FIELD: fire safety equipment.SUBSTANCE: invention relates to firefighting equipment. Sprayer of the gas-water fire-extinguishing system contains a body and a spray device. Housing is designed as a central sleeve with an external hexagon and internal cylindrical surfaces. To one of the end sides is asymmetrically fastened by means of a lock nut a supply pipe, and to the other – a spraying element made in the form of a bushing. Socket is attached to the hub by means of arcs arranged along a conical surface, which is a part of the spherical surface bounded by the inner and outer hemispheres. At the spherical surface, from its outer side, at least three grooves are made, whose axes are located on the radial lines with respect to the hemisphere. Peripheral part of the hemisphere comprises at least three choke holes. Asymmetrically to the spraying element is located a blocking valve that is made in the form of a ball fixed by a spring, located inside the central sleeve, to a conical surface formed at the end of t