Abstract: A mixing chamber formed in a chassis outfitted with separate inlet channels for conveying pressurized liquid phase and gaseous phase and an outlet channel linking the mixing chamber with a spray nozzle via a flow tube. A separate cylindrical packing chamber is formed in the chassis, within which packing chamber a rotor with vanes is set, the vanes of which rotor intermittently close the inlet channels of the two phases formed in separate sectors of said packing chamber as demarcated by the rotor vanes, wherein the gaseous phase inlet channel is closed alternately with at least one liquid phase inlet channel conveying liquid phase into the mixing chamber via open inter-vane channels, wherein also the sector of the packing chamber containing the gaseous phase inlet channel is separated from the mixing chamber by a continuous section of a partition that closes off the rotor's inter-vane channels within this sector.

Abstract: A mixing chamber formed in a chassis outfitted with separate inlet channels for conveying pressurized liquid phase and gaseous phase and an outlet channel linking the mixing chamber with a spray nozzle via a flow tube. A separate cylindrical packing chamber is formed in the chassis, within which packing chamber a rotor with vanes is set, the vanes of which rotor intermittently close the inlet channels of the two phases formed in separate sectors of said packing chamber as demarcated by the rotor vanes, wherein the gaseous phase inlet channel is closed alternately with at least one liquid phase inlet channel conveying liquid phase into the mixing chamber via open inter-vane channels, wherein also the sector of the packing chamber containing the gaseous phase inlet channel is separated from the mixing chamber by a continuous section of a partition that closes off the rotor's inter-vane channels within this sector.

Abstract: The fire extinguishing device is equipped with double-flow extinguishing head including side and central header, water pump /P/ connected to an extinguishing liquid source, particularly to water tank /W1/, auxiliary tank /W2/ including the proportioning system, particularly for foaming agent, connected to the water pump /P/ circuit, compressor /S/, and a dual-line fire-hose whose water-line is connected to the side header and delivery side of the water pump /P/ and the gas-line is connected to the central header and the compressor /S/. The water pump /P/ is connected to hose water-line through two-way shut-off valve /Z4/, whose second pass is connected, by connecting conduit, to the fire-hose gas-line through the first non-return valve /ZZ1/ and foam mixer /M/. The foam mixer /M/ and gas-line are connected to the circuit of compressor /S/ through shut-off valves /Z5, Z6/.