Engineered by Ningbo Kaituo Valve Co., Ltd. a high-tech enterprise with decades of specialized precision forging experience the 6-12Kg Fire Extinguisher Valve serves as a core safety control component for large-capacity fire suppression systems. Sourced directly from our state-of-the-art manufacturing facility at competitive pricing, this heavy-duty valve delivers smooth agent discharge, reliable pressure relief, and exceptional structural stability under extreme emergency conditions.
| Item | Specification |
|---|---|
| Material | Copper |
| Surface treatment | According to customer requirements (chrome/nickel plated) |
| Inlet thread | M30X1.5 |
| Outlet thread | M14X1.25/G1/4 |
| Gauge thread | M10X1-12.5/NPT1/8 |
| Dip tube pipe thread | M16X1.5/M16X1 |
| Valve with safety pressure relief device | (24±2BAR) |
M30×1.5 is a parallel metric thread and does not seal on the thread flanks. The joint depends on a gasket or sealing ring at the cylinder neck. Assembly guidance for this valve class commonly specifies threading the valve on by hand until the sealing ring just contacts the cylinder opening, then applying a wrench through a further arc of approximately one-eighth to one-quarter turn. A separate technical bulletin for an M30×1.5 dry powder valve lists a tightening torque of 50–60 Nm. The cylinder manufacturer’s assembly instruction remains the controlling value for the specific neck design.
The sealing arrangement inside a stored-pressure dry powder valve determines how long the nitrogen propellant stays in the cylinder. NBR O-rings paired with a PTFE stem seal keep the propellant from slowly passing the stem over years of storage. Single NBR-only seals without a PTFE stem seal tend to lose elasticity sooner, shortening the interval before a leak develops. For a valve supplied with an integrated safety device, the same inspection that confirms the relief passage is clear should confirm that the stem area shows no sign of slow leakage.
Stored-pressure dry powder extinguishers that follow a 12-year hydrostatic test schedule commonly receive a full discharge, internal examination, and valve function check at the six-year mark. At that point the discharge valve and pressure gauge are checked in operation, not only visually. The valve is not necessarily replaced at six years, but findings such as a seat that does not seal, powder caked in the outlet passage, or a relief device that has previously vented and not reseated belong to that intervention.
Smooth, Intuitive Operation Under Stress: This 6-12Kg Fire Extinguisher Valve Designed with an ergonomic discharge handle and calibrated lever ratio, the valve allows quick, effortless activation during fire emergencies reducing critical reaction times when every second counts.
Universal Fitting & Retrofit Compatibility: Featuring the M30×1.5 cylinder inlet thread and precise nozzle connections, our 6-12kg valves fit onto compatible portable dry powder fire extinguishers, streamlining initial assembly and field replacements.
Dedicated Industry Manufacturing Crafts: Utilizing multi-station automatic forging and high-precision CNC machining, each valve body boasts high structural density, eliminating internal porosity and micro-cracks.
Specialized Structural Design: Engineered with optimized internal flow channels to minimize turbulence and pressure loss during rapid discharge. The anti-burst safety relief valve mechanism prevents accidental pressure spikes during high-temperature storage.
Decades of R&D Innovation: Backed by Ningbo Kaituo’s deep engineering heritage, our specialized technical team continually refines valve aerodynamics
International & National Standard Compliance: Fully compliant with relevant national fire safety specifications (GB standards) as well as international quality metrics (such as ISO 9001 quality management benchmarks and CE / EN3 compatibility guidelines).
High-Tech Enterprise Credibility: As an officially recognized high-tech manufacturing enterprise, Ningbo Kaituo Valve combines state-of-the-art production technology with authoritative industry qualifications.
All-Weather & Heavy-Duty Protection: Whether deployed in high-humidity coastal areas, freezing outdoor environments, or high-temperature industrial workshops, our advanced anti-corrosion plating preserves structural and mechanical integrity over time.
Versatile Commercial Applications: Ideal for commercial buildings, manufacturing plants, logistics hubs, maritime vessels, and public infrastructure projects requiring reliable 6-12kg portable fire extinguishers.
A1: You can reach us through the following channels:
Official Website: www.ankefire.com
Email: ivy@ankefire.com
Phone: 0574-62010119 / 0574-62010998
Office Address: SHengye Building 509, No.158 Tai'an Middle Road, Yinzhou District, Ningbo, Zhejiang, China
Factory Address: Huilong Village, Huangjiabu Town, YuyaoCity, Zhejiang Province, China.
A2: The fire extinguisher valve is the core component that controls the discharge of extinguishing agent. Its working principle is as follows: In the non-operating state, the valve maintains absolute airtightness to prevent propellant gas leakage. When the operating handle is pressed down, the valve stem moves downward, opening the valve passage, and internal pressure drives the extinguishing agent out through the nozzle or hose. Upon releasing the handle, the internal spring system automatically resets the valve stem, and the valve closes again, stopping agent discharge—this design allows intermittent operation, conserving extinguishing agent. The valve stem is the most critical component and the most frequently replaced part during maintenance, as its reliability directly determines whether the extinguisher will function properly in a fire emergency.
A3: Kaituo Valve offers multiple material choices to suit different application scenarios and customer requirements:
Brass (HPb59-1 Lead Brass): The classic valve material, forged for excellent corrosion resistance and mechanical strength, suitable for most conventional fire extinguisher applications.
Aluminum Alloy (AL6061): Aluminum valves offer moderate strength, good formability, corrosion resistance, and machinability, with the added benefit of lighter weight for improved portability and handling. Some aluminum valves can be chrome or nickel plated for enhanced aesthetics and durability.
Stainless Steel: For highly corrosive environments or specialized applications, stainless steel valves provide superior corrosion resistance and durability, maintaining stable performance under high temperature and pressure conditions to extend fire extinguisher service life.
A4: Assembly guidance for this valve class commonly specifies threading the valve on by hand until the sealing ring just contacts the cylinder opening, then tightening through a further arc of approximately one-eighth to one-quarter turn with a wrench. A technical bulletin for a comparable M30×1.5 dry powder valve lists 50–60 Nm. The cylinder manufacturer’s specification is the controlling value.
A5: EN 3-7 dry powder extinguishers in the 6–12 kg range commonly list a working pressure of 14 bar, a cylinder test pressure of 27 bar, and a safety valve setting between 20 and 26 bar. A 24 ± 2 bar setting falls inside that band and below the test pressure, which is the intended relationship. It should not be transferred to a cylinder with a different test pressure without confirming that the relief still occurs before the cylinder approaches its test value.
Address
Factory: Huilong Village, Huangjiabu Town, Yuyao City, Zhejiang Province, China
Branch Office: Hengye Building 509, No.158 Tai'an Middle Road, Yinzhou District, Ningbo, Zhejiang, China
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