water curtain(Water curtain nozzle: A nozzle designed to throw a fan of water droplets to form a "curtain" in an attempt to reduce the risk of radiated heat igniting a nearby exposure. wiki Alexander Demidov)
water spray system(NFPA 15 Standard for Water Spray Fixed Systems for Fire Protection (2022 Edition): An automatic or manually actuated fixed pipe system connected to a water supply and equipped with water spray nozzles designed to provide a specific water discharge and distribution over the protected surfaces and areanfpa.orgcoopernord)
