Class K fire extinguishers are specifically designed to combat fires caused by cooking oils and fats commonly found in commercial kitchens. To ensure their effectiveness, these extinguishers require regular refilling. Refilling a Class K fire extinguisher involves several steps to ensure its readiness in case of an emergency. First, the extinguisher must be inspected for any physical damage or signs of wear and tear. Next, the pressure gauge should be checked to ensure it is within the recommended range. If necessary, the extinguisher can then be emptied of its existing contents before being refilled with the appropriate Class K fire extinguishing agent. Lastly, the extinguisher should be properly recharged and pressurized before being returned to service. Regular refilling of Class K fire extinguishers is essential in order to maintain their functionality and effectiveness in handling kitchen fires.