Product Introduction: WG9000360523 Four Circuit Protection Valve
1. Product OverviewThe WG9000360523 Four Circuit Protection Valve is a critical component designed for heavy-duty truck air brake systems, specifically tailored for Sinotruk
HOWO models such as F2000, X3000, and M3000. As a safety-critical device, it ensures reliable braking performance by maintaining independent air supply to four distinct braking circuits, even when one or more circuits experience leaks or failures. This valve is manufactured with high-quality alloy steel to withstand extreme pressures and harsh operational conditions, adhering to ISO 9001 standards for durability and safety.
2. Function & Application
Primary Role: The valve acts as a 五通 connector, dividing the braking system into four independent circuits: front axle brakes, rear axle brakes, parking brakes, and auxiliary systems. If a circuit fails (e.g., due to a puncture or leakage), it automatically seals off the affected path while preserving pressure in the remaining circuits, ensuring continuous braking capability.
Safety Mechanism: By retaining approximately 6.5 bar of pressure in functional circuits during a failure, it prevents complete brake system collapse, reducing accident risks.
Compatibility: Ideal for heavy-duty trucks, trailers, and industrial machinery with air brake systems, including Sinotruk HOWO, Shacman, and Foton vehicles.
3. Technical Specifications
Design: Features a diaphragm-type structure with an inlet port and four outlet ports, enabling precise pressure regulation.
Pressure Characteristics:
Opening Pressure: Determined by a pre-tensioned spring, ensuring controlled gas flow to functional circuits.
Closing Pressure: Maintains minimum residual pressure in intact circuits during failures, preventing total depressurization.
Material: Constructed from corrosion-resistant steel for long-term reliability.
Certifications: Complies with ISO 9001 and automotive safety standards.
4. Key Advantages
Enhanced Safety: Mitigates risks of brake failure by isolating damaged circuits, meeting international safety requirements.
Durability: High-strength materials and robust design resist wear, corrosion, and mechanical stress.
Efficient Performance: Optimizes air distribution to ensure consistent braking force across all operational conditions.
Low Maintenance: Simple design reduces repair needs, with replaceable components for cost-effective servicing.
5. Installation & Maintenance
6. Purchase Information
Model: WG9000360523
Brand: Sinotruk HOWO
Origin: China
MoQ: 1 piece (customizable packaging available)
Price Range: Competitive pricing starting from USD 10–30 per unit, depending on order volume.
Conclusion
The WG9000360523 Four Circuit Protection Valve is a cornerstone of safe and reliable heavy-duty vehicle operations, combining advanced engineering with practical safety features. Its ability to maintain brake functionality under critical conditions makes it an indispensable component for commercial fleets and industrial applications worldwide.
Note: Technical parameters and pricing are subject to change. For precise details, contact authorized suppliers or refer to Sinotruk’s official documentation.
Basic Info.
Type
Four Circuit Protection Valve
Payment
Tt.Paypal.Western Union.Trade Assurance
Shipment
DHL TNT EMS UPS FedEx
Transport Package
Wooden Box
Specification
Standard size
Production Capacity
1000/Month
Product Description
Item Name | Four Circuit Protection Valve |
Part Number | WG9000360523 |
Engine Type | Diesel Engine |
Engine Model | HOWO |
Packing | Nature packing |
Weight | 1 kg |
Products Description
Brand | SINOTRUK/WABCO |
Quality | Original/Copy |
Application | For Heavy Truck |
MOQ | 1 Pcs |
Customized | Accept |
Details Images

FAQ
A)Who are we?
We're truck and parts supplier from Shandong, China
B) How soon can it be shipped
Within 7-15 days after payment
C)How about your product quality?
All our products are from the original manufacturers, the quality is 100% guaranteed