2-9KG Portable CO2 Fire Extinguisher Valve

The ANKE 2-9KG Portable CO2 Fire Extinguisher Valve is designed as the primary control valve installed on portable CO2 fire extinguisher cylinders. It performs three main functions:

Sealing the CO2 cylinder and maintaining the extinguishing agent under pressure.

Controlling CO2 discharge when the operating handle is actuated.

Providing pressure-relief protection through an integrated safety device.

The valve is manufactured for high-pressure CO2 service and is suitable for fire extinguisher manufacturers, fire protection equipment distributors, OEM brands, and cylinder assembly companies requiring a dedicated CO2 extinguisher valve.

Its single-piece forged copper construction provides a continuous pressure-containing body and reduces the number of joints within the pressure boundary. The manufacturing process includes forging, precision machining, surface finishing, assembly, and functional inspection.

The external surface is available in chrome-plated or nickel-plated finishes, depending on customer requirements. These finishes are intended to provide additional resistance to environmental corrosion and surface wear during storage, transportation, and service.

The valve incorporates a 200 ± 15 bar safety device, which is designed to provide over-pressure protection for the CO2 cylinder. The exact suitability of the safety-device setting should always be evaluated together with the cylinder design, filling specification, applicable standard, and local regulatory requirements.

Key Product Features

· Product type: Portable CO2 fire extinguisher cylinder valve

· Valve body: Single-piece forged copper 

· Inlet thread: M25×2

· Outlet thread: W21.8-14

· Dip tube thread: M10×1

· Safety device: 200 ± 15 bar 

· Surface finish: Chrome-plated or nickel-plated

· OEM/ODM: Available

· Customization: Thread, surface treatment, marking, packaging and other configuration options

The technical parameters above are based on the supplied product specification, including the four dimensions shown in the product drawing/image.

Technical Specifications

Materials & Construction

Single-Piece Forged Copper Body

The 2-9KG Portable CO2 Fire Extinguisher Valve body is manufactured from a single copper rod billet through a forging process. Unlike constructions that rely on welded pressure-boundary components, the main valve body is formed as an integrated forged component.

This manufacturing approach provides a robust pressure-containing structure and supports consistent machining of the valve's internal passages, sealing surfaces, and threaded connections.

For CO2 fire extinguisher applications, where the valve must continuously contain pressurized carbon dioxide during storage and transportation, material consistency and dimensional control are important factors in valve reliability.

Corrosion-Resistant Surface Treatment

The external valve surfaces can be finished with either:

· Chrome plating 

· Nickel plating 

The plating provides an additional protective surface layer against atmospheric corrosion and mechanical wear. This is particularly relevant for fire extinguishers stored in humid, coastal, industrial, commercial, or other demanding environments.

Surface treatment can be selected according to the customer's application, appearance requirements, and market specifications.

Ergonomic Operating Handle

The valve uses a squeeze-grip operating handle designed for manual activation.

The handle geometry provides a practical grip for the operator while the internal valve mechanism controls the opening and closing of the CO2 flow path.

Handle color, configuration, markings, and other external details can be customized for OEM applications where required.

Safety Device

The valve incorporates a 200 ± 15 bar safety device.

Its purpose is to provide a pressure-relief path if the cylinder pressure reaches the specified activation range.

Because CO2 cylinder pressure varies with temperature and cylinder design, the safety-device setting should not be evaluated independently from the complete extinguisher assembly.

For production applications, the manufacturer and cylinder producer should confirm:

Cylinder design pressure

Maximum allowable working pressure

Test pressure

CO2 filling quantity

Safety-device activation pressure

Applicable local or international standards

the safety-device setting as 200 ±15 bar.

Typical Applications

The 2-9KG Portable CO2 Fire Extinguisher Valve can be used as a component of portable CO2 fire extinguishers intended for applications such as:

Electrical Equipment Areas

CO2 fire extinguishers are commonly used around electrical equipment because carbon dioxide does not leave the same type of solid extinguishing residue associated with dry powder extinguishing agents.

Typical locations include:

· Server rooms

· Electrical rooms

· Switchgear areas

· Control panels

· Laboratories

Commercial and Industrial Facilities

CO2 extinguishers may be used for specific fire risks involving flammable liquids and electrical equipment in:

· Manufacturing facilities

· Workshops

· Laboratories

· Commercial buildings

· Industrial equipment areas

Marine and Coastal Environments

Where fire extinguishers are exposed to humid or salt-laden environments, the valve's optional chrome or nickel surface treatment can provide an additional layer of corrosion protection.

The original product information identifies electrical equipment rooms, industrial manufacturing, commercial kitchens, and marine/offshore environments as typical application areas.

OEM & ODM Customization

The standard valve configuration can be customized according to customer requirements.

Available Customization

Customers can provide an existing valve sample or technical drawing. The engineering team can review the dimensions and functional requirements before proposing a suitable production configuration.

We existing documentation confirms OEM/ODM services, customer drawing/sample development, customized threads, surface finish, markings and packaging. 

FAQ

Q1: What size CO2 fire extinguishers is this valve designed for?

The product is identified as a 2-9KG Portable CO2 Fire Extinguisher Valve. However, the supplied technical document previously specified a 2–7 kg application range. For a 9 kg CO2 extinguisher application, the final cylinder, valve, safety-device and certification configuration should therefore be confirmed by the manufacturer before production.

Q2: What is the safety-device pressure?

The safety device is specified at 200 ± 15 bar. The actual application should be evaluated together with the cylinder specification and applicable pressure requirements.

Q3: What material is the valve made from?

The valve body is manufactured from single-piece forged copper. The exterior can be chrome-plated or nickel-plated according to customer requirements.

Q4: Can I order a sample?

Yes. Samples can be provided for evaluation, with freight normally paid by the buyer.