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Four-Circuit Protection Valve with M16/M22 Ports

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  • Four-Circuit Protection Valve with M16/M22 Ports
  • Four-Circuit Protection Valve with M16/M22 Ports

Four-Circuit Protection Valve with M16/M22 Ports

The four-circuit protection valve is an indispensable safety component in commercial vehicle air brake systems, responsible for distributing compressed air into four independent subsystems. The product is designed with an M22x1.5 inlet and M16x1.5 outlets, featuring an opening pressure set between 7.0-0.3 Bar. It serves as an extensive replacement for OEM part number 9347022500, compatible with a wide range of truck and chassis models.The technical hallmark of this product is its high degree of circuit independence. The internal valve core is precision-engineered so that if one braking circuit develops a leak or fails, causing a pressure drop, the protection valve automatically isolates the faulty circuit. This ensures that the remaining healthy circuits maintain operational pressure, thereby preserving fundamental braking capability. Such redundant design is a mandatory safety standard for modern commercial vehicle braking systems, and the stability of its opening pressure guarantees coordinated operation across all system sections.The advantages of choosing this four-circuit protection valve include its superior fault isolation capabilities and long-term stability. The valve body is constructed from high-quality alloys resistant to oxidation and high-pressure impacts, capable of adapting to frequent pressure transitions. By optimizing the internal airway structure, the valve reduces air flow resistance and accelerates system charging speeds. For long-distance buses and heavy trucks, this valve is not only the final shield for braking safety but also a necessary investment to enhance air system reliability and minimize downtime for repairs.
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Zhejiang Gongzheng Machinery Co., Ltd.
Zhejiang Gongzheng Machinery Co., Ltd. is a professional manufacturer specializing in high-quality commercial vehicle control systems and braking components. 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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