AV-1 type wet alarm valve type DN65 ~ DN200AV-1 Alarm Check Valve is separated from the seat ring, fm certification fire valve Which is good, rubber lining valve, water flow alarm check valve. For wet automatic sprinkler system can be installed vertical or horizontal. When the system flows into the equivalent of a multi-nozzle steady flow only, you can start the electric and / or hydraulic automatic warning devices. Body ductile iron manhole covers and hand seat for the bronze, DN65 valves valve of stainless steel, other valves valve ductile iron, all valves are made of EPDM for valve lining. AV-1 type alarm valve piping accessories include: system pressure gauge, bypass valve, the main drain valve and the alarm test valve. The bypass valve allows the pressure to produce a small amount of the increase and the slow flow of water into the system-side line without causing the valve to open, in order to reduce the possibility of false alarms. AV-1-300 type rated working pressure of 2.07Mpa. DV-5 electric / electrical double interlock pre-action system DN40 ~ DN200 electric / electrical double interlock pre-action system consists of a pre-action valve (DV-5 Deluge valve and check valve composition) and the appropriate piping, fire detection systems, air compressor, automatic pressure maintenance device, closed nozzle, pipe networks and water supply control valve. Electric / electrical double interlock pre-action system designed for applications requiring maximum water level to prevent systematic errors places, such as cold storage. It can also be used for water damage sensitive political and economic spaces, such as computer rooms, storage of valuables, heritage warehouses, libraries, archives, hotels, convention centers and other places. Electric / electrical double interlock pre-action system requires the installation of electrical fire detection systems, pre-action valve with a solenoid valve actuating means are electric start piping. The first electrical signal is an electrical detection systems or manual / electric emergency open valve means. The second electrical signal is a low-pressure warning system pipe network pressure switch, Qinghai fm certification Fire cocks, closed nozzle after operation, fm certification Fire cocks purchase, system pipe network pressure drop, low alarm pressure switch. When two independent signals are sent to the fire control box, the formal certification fm fire valves, fire control box issue 24VDC solenoid valve opening signal, pre-action pressure relief valve diaphragm chamber, pre-action valve is opened. If there is only a signal, fire control box only send an alarm signal, pre-action valve will not open. QRS Electronic Accelerator has the following characteristics: * dry pipe valves in four seconds or less action - depending on different combinations of pressure pipe network, pipe network volume, nozzle flow coefficient K values. * Built-in low pressure and high pressure alarm monitoring devices. * When tape backup battery, in order to ensure reliable operation of mains failure fm certification Fire cocks wholesale, create Anyuan electrical, Taiwan fm certified by the Hubei Chong Fire cocks Anyuan Electrical Equipment Co., Ltd. to provide. Hubei Chong Anyuan Electrical Equipment Co., Ltd. (www.hbcay119.com) (www.hbcay119.com) is a leader in Wuhan, fire protection equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Anyuan electromechanical leadership in creating the staff warmly welcome all inquiries negotiations to create create a better future for electromechanical Anyuan.