Fire Sprinkler System K 80 FM Approved
The fire sprinkler is the core component of the automatic sprinkler system, which starts by itself (closed sprinkler) through a heat-sensitive element at a predetermined temperature, or starts by a control device (open sprinkler), and sprays water flow in the designed shape to extinguish the fire.
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Fire Sprinkler System K 80 FM Approved
What is Fire Sprinkler System K 80 FM Approved
FM Approvals is the world 's leading industrial product safety certification body, and its certification standards are adopted by more than 80 countries. The standard requirements for the FM 2000 series of fire sprinkler heads include:
Hydraulic performance: It is necessary to pass the flow coefficient (K-factor) test to ensure that the design coverage range is achieved under the pressure of 0.14-0.42MPa (for example, if K=80, the nozzle needs to meet the protection area of 12㎡).
Thermal response test: The glass ball nozzle needs to pass the standard temperature rise curve activation test under the condition of RTI≤50(m·s)^0.5
Mechanical strength: The injection component needs to withstand a static water pressure of 3.45MPa and 200,000 mechanical vibration cycle tests
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Material innovation
The FM-certified nozzle adopts a combination of copper alloy main body and PTFE sealing gasket, and its corrosion resistance grade reaches 1000 hours of ASTM B117 salt spray test. Some models use titanium alloy frames, reducing weight by 30% while maintaining impact resistance.
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The third-generation FM-certified nozzles integrate dual sensing modules of temperature and smoke. For example, the Tyco TY-FRB series can be linked with the fire control host through wireless signals, and the response delay is shortened to one-third of that of traditional products.
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Environmental adaptability
It complies with the FM 7-49 environmental protection standard, lead-containing solder is prohibited, and the heavy metal content of all coatings is 50% lower than the limit of the EU RoHS 2.0.
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