Alarm valve is a wet fire extinguishing system in the water supply control valve. It makes water flow in one direction and alarms at a certain flow rate. The working principle of the wet alarm valve is to rely on pipe network system to reduce or increase the water pressure on the valve. In the servo state, when the water supply pressure fluctuates slightly, the function of the bypass balance pipe is to balance the pressure of the valve flap above and below, and the pressure-bearing face of the valve flap is larger than the lower pressure bearing face, the valve flap will not open and a false alarm will occur. When there is fire and blasting causes the pipe network system side water pressure to drop, the pressure difference between the water supply side and the system side will open the valve flap to the open nozzle to continuously supply fire. Wet fire extinguishing system with wet alarm valve must be installed in a building with an ambient temperature of at least 4 ° C so as to prevent it from losing its fire protection function due to icing. The standard configuration of the wet alarm valve includes: pressure gauge, delayer, pressure switch, hydraulic alarm, and the necessary fittings and valves. Wet alarm valve between the alarm port and the delay between the control ball valve servo state must be kept fully open and locked, and the test alarm control valve must be closed. When a test alarm is required: Disassemble the locking device that controls the ball valve between the alarm port and the retarder and close it. At this point open the test alarm control valve can be alarm test. Immediately after the test will be two control valve restored to its original state. June 30, 2009
Precison Filter
The Replace Precision Fiter Element 2901200404 is a high-quality replacement fiter element designed to meet the demanding fitraion needs of a variety of industrial applications, Made from premum materials.this orecision flter element provides superior filtration performance and long service life, making it an ideal choice for industries that require consistent performance and reliability.
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