Fast Flow Extinguishers: Difference between revisions

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{{Unreferenced|date=May 2016}}

Commonly referred to as "Fast Flow" or "High Performance" extinguishers. Available in {{convert|13.26|kg|lb|abbr=on}}., {{convert|209|kg|lb|abbr=on}}., and {{convert|3014|kg|lb|abbr=on|sigfig=1}}. capacities and contain [[ABC Dry Chemical]], [[Purple-K]], or [[sodium bicarbonate]]. They are currently manufactured by [[Ansul]] in cartridge-operated form, along with [[Amerex]], Badger, and [[Badger]] inBuckeye stored pressure design.

== UL rating differences for "Fast Flow" ==

These extinguishers have a higher dry chemical flow rate then conventional extinguishers. In other words, a fast flow extinguisher expels a higher volume of agent in less time than a standard compliance flow extinguisher. As a result, fast flow extinguishers have lower [[UL (safety organization)|UL]] class A&B ratings than compliance flow extinguishers (the class B numerical rating is the approximate square feet of burning fuel a [[novice]] operator could expect to extinguish). UL Class B tests are conducted on fuel in depth fires in what is known as a burn pan. Burn pans come in various

sizes (square feet) in relation to what UL rating an extinguisher will receive for successfully extinguishing it. The larger the burn pan fire, the larger the rating and the longer the extinguisher must discharge to be able to handle the larger volume of fire before running out. For a given size extinguisher the resulting effect is a lower flow rate, resulting in a higher UL rating.