AV-1 type wet alarm check valve DN65 ~ DN200 ductile iron manhole covers and hand seat for the bronze, DN65 valve, stainless steel valve, other valves valve ductile iron, Guangzhou fm certification Fire cocks, All valves are made of EPDM for valve lining. Anyuan Hubei Chong Mechanical and Electrical Equipment Co., Ltd. is engaged in agents, sales of Tyco Fire products specialist DV-5 Diaphragm type deluge valve and deluge system DN40 ~ DN200 1.72 Mpa external reset, vertical or horizontal mounting DV- 5 Deluge Valve is a diaphragm-type structure, Hunan fm certified fire valves, valve size DN40-DN200, can be mounted vertically or horizontally. Automatic control valve used to supply water systems and other fire protection systems - in the deluge system, pre-action system, foam. Matching the appropriate valve piping components in the system operation, Chongqing fm certified fire valve, deluge valve to provide a fire alarm signal. RC-1 RC-1 type delay-Delay is installed in the water pressure fluctuations (such as a public water supply system) wet system, prevent the water system pressure fluctuations caused false alarms. When the nozzle action, fm certification Fire cocks, stable continuous flow of water into the sprinkler system pipe network, wet alarm valve plate open, the water flows from the throttle valve alarm port inlet orifice assembly (pore size 5.6mm), part of the water from throttle assembly outlet orifice (aperture 3.2mm) out of the rest of the water injection to the delay chamber. After the delay cavity filled, out of the water so that the water alarm and / or water pressure alarm switch action, as long as the valve plate open, the alarm will continue until the valve plate is closed. Chongqing fm certification Fire cocks, a Anyuan electromechanical, fm certification 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.