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Brass Valve Body Extinguisher Parts

-- Steady & Reliable Manufacturer --

Introduction: Foundation of Extinguisher Control Mechanism

The Brass Valve Body Extinguisher Parts form the main housing unit that connects the extinguisher cylinder to the discharge components (hose, gauge, handle). Forged or cast from high-grade brass, these valve bodies are preferred for high-pressure agents (CO2​) and corrosive agents (wet chemical, foam) due to their superior strength, durability, and corrosion resistance compared to aluminum alternatives.

The valve body serves as the core of the extinguisher's operating system, containing the critical internal components: the valve stem, spring, O-rings, and the siphon tube connection port. Its primary function is to securely contain the pressurized agent until the safety pin is pulled and the operating lever is compressed, opening the internal valve stem.

These components are required to be disassembled, inspected, and have all seals replaced during the periodic internal examination mandated by NFPA 10 to ensure continued operational readiness and system integrity. (Approx. 580 words)

Advantage: Durability, High Pressure Capability, and Chemical Inertness

  • Extreme Strength: Forged brass offers exceptional tensile strength, making it ideal for containing high-pressure gases like CO2​ and Nitrogen.
  • Corrosion Resistance: Highly resistant to degradation from both atmospheric elements and specific chemical extinguishing agents.
  • Longevity: Brass valves are designed to last for the entire 20-year lifespan of the cylinder, tolerating multiple hydrostatic tests and recharge cycles.
  • Precision Machining: Brass is easily CNC machined to tight tolerances, ensuring a perfect, leak-free seal with the cylinder neck and other components.
  • Code Acceptance: Universally recognized and accepted by all major fire safety regulatory bodies (UL, FM, BSI, EN).
  • Thermal Stability: Maintains structural integrity across a wide range of operating temperatures without deformation.

Specification: Material Grade, Threading, and Pressure Rating

Component FunctionPrimary Housing for Valve Mechanism and System Connection
MaterialForged Brass (e.g., HPb59-1 or C37700)
Pressure RatingUp to 3000 psi (For CO2​ Applications)
Cylinder ThreadM30×1.5, M18×1.5 (Metric), or NPT (US)
Port IntegrationsGauge, Hose/Horn, Siphon Tube, Safety Burst Disk (Optional)
Corrosion ResistanceExcellent (Superior to Aluminum)
Standard ComplianceUL 299/711 (Valve Performance), EN 3
Key FeatureHigh Yield Strength and Durability for Recharge Cycles

Application in High-Hazard Environments

CO2​ Extinguishers

Mandatory for high-pressure liquid storage (up to 1800 psi) where cylinder integrity is paramount.

Wet Chemical (Class K) Units

Used due to brass's superior chemical resistance to the alkaline potassium acetate agent.

Marine and Offshore Use

Preferred in saltwater environments for maximum resistance against chloride corrosion.

High Frequency Use

Chosen for industrial and commercial units subjected to frequent inspections and service/recharge cycles.

Manufacturing and Assembly

Supplied to extinguisher assemblers for use with certified DOT/TPED cylinders.

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 large-volume brass forging and complex CNC machining orders.

  • 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, typically sealed with plastic caps on the threads, and secured in sturdy master cartons to prevent transit damage.

Comprehensive Information Summary

Minimum Order Quantity (MOQ)10,000 Units (Standard Dry Chem), 5,000 Units (CO2​/Specialty)
Lead Time75-90 Days (Brass Forging, CNC Machining, Plating/Finishing, Pressure Testing)
PackagingIndividual Protection, Thread Caps, Secure Trays/Cartons.
CertificationsUL 299/711, EN 3, DOT/TPED (Material Rating), ISO 9001.
Raw MaterialsForged Brass (HPb59-1), Stainless Steel (Stem), EPDM/Viton O-rings.
Customization OptionsThread Size (Cylinder/Hose), Pressure Relief Feature Integration, Handle Pivot Design.

Professional Usage Tips

  1. Torque Specification:

    Always adhere strictly to the manufacturer's specified torque rating when screwing the valve body onto the cylinder neck to ensure seal integrity.

  2. Thread Condition:

    Inspect the cylinder neck and valve threads for any nicks, cross-threading, or damage before assembly; damage compromises safety.

  3. Correct Sealant:

    Use the correct thread sealant or lubricant (e.g., specified Teflon tape) on the siphon tube and gauge ports to prevent slow leakage.

  4. Six-Year Inspection:

    NFPA 10 mandates that the valve be removed, disassembled, and internally inspected every 6 years for dry chemical units.

  5. Recycled Metal Check:

    Verify the brass supplier provides a certificate of analysis (COA) ensuring the brass grade meets the specified pressure ratings.

Get in Touch

ABOUT KAITUO
Ningbo Kaituo Valve Co., Ltd., also known as Ningbo Anke Fire Equipment Co., Ltd., is China Brass Valve Body Extinguisher Parts Manufacturers and Wholesale Brass Valve Body Extinguisher Parts 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

Brass offers higher strength, superior corrosion resistance, and is mandatory for extremely high-pressure agents like CO2​.

The cylinder (and valve assembly) must be hydrotested every 12 years for stored-pressure water/foam/wet chemical units.

Brass formed under extreme pressure rather than casting, resulting in a denser, stronger component free of internal defects.

The valve stem, spring, O-rings, washers, and sometimes a safety burst disk are integral components.

The Minimum Order Quantity (MOQ) for high-volume standard brass valves is typically 10,000 units.

Yes, NFPA 10 mandates disassembly and replacement of perishable seals every 6 or 12 years depending on the agent.

A faulty body risks propellant leakage (causing pressure loss) or catastrophic cylinder failure under high pressure.

Common threads include M30×1.5 (Metric), M18×1.5, and various NPT (National Pipe Thread) sizes.

The body itself is rarely repaired; rather, the internal components (stem, O-rings) are replaced during service.

The burst disk is a safety feature designed to safely vent excessive pressure if the unit is exposed to extreme heat.