SYSTEM FOR THE PRESSURE REDUCING VALVE FOR FIRE FIGHTING

摘要

PURPOSE: A fire depressurization valve system is provided to easily grasp defect cause, to simplify installation and to enhance reliability of driving. CONSTITUTION: A fire depressurization valve system comprises a primary side fluid path; a secondary side fluid path; a main valve (112) which controls opening between the primary side fluid path and the secondary side fluid path; a pilot valve (114) which drives the main valve; butterfly valves which are respectively installed in the primary side fluid path and the secondary side fluid path; a tamper switch (155) which senses opening and closing of each butterfly valve; a limit switch (60) which senses opening and closing of the main valve; an inflow water pressure transmitter (70) which is installed in the primary side fluid path; an outflow water pressure transmitter (80) installed in the secondary side fluid path; an outflow measuring device(85); and a central processing unit (90).