Coliter ® Aluminum Alloy Gas Automatic Shut-off Valve, 2kPa, -20–60°C, BSP Threaded
AQ3009 Aluminum Alloy Gas Automatic Shut-off Valve – Fail-Safe Emergency Cut-Off for Natural Gas Systems
The Coliter® AQ3009 Aluminum Alloy Gas Automatic Shut-off Valve is a lightweight, fail-safe safety valve designed to automatically cut off the flow of natural gas in response to hazardous conditions—such as gas leakage, abnormal pressure, or power failure—when integrated with a compatible gas alarm system. Constructed from high-strength aluminum alloy, it offers excellent corrosion resistance and reduced weight while maintaining reliable sealing performance. Rated for a nominal pressure of 2 kPa and operating temperatures from -20°C to 60°C, it complies with Chinese gas safety standards. The valve features ISO 228 (BSP parallel) pipe threads—standard size DN15 (G1/2")—and supports both 24V and 220V control signals. Upon receiving a shut-off command or loss of power, its internal spring-return mechanism closes the valve within seconds, providing critical protection against fire, explosion, or gas accumulation in residential, commercial, and utility applications.
Installation diagram
Product Description
| DN | G | L | H |
| 15 | G1/2" | 130.7 | 54.5 |
Technical Specifications
Nominal Pressure: 2KPa
Working Medium: Natural Gas
Working Temperature: -20℃ ≤ t ≤ 60℃
Pipe Threads: ISO 228
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Faq - Frequent questions
Introduction to Automatic Shut-off Valve For Pipeline Gas
Coliter® offers certified automatic shut-off valves for pipeline gas, engineered to instantly cut off natural gas or LPG flow upon detecting abnormal pressure, leakage, or power failure—ensuring safety in residential, commercial, and industrial installations. Available in brass (AQ3108/AQ3008) and lightweight aluminum alloy (AQ3109/AQ3009) bodies, these valves feature fail-safe spring-return mechanisms, 24V/220V actuation options, and compliance with Chinese gas safety standards. Designed for integration with gas alarm systems, they respond within seconds to potential hazards. Ideal for kitchens, boiler rooms, and gas meter stations—backed by rigorous testing and OEM-ready for global safety solutions.
