Abstract: The present invention relates to a water spray valve set for a nozzle pipe system of a fire-extinguishing installation, having a water spray valve which has a fluid inlet for connection to a water supply, a fluid outlet for connection to the nozzle pipe system, and a closing body arranged between fluid inlet and fluid outlet, wherein the closing body is movable back and forth between a shut-off position and an opened-up position, wherein, in the shut-off position, the fluid inlet and fluid outlet are separated from one another and, in an opened-up position, said fluid inlet and fluid outlet are fluidically connected to one another, having a control line which is connected to a control pressure supply, and having at least one first control valve for controlling the control pressure in the control line, wherein the control line is operatively connected to the closing body such that the closing body is held in the shut-off position, or is in an opened-up position, in a manner dependent on an actuation of the con

Abstract: The present invention relates to a water spray valve set for a nozzle pipe system of a fire-extinguishing installation, having a water spray valve which has a fluid inlet for connection to a water supply, a fluid outlet for connection to the nozzle pipe system, and a closing body arranged between fluid inlet and fluid outlet, wherein the closing body is movable back and forth between a shut-off position and an opened-up position, wherein, in the shut-off position, the fluid inlet and fluid outlet are separated from one another and, in an opened-up position, said fluid inlet and fluid outlet are fluidically connected to one another, having a control line which is connected to a control pressure supply, and having at least one first control valve for controlling the control pressure in the control line, wherein the control line is operatively connected to the closing body such that the closing body is held in the shut-off position, or is in an opened-up position, in a manner dependent on an actuation of the con

Abstract: A preaction dry pipe alarm valve (1) is provided for a sprinkler pipework (24) and sprinklers with a fire detection and extinguishing control panel (26). A water supply (38 and an air feed (37) are selectively in communication with the sprinkler pipework. A pilot control chamber (19) of the preaction dry pipe alarm valve (1) is depressurized in case of a fault message from the fire detection and extinguishing control panel (26). When the pilot control chamber (19) is depressurized and, in the case of a decreasing pressure in the sprinkler pipework (24), a quick opener (40) opens the valve head (2) of the preaction dry pipe alarm valve (1), so that extinguishing water can flow into the dry pipework (24). The system allows very short flooding times for the sprinkler pipework with no additional rapid vents installed in the pipework.

Abstract: A preaction dry pipe alarm valve (1) for a sprinkler pipework (24) with sprinklers with a fire detection and extinguishing control panel (26), a water supply (38), valves, the air feed (37), wherein the pilot control chamber (19) of the preaction dry pipe alarm valve (1) is depressurized in case of a fault message from the fire detection and extinguishing control panel (26), wherein a quick opener (40) which is in connection with the preaction dry pipe alarm valve (1), when the pilot control chamber (19) is depressurized and, in the case of a decreasing pressure in the sprinkler pipework (24), opens the valve head (2) of the preaction dry pipe alarm valve (1), so that extinguishing water can flow into the dry pipework (24). The system requires no additional rapid vents need to be installed in the pipework, which allows achieving very short flooding times for the sprinkler pipework.