Product Overview

The Elyt four-hole foot brake master valve (brake master cylinder), models: WG9719360005, WG9719360002, 4613150120, etc. (WABCO original or matching parts), is a core component of the air brake system designed specifically for heavy-duty trucks such as Sinotruk Howo T7H, Sinotruk C7H/C9H, and Howo J7G/N7G. It adopts an aluminum alloy housing and a dual-chamber piston structure, precisely connecting the front and rear brake circuits through four-hole interfaces (11, 12, 21, 22) to achieve efficient transmission of brake signals and system safety protection. The product is strictly controlled... Following WABCO's original technical standards, it ensures seamless compatibility with mainstream heavy-duty truck air braking systems.

Brand and Manufacturer: YILAITE
Compatible Models: Sinotruk Howo T7H, Sinotruk C7H/C9H, Howo J7G/N7G, and other heavy-duty trucks
Core Values: Lightweight design, high reliability, and safety redundancy

Structural Features and Technological Innovations

1. Aluminum Alloy Shell: Dual Advantages of Lightweight and Corrosion Resistance

Made of high-strength aluminum alloy, the shell weight is 30% lighter than traditional cast iron structures.%, effectively reducing the overall load on the vehicle.

The surface undergoes special anti-corrosion treatment, adapting to the long-term high-load operating environment of heavy trucks, significantly improving its resistance to salt spray and aging.

2. Four-hole interface design: precise connection and system integration

The interfaces are marked as 11, 12, 21, and 22, corresponding to the air pipe connections of the front and rear brake circuits, ensuring the accuracy and stability of air pressure signal transmission.

The interface size is completely consistent with the original Wabco parts, supporting direct replacement without additional modification.

3. Dual-chamber piston structure: Safety redundancy and fault protection

The built-in dual-chamber piston design ensures that if one chamber fails, the other chamber can independently maintain braking function, preventing brake failure due to a single component malfunction.

The piston stroke and air pressure response are precisely calibrated to ensure that the front and rear wheel braking synchronization rate reaches over 98% when the brake pedal is depressed.

Functional role and system value

1. Core of brake signal transmission

As the "nerve center" of the air braking system, it transmits the mechanical signals from the driver pressing the brake pedal...The action is converted into a pneumatic signal, driving the front and rear wheel brakes to perform braking.

Supports stepless adjustment of braking intensity to adapt to braking needs under different road conditions (such as steep mountain slopes and congested urban roads).

2. Safety Redundancy Design

The dual-chamber piston structure and independent air circuit design ensure that even if one chamber fails to seal, braking can still be maintained through the other chamber, avoiding the risk of accidents.

Built-in pressure balance valve prevents brake vibration or deviation caused by air pressure fluctuations.

3." Lightweight and Energy Efficiency Optimization

The aluminum alloy housing and compact design reduce the overall weight of the braking system, lowering fuel consumption.

Optimized air passages reduce air pressure transmission resistance and improve braking response speed (response time ≤ 0.15 seconds).

Compatibility and Installation Advantages

1. Original Equipment Manufacturer Compatibility

Strictly adheres to the air braking system design standards of models such as Sinotruk Howo and Sinotruk Shandeka, with interfaces and piping layouts fully matching the original vehicle.

Supports interchangeability with WABCO original parts, ensuring ease of system upgrades or repairs.

2. Simplified Installation Process

Adopts modular design; during installation, only the four-hole interface needs to be connected to the brake pedal linkage mechanism, without additional adjustments.

Provides installation positioning marks to ensure the accuracy of valve body installation angle and air circuit connection.

Brand and Service Support

Production Guarantee: Zhejiang Chuangtuo Automotive Parts Co., Ltd. relies on automated production lines to ensure batch consistency and quality stability of products.

After-sales System: Provides technical consultation and fault diagnosis services to assist users in quickly locating abnormalities in the air brake system.

Warranty Policy: The product enjoys a 2-year warranty, and damage caused by quality problems will be replaced free of charge during the warranty period.