The 2-7KG CO2 extinguisher Valve is designed for portable CO₂ fire extinguishers with a nominal capacity of 2–7 kg.The valve provides three main functions within the extinguisher assembly:
l Maintining the sealed connection with the pressurized cylinder during storage.
l Providing the operating mechanism for controlled discharge.
l Connecting the cylinder to the external discharge component.
The valve body, internal sealing components, operating mechanism and connection specifications should be selected according to the pressure rating and design requirements of the complete extinguisher.
| INLET THREAD | PZ28.8 |
| OUTLET THREAD | W21.8-14 |
| GAUGE THREAD | M10*1 |
The PZ28.8 inlet connection is used to interface the valve with the specified CO₂ extinguisher cylinder.
The cylinder neck specification, thread tolerance and sealing method should be matched with the valve during assembly. Correct installation and the appropriate sealing components are required to achieve the specified connection and sealing performance.
The W21.8-14 outlet provides the connection between the valve and the corresponding CO₂ discharge component.
The outlet configuration should be matched with the discharge horn or other downstream component specified for the extinguisher assembly.
The M10 × 1 connection should be configured according to its intended function in the final valve assembly, such as a pressure-gauge or dip-tube connection.
The exact function and dimensional requirements should be confirmed on the approved technical drawing.
The safety mechanism prevents unintended operation during storage and transport. Releasing the safety mechanism allows the operating handle to move.
When the red operating handle is pressed, the internal valve mechanism is actuated.
The valve mechanism opens the internal passage between the pressurized cylinder and the outlet.
Pressurized CO₂ passes through the valve and into the connected discharge horn or outlet component.
When the operating handle is released, the valve mechanism returns toward its closed position according to the specific valve design.
Actual discharge characteristics depend on cylinder pressure, filling conditions, valve configuration, discharge components and operating conditions.
A1: As a National High-Tech Enterprise, Kaituo Valve possesses strong in-house R&D capabilities:
Patent Portfolio: We hold 41 national patents covering various technical fields, including portable quick-install opposed valves, handwheel-type gas valves for gas transport, CO₂ valve assemblies, dry powder puncture valves, and high-power stored-pressure dry powder valves.
Innovative Designs: For example, our high-power stored-pressure dry powder valve features a separate design for dry powder and compressed gas, ensuring zero internal pressure during storage for enhanced safety, while facilitating batch filling and maintenance.
Continuous R&D: We maintain a dedicated R&D center and testing facility equipped with high-precision instruments, continuously improving processes and product performance.
A2: Our quality management system covers the entire product lifecycle:
Raw Material Control: We select standard-compliant copper alloys, stainless steel, and other materials that offer corrosion resistance and high-pressure endurance.
Precision Machining: Valve bodies undergo forging and precision machining, followed by anti-corrosion treatments such as passivation and electrophoretic coating, ensuring smooth and defect-free surfaces.
Multiple Testing Procedures: Products are subjected to hydrostatic pressure tests, sealability tests, overpressure protection device activation tests, and more, ensuring reliable performance.
International Certifications: Our products meet CE, EN, and other international standards, earning recognition from customers in dozens of countries worldwide.
A3: Yes, we support customization services. Customers can choose from:
Surface Finishes: Chrome plating or nickel plating to meet different corrosion resistance and aesthetic requirements.
Thread Specifications: Customized to match customer cylinder interface requirements.
Product Specifications: Valve designs compatible with different extinguisher capacities.
For specific MOQ information, please contact our sales team directly.
Address
Factory: Huilong Village, Huangjiabu Town, Yuyao City, Zhejiang Province, China
Branch Office: Hengye Building 509, No.158 Tai'an Middle Road, Yinzhou District, Ningbo, Zhejiang, China
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