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High Pressure CO2​ Valve Assembly

-- Steady & Reliable Manufacturer --

Introduction: Containing Liquefied Carbon Dioxide Agent

The High Pressure CO2​ Valve Assembly is a specialized, extremely robust valve designed to safely contain Carbon Dioxide (CO2​), which is stored as a liquid at pressures up to 1800 psi (≈124 bar) at room temperature. Due to this extreme pressure, the valve is universally forged from high-strength brass or bronze, ensuring it can withstand the immense forces and thermal stress.

Unlike stored-pressure extinguishers, CO2​ units are self-expelling, meaning the agent's high vapor pressure acts as its own propellant. The valve assembly includes a robust handle, a heavy-duty brass stem and seal, and a critical Safety Burst Disk mechanism. This disk is mandatory to prevent cylinder rupture in case of overheating. When actuated, the valve releases a rapid blast of CO2​ gas and "snow" through a specialized horn nozzle.

CO2​ valves are subject to mandatory 5-year internal inspections and 12-year hydrostatic tests due to the high operating pressures regulated by DOT/TPED standards. (Approx. 570 words)

Advantage: Extreme Pressure Integrity, Safety Relief, and Clean Agent Use

  • Unmatched Strength: Forged brass construction provides the material integrity necessary to contain extreme internal CO2​ pressures safely.
  • Mandatory Safety: The inclusion of a highly calibrated burst disk provides a critical fail-safe against cylinder explosion due to accidental overheating.
  • Clean Discharge: Designed to work with the clean, non-residual CO2​ agent, essential for sensitive equipment protection.
  • Durable Seals: Utilizes robust seals (Viton/PTFE) capable of maintaining pressure integrity over many years of service life.
  • Thermal Resistance: Can withstand the rapid temperature drop and thermal shock that occurs when high-pressure CO2​ is rapidly discharged.
  • Code Compliance: Meets the stringent design and safety requirements of global transport and safety authorities (DOT/TPED).

Specification: Material, Pressure Rating, and Safety Device

Component FunctionSeals and Controls Release of 1800 psi Liquefied CO2​
MaterialForged Brass or Bronze (High-Strength Alloy)
Working PressureUp to 1800 psi at 70∘F
Safety FeatureMandatory Safety Burst Disk (Rupture Pressure≈2600 psi)
Cylinder ThreadSpecific High-Pressure Threads (e.g., CGA320)
Discharge ConnectionThreaded Port for High-Pressure Hose and Horn
Standard ComplianceDOT/TPED, UL 299/711, EN 3
SealsViton or PTFE (Teflon) Seals (Required for High Pressure)

Application in High-Risk/Sensitive Areas

Electrical Equipment Fires (Class C)

Used on energized equipment and sensitive electronics (e.g., server rooms) where a non-conductive, clean agent is required.

Flammable Liquid Fires (Class B)

Effective for smothering smaller surface fires involving liquid fuels without leaving residue.

Industrial Machinery

Used in areas with sensitive rotating equipment or machinery that could be damaged by powder or water.

Marine Engine Rooms

Ideal for protecting engine spaces where clean, non-corrosive suppression is critical.

Recharge and Hydrotesting

The valve is removed every 5 years for inspection and every 12 years for cylinder hydrotest.

Grow Your Bussiness With KAITUO

  • INNOVATION

    Professional R&D Team

    We have a professional R&D team of over 15 people who are able to provide innovative products and customized design services to our customers.

  • QUALITY

    Product quality assurance

    We adhere to quality as a lifeline for our business development, and strict quality management systems ISO and CE, as well as a variety of advanced quality testing equipment are our guarantees for product quality.

  • PRODUCTION CAPACITY

    Annual output exceeds 400,000

    Every month over 400,000 pcs of kinds of valves, including fire extinguisher valve, lpg valve, marine gas cylinder valve and so on.

  • SERVICE

    One-stop service

    We have complete design, and product development, testing and quality control are all carried out in the factory, which to a certain extent guarantees the high quality and performance of Kaituo fire equipment.

Payment & Shipping: Flexible Global Trade Solutions

We offer comprehensive and secure international trade terms tailored to our global clientele.

  • Accepted Payment Methods:

    Wire Transfer (T/T): Standard 30% deposit to confirm the order, 70% balance upon presentation of Bill of Lading (B/L) copy.

    Letter of Credit (L/C): Irrevocable L/C at sight for critical high-pressure components and forged assemblies.

  • Shipping Terms (Incoterms):

    FOB (Free On Board): Ningbo Port is our standard shipping hub.

    CIF/CFR: Available upon request; we manage shipping logistics to your designated port.

  • Packaging:

    Valves are individually protected, sealed with high-pressure thread caps, and secured in specialized foam trays to prevent movement.

Comprehensive Information Summary

Minimum Order Quantity (MOQ)5,000 Units (Forged Brass/Bronze)
Lead Time90-120 Days (Forging, CNC Machining, Plating, Burst Disk Calibration, DOT/TPED Certification)
PackagingIndividual Protection, Thread Caps, Specialized Foam Trays.
CertificationsDOT/TPED, UL 299/711, EN 3, ISO 9001.
Raw MaterialsForged Brass (HPb59-1), Bronze, Stainless Steel, Viton/PTFE Seals, Copper Burst Disk.
Customization OptionsThread Standard (CGA/BS/DIN), Burst Pressure Rating, Handle Design (Swing-Out/Fixed).

Professional Usage Tips

  1. Weight Check:

    Readiness is determined by weight check, not a gauge. Ensure the valve assembly is routinely weighed to confirm agent quantity.

  2. Burst Disk Integrity:

    Inspect the burst disk area for any damage or blockages; a compromised disk is a severe safety violation.

  3. Thread Lubrication:

    Use only specified, high-pressure compatible lubricants on the threads and seals to prevent leakage and ensure smooth operation.

  4. Handle Release:

    Train users that the CO2​ discharge is very violent; the handle must be squeezed and held firmly until the fire is out.

  5. Annual Inspection:

    The CO2​ valve and cylinder must be removed and internally inspected every 5 years (NFPA 10).

Get in Touch

ABOUT KAITUO
Ningbo Kaituo Valve Co., Ltd., also known as Ningbo Anke Fire Equipment Co., Ltd., is China High Pressure CO2​ Valve Assembly Manufacturers and Wholesale High Pressure CO2​ Valve Assembly Factory, specializing in the research and development, production and export of fire equipment. It owns the anke brand and a number of national high-tech patents.
Founded in 2001, our company mainly provides high-quality fire protection products for the international market, specializing in the production of various types of fire extinguisher accessories, marine gas cylinder valves, gas valves, etc. After years of hard work and continuous improvement of process reform, our products are exported to dozens of countries around the world and have won a good international reputation. All of our products have obtained the EU EN, CE certification in 2007.
Welcome all customers to call and visit us. Our company has a professional sales team to provide accurate services.
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FAQ

Readiness is determined by weight check, as CO2​ pressure varies too widely with temperature (unlike stored-pressure agents).

It is a non-reclosing device that vents pressure safely if the cylinder overheats, preventing a catastrophic explosion.

Yes, high-pressure CO2​ valves must be forged brass/bronze for safety and compliance due to the pressure requirements.

Internal inspection (valve removal and seal replacement) is required every 5 years for CO2​ units (NFPA 10).

The Minimum Order Quantity (MOQ) for high-pressure CO2​ forged valves is typically 5,000 units.

It is a standard thread specification set by the Compressed Gas Association for CO2​ cylinder valves in North America.

The entire contents are discharged, and the valve/disk must be replaced before the unit can be refilled.

Viton is a fluoroelastomer rubber known for its excellent chemical and high-pressure resistance, suitable for CO2​.

Larger handles provide the necessary leverage to overcome the extreme internal pressure and open the valve stem.

CO2​ is highly effective on Class B (flammable liquids) and Class C (electrical) fires.