Products Description
Core parameters
Material composition: 304 stainless steel (main body) + special rubber (sealing parts) + brass (pressure gauge interface)
Pressure parameters:
- Design working pressure: 2.2 - 2.4 MPa
- Blasting pressure: ≥ 6.0 MPa
- Safety valve set pressure: 2.8 MPa (Standard configuration does not include a safety valve. It can be added upon request.)
Temperature range: -30℃ to +150℃
Service life: ≥ 5000 opening and closing cycles
Professional threaded interface
| Interface type | Thread specification | Function description | Sealing method |
| Import end | M45x1.5 (outer) | Connecting to the fire extinguisher cylinder | Conical surface sealing |
| Outlet end | M14x1.5 (inner) | Connects to the spray hose | O-ring seal |
| Pressure gauge interface | M10x1 - 12.5 | Install the pressure gauge | Flat seal |
| Intrusion pipe interface | M16x1.5 | Install suction tube | Conical thread seal |
Product Advantages
Outstanding Material Properties
High corrosion resistance: The 304 stainless steel material can resist chemical corrosion from fire extinguishing agents and environmental oxidation.
Structural integrity: Integral molding valve body design, without any weak points prone to failure due to welding.
High-temperature stability: The all-metal structure maintains stable performance in extreme environments.
Precision engineering design
Fluid optimization design: The flow channel has been optimized by CFD, with pressure drop < 0.15 MPa at maximum flow rate.
Double-sealing system: Main seal (PTFE) + Auxiliary seal (NBR) ensures zero leakage
User-friendly operation: The ergonomic handwheel design allows for easy operation even with gloves on.
Safety and reliability guarantee
Overpressure protection: Optional adjustable safety valve (adjustable range from 2.5 to 3.0 MPa)
Visual indication: Integrated pressure gauge interface, real-time monitoring of system pressure
Prevent Maloperation: The rotating locking mechanism prevents accidental opening.
Application scenario
ABC dry powder fire extinguisher
Suitable for 3-10kg portable fire extinguishers
Water-based fire extinguishing systems
Foam fire extinguishers, fine water mist systems
Special environments
Corrosive conditions in ships, oil fields, chemical plants, etc.
Mobile equipment
Engineering vehicles, special equipment, and related fire protection systems for special equipment.
Quality Control
Production process control:
- CNC processing accuracy: ±0.01mm
- 100% air pressure test (maintain pressure at 3.0 MPa for 3 minutes)
- Sampling blasting test (≥ 6.0 MPa)
Inspection items upon leaving the factory:
- Sealing test
- Operation torque test (3 - 6 N·m)
- Visual inspection (no burrs, no scratches)
Technical Comparison:
| Parameters | This product | Ordinary brass valve | Engineering plastic valve |
| Corrosion resistance | ★★★★★ | ★★★☆ | ★★☆ |
| Pressure-bearing capacity | 3.0 MPa | 2.5 MPa | 1.6 MPa |
| Service life | 10 years + | 5 - 8 years | 3 - 5 years |
| Environmental adaptability | -30 to 150℃ | -10 to 120℃ | 0 to 80℃ |
Check that all threaded connections are free from damage.
Apply the special sealing adhesive to the threaded part of the immersion tube.
Use a 45mm open-end wrench to fix the valve body.
Tighten each interface according to the recommended torque:
Bottle interface: 60 - 70 N·m
Pipe fitting: 25 - 30 N·m
Pressure gauge: 15 - 20 N·m
Carry out a 1.5 times work pressure test.
Check that there are no air bubbles leaking at all the connections.
Maintenance and upkeep
Daily inspection
Monthly inspection of the operational mechanism's flexibility
Check the condition of the seals every quarter.
Regular maintenance
The sealing parts are replaced once a year (a spare set is provided with the valve)
Conduct stress tests every two years
Notes
Avoid using corrosive cleaners
Keep the valve closed during storage
Q&A
Q: Can it be used with carbon dioxide fire extinguishers?
A: The working pressure designed for this valve is suitable for dry powder/water-based systems. For CO2 systems, a dedicated high-pressure valve is required.
Q: Can the interface specifications be customized?
A: We support non-standard customization. For specific details, please contact us.
Q: How can one determine if a seal needs to be replaced?
A: It should be replaced when the operating torque exceeds 8N·m or when a small amount of leakage is detected.
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