.0 and 16.0 bar. Custom calibration is available for OEM programmes with minimum order quantities.
Do your valves come with ECE R13 certification?
Our European pressure limiting valves are designed to meet ECE R13 requirements. We can provide certification documentation for individual part numbers upon request. Our ABS and EBS systems have obtained ECE R13 certification, and we apply the same quality standards to all pneumatic components.
What is the typical lead time for sample orders and volume production?
Sample orders from our standard range are typically dispatched within 5–7 working days. Volume production lead time depends on quantity and customisation level, but we maintain a buffer stock of over 200,000 units to support urgent requirements. Contact our sales team for current lead times on your specific configuration.
Do you offer technical support for integrating your valve into an existing brake system?
Yes. Our application engineers can review your system schematic, recommend the optimal valve location and setting, and provide installation drawings. We also offer on-site support for prototype builds and first-article validation.
Related Products and Categories
Our portfolio also includes Products, European Commercial Vehicles, European Air Dryer for applications with different operating ranges, interfaces or integration requirements.
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