Wet or dry start to start the system by the nozzle boot system that provides water flow alarm fire alarm signal after the pre-action system pressure switch operation, fm authentication signal butterfly doors, so no need to design electrical fire detection system. Under normal circumstances, the detection elements of the system designer to select a single chain of pre-action fire system response speed faster than the automatic fire sprinklers. Inflation pressure pipe network only 0.69bar, Shandong fm authentication signal butterfly doors, the system pipes filled with water to a wet system, Hunan fm authentication signal butterfly doors, experienced only a short delay before the fire sprinkler operation, the system is filled water into the wet system. ACC-1 dry-type valve quick opening device, the external reset ACC-1 dry-type valve quick opening device (hereinafter referred to as accelerator) is the DPV-1 Dry Type Valve (2-1 / 2 "3" 4 "6" ) supporting devices. ACC-1 Accelerator dry-type valve can be shortened from the nozzle (or only one) action to dry valve operation time. Hunan fm authentication signal butterfly doors | Year Anyuan Electromechanical | fm authentication signal butterfly doors by the Hubei Chong 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.