Products Description
1. Quality material guarantee
Made of brass, it possesses excellent mechanical properties and corrosion resistance.
The metal has a high density and no sand holes or pores, ensuring the sealing reliability under high-pressure conditions.
Special heat treatment processes enhance material strength and extend service life.
2. Precision processing technology
Precision processing by CNC machine tools, with dimensional tolerance controlled within ±0.01mm
The threads are formed by rolling process, which enhances the connection strength and sealing performance.
The valve core and valve seat are precisely machined to match, ensuring zero leakage.
3. Safety Protection Design
Built-in adjustable safety valve, automatically releases pressure in case of overpressure
Double-sealing structure design (primary seal + backup seal)
Anti-misoperation safety device, preventing accidental opening
4. Professional performance
Designed specifically for CO2 fire extinguishing medium, it can withstand low temperatures down to -30℃
Quick opening and closing function, response time < 0.5 seconds
Low resistance design ensures rapid release of the fire extinguishing agent.
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Applicable fire extinguisher types
2kg/3kg portable CO2 fire extinguisher
5kg/7kg wheeled CO2 fire extinguisher
Fixed CO2 fire extinguishing system weighing over 10 kilograms
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Applicable locations
Data centers, server rooms
Power distribution facilities, substations
Laboratory, Precision Instrument Room
Industrial coating production line
Ship engine room, fuel depot
Product specification parameters
| Parameter Categories | Detailed Specifications |
| Material | Brass |
| Imported thread | PZ27.8x14 |
| Exported thread | NPT3/8x18 |
| Pressure gauge connection thread | None |
| Inlet pipe thread | M10x1 |
| Working pressure | 18 - 25 MPa |
| Applicable to | Carbon dioxide fire extinguisher |
| Safety valve | 20.55 - 22.5 MPa |
Installation and Usage Instructions
Installation steps
- Check that all components of the valve are in good condition and that the threads are undamaged.
- Wrap a PTFE tape around the threaded part (3 to 5 turns)
- Use a special wrench to screw the valve into the cylinder of the fire extinguisher (PZ27.8 thread)
- Install the immersion tube and tighten the M10×1 threaded connection
- Connect the NPT3/8 outlet pipeline (it is recommended to use pipe thread sealant)
- Carry out a 25 MPa pressure test, maintaining the pressure for 3 minutes without any leakage.
Usage Notes
- Regularly check the flexibility of valve operation (once every quarter)
- Carry out sealing performance tests every year
- Keep your hands dry during operation and avoid slippage.
- When releasing the fire extinguishing agent, stand in the upwind position.
- The safety valve needs to be calibrated once a year for its opening pressure.
Maintenance and upkeep
Daily maintenance
Conduct monthly visual inspections to ensure the integrity of the valve appearance.
Keep the valve clean to prevent dust from accumulating.
The moving parts are regularly lubricated with special grease.
Professional maintenance
A comprehensive inspection is conducted by a professional institution every three years.
Replace all the seals (it is recommended to use original factory parts)
Check the wear condition of the valve core. Replace it if necessary.
Frequently Asked Questions
Q: Why did you choose brass material instead of stainless steel?
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A: Brass has better processing performance and sealing properties, and is particularly suitable for the low-temperature environment of the CO2 fire suppression system. Moreover, it offers a more cost-effective solution.
Q: How is the pressure of the safety valve adjusted?
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A: The pressure of the safety valve needs to be adjusted by professional technicians using specialized tools. Users are not allowed to adjust it themselves as it may affect the safety performance.
Q: How long can it be used?
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A: Under normal use and maintenance conditions, its lifespan can reach 8 to 10 years. However, it is recommended to replace the seals every 3 years.
Q: How can one determine if a replacement is necessary?
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A: If there is any operation lag, abnormal pressure gauge readings, or visible leakage, the equipment should be immediately shut down and professional personnel should be contacted for inspection.
Q: Is it applicable to other gas fire suppression systems?
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A: This product is specifically designed for CO2. It is not recommended for use with other fire suppression agents as the sealing materials and structure may not be compatible.
Purchase Instructions
- Offer OEM/ODM services, with the option to customize the logo and packaging.
- Get discounts when purchasing in bulk
- Provide professional technical support
This product is a key component of the CO2 fire suppression system. It is recommended to be installed and used by professional fire equipment suppliers. Before purchasing, please confirm its compatibility with your existing fire extinguisher model. If you have any questions, please contact our technical support team.
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