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https://www.hunker.com/13418788/what-is-the-k-factor-on-a-sprinkler-head
Fire sprinkler systems are "instant firefighters," according to the Residential Fire Safety Institute. They are on duty 24 hours every day to extinguish fires by using sprinkler heads, or valves, that release water when they sense heat. To calculate sufficient flow that is needed from a sprinkler head to extinguish a fire, engineers use a mathematical equation to determine the k-factor, or …
https://www.pipeflow.com/software-technical-support/pipe-flow-expert-sprinkler-k-factors
The K factor for sprinklers is NOT the same as a fitting K factor (which is used with a velocity2 element to calculate head loss). Typical sprinkler Discharge Coefficients might be: K=5.6 (where the units are in US gpm/psi 0.5) This equates to a metric K of 80.6 (units are in (l/min)/bar 0.5) or K=8.0 (where the units are in US gpm/psi 0.5)
https://www.meyerfire.com/blog/compare-flow-of-k-factors-with-new-calculator
The k-factor for a fire sprinkler is the discharge coefficient, or in normal human terms just relates to the amount of water that is permitted through the sprinkler. The k-factor is dependent upon the orifice diameter of the sprinkler - a low k-factor (such as K2.8) restricts the flow of water, while a larger k-factor (such as K22.4, K25.2, or K28.0) permit much more water …
https://canutesoft.com/Online-hydraulic-calculators/k-factor-online-calculator-for-fire-sprinkler-water-mist.html
Online K-factor calculator for fire sprinklers. To find the flow from a sprinkler head or a water mist nozzle, we need to use the K-factor formula. This is the starting point for most water-based fire protection design and calculations. We can use this formula for any device for which we have a K-factor, and that can be a sprinkler, nozzle ...
https://www.eng-tips.com/viewthread.cfm?qid=299852
Generally the NFPA 13 "K factor" for sprinklers is K=5.6. Generally sprinklers are 1/2" (~DN15) connection size. The K factor is determined experimentally, but NFPA 13 currently mandates the use of a nominal K factor (e.g. 5.6) rather than the actual K factor. Makes things less confusing I think. It is used in the following formula: Q = K * (P)^0.5 Q=gpm through the …
http://www.tycobuilding.com/en/emea/SiteAssets/Datasheets%20Product%20Brochures/Sprinklers/TFP344_03_2007.pdf
The 11.2 K-factor, ELO-231FRB Up-right and Pendent Sprinklers were subjected to full scale, high-piled stor-age, fire tests toqualify their use inlieu of 5.6 or 8.0 K-factor standard spray sprinklers for the protection of high-piled storage. Higher flow rates can be achieved at much lower pressures with the 11.2 K-factor, ELO-231FRB Sprinklers —
https://pdhonline.com/courses/m110a/Module3_Part2.pdf
The k-factor for different sprinkler heads may range from k= 5.6 (standard ½” orifice) to k=14.0 for ESFR sprinklers. The flow from a sprinkler may be determined from the following formula: Q = k √p, where Q is in gallons per minute (gpm), k is taken from manufacturer’s literature and p is the flow pressure in pounds per square inch (psig). For a typical sprinkler head with a k=5.6, and a …
https://www.vikinggroupinc.com/sites/default/files/documents/081612.pdf
Thread size: 1” NPT for Sprinkler 18493, 25 mm BSPT for Sprinkler 18494 Nominal K-Factor: 22.4 U.S. (320 metric*) * Metric K-factor measurement shown is in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0. Overall Length: 3-3/16” (81 mm) Deflector Diameter: 1-3/4” (44.5 mm)
https://www.canutesoft.com/Hydraulic-calculation-for-fire-protection-engineers/k-factor-formula.html
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https://www.hdfire.com/pdf/sprinklers/HD-287-Sprinkler-K-8-Upright-Pendent-&-Recessed.pdf
SPRINKLER - UPRIGHT, PENDENT AND RECESSED PENDENT (K FACTOR - 8) TECHNICAL DATA Style Upright, Pendent and Recessed Pendent Temperature Standard Response - 5mm Response glass bulb Quick Response - 3mm glass bulb Coverage Standard Coverage K-Factor 8.0 US (115 metric) Nominal Thread Size 3/4” NPT Max. Working 175 PSI (12 Bar) Pressure
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