The present invention regards a method and system for securing a discharge valve to a water line of a fire suppression system with multiple t-connections. An image at a time, which has been imaged by moving an imaging section, is taken into a memory and a feature point extracting section, where feature points of the image are extracted, and an image at a start time of the subsequent frame is taken in the memory and the feature point extracting section. It has a first logic device which is turned ON by a reference voltage, and a second logic device is turned ON by a comparator input voltage. The chemical agent of the present invention may be in the form of a purified compound, mixture of compounds, a precursor form of one or more of the compounds capable of chemical transformation into a therapeutically active agent or in the form of a chemical fraction, sub-fraction, preparation or extract of the plant.