How Alarm Gong Works

Model wm water motor gong.

How alarm gong works. Water motor gongs shall be constructed and installed to provide a local audible alarm upon activation of a water based sprinkler system and rated for a working pressure of 175 psi. An alarm valve prevents a reverse flow of water from the installation into the fire pump room but in case a fire sprinkler is activated opened due to fire the alarm valve will open and permit. The water staying pressurized in the pipes is released over the fire area after the sprinkler is activated. The manufacturer s works for repair.

Series 760 firelock nxt water motor alarm. When the sprinkler system operates the sprinkler alarm sends a continuous rining bell signal inorder to alert all personell of a possible fire episode. Task providing a clocking mechanism or alarm gong for a portable watch. A 6 9 3 1 audible alarms are normally located on the outside of the building.

Red enamel is standard finish for the gong shell. An alarm check valve can be activated or opened in one of two basic ways. Either manually when a person activates a water gong or electronically. A gong is an east and southeast asian musical percussion instrument that takes the form of a flat circular metal disc which is hit with a mallet.

Water motor gong. Scientific and archaeological research has established that burma china java and annam were the four main gong manufacturing centres of the. 6 9 3 1 an alarm unit shall include a listed mechanical alarm horn or siren or a listed electric gong bell speaker horn or siren. If sprinkler alarm bell is not functioning or the impeller is jammed please follow the maintenance guideline provided in the catalogue for sprinkler alarm bell.

For wall thicknesses 2 13 51 330 mm. The term gong originated in java. If pressure alarm switch gives a steady signal but sprinkler alarm generates an intermittent alarm check sprinkler alarm bell shaft. The material from which the gong is made has a rich root ratio that is less than 3300 m s in the ratio of the modulus of elasticity of the material divided by the volume mass of the selected.

The wet alarm valve is designed for applications where the water is unlikely to freeze. The gong s origin is likely china s western regions sixth century. Mechanical water powered device signaling the flow of water in an automatic sprinkler system. Solution the gong is configured to generate a sound in the audible frequency range when struck by at least one hammer.